What is Beryllium Copper Alloy

Beryllium copper alloy is composited by the beryllium and copper, the main material is beryllium. It is the best performance copper alloys advanced flexible material, has high strength, elasticity, hardness, fatigue strength, elastic hysteresis, corrosion, wear, cold, highly conductive, non-magnetic, shock does not produce sparks a series of excellent physical, chemical and mechanical properties.

Beryllium Copper Alloy Picture

Beryllium copper alloy is a supersaturated solid solution copper alloys, non-ferrous alloy mechanical properties, physical properties, chemical properties and good corrosion resistance combined, after solution and aging treatment, with special steel with very high ultimate strength, elasticity limit, yield strength and fatigue limit, but also have a high electrical conductivity, thermal conductivity, high hardness and wear resistance, high creep resistance and corrosion resistance, widely used in manufacturing various types of mold inserts, replace steel production high precision, complex shape of the mold, welding electrode materials, die-casting machines, injection molding machine punch, wear and corrosion work. Beryllium copper alloy used in micro-motor brush, cell phones, batteries, products, is indispensable to the national economy an important industrial material.

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What is Tungsten Copper Bar

Tungsten copper bar is a kind of tungsten copper rod, the special properties of tungsten copper bar is it's squre, and it is include.

Tungsten copper bar is combined by tungsten and copper, which includes the properties of tungsten and copper, are widely used on EDM and heat sink. The smallest thickness we are able to provide is 0.1mm, and we are also able to provide the special requried for each client.

All tungsten copper bars we provided are seriously obeyed international GB/T8320 producing. Our tungsten copper bars are high density and high conductivity and high hardness. Also, it is the first choice material of mirror spark discharge electrode.

Tungsten Copper Bar Picture

The manufacturing process is as follows: press the refractory metal, sinter the pressed compact at a high temperature, and infiltrate it with copper. All this is done under very closely controlled conditions. The result is a relatively hard material with superior arc and wear resistance, high physical Properties: at elevated temperatures, and good electrical and thermal conductivity.

The composition of tungsten copper bar we are able to provide is from 10Cu to 50Cu, or if you have any special requried of the composition, you can contact us without delay. Our technical department could research per client's per special requried.

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What Is Tungsten Copepr Rod

Tungsten copper rod is a kind of round rod. Tungsten copper rod is a combination of tungsten and copper.

Tungsten Copper Rod Picture

The manufacturing process is as follows: press the refractory metal, sinter the pressed compact at a high temperature, and infiltrate it with copper. All this is done under very closely controlled conditions. The result is a relatively hard material with superior arc and wear resistance, high physical Properties: at elevated temperatures, and good electrical and thermal conductivity.

We can provide tungsten copper rod with the diameter≥0.9mm and length≤300mm, and then the tungsten content of 55%~90%. But all can be produced as the requirements of customers, and you canuse our tungsten copper rods machining to your tagart dimension.

Tungsten copper rods are mainly used in resistance welding electrodes, EDM electrodes, high-voltage discharge electrodes and electronic packaging materials.

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Tungsten Copper Sheet

Tungsten copper sheet is a kind of tungsten copper plate, the special properties of tungsten copper sheet is it's thickness, which is only 0.1mm~1mm.

Tungsten Copper Sheet Picture

Tungsten copper sheet is combined by tungsten and copper, which includes the properties of tungsten and copper, are widely used on EDM and heat sink. The smallest thickness we are able to provide is 0.1mm, and we are also able to provide the special requried for each client.

All tungsten copper sheets we provided are seriously obeyed international GB/T8320 producing. Our tungsten copper sheets are high density and high conductivity and high hardness. Also, it is the first choice material of mirror spark discharge electrode.

The composition of tungsten copper sheet we are able to provide is from 10Cu to 50Cu, or if you have any special requried of the composition, you can contact us without delay. Our technical department could research per client's per special requried.

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Tungsten Copper Liner

Tungsten copper liner is made of copper tungsten and face-centered cubic structure of body-centered cubic structure consisting of neither miscible, nor a two-phase mixed structure of intermetallic compounds, often referred to as a pseudo-alloy. Therefore, it has both high strength and hardness, low coefficient of expansion characteristics of tungsten; while there are high plasticity of copper, good electrical and thermal conductivity, this unique combination of properties make tungsten copper alloy is widely used especially due sigh tungsten copper alloy tungsten composite having a high density and high toughness of copper and attention. 

Tungsten Copper Liner Picture

Tungsten copper liner is very sensitive to bomb high charge, the rapid decline in large frying depth to compete with armor, the best fried high as 3 times the diameter size. This is also the presence of tungsten copper liner in common: in a small frying condition of high depth of their armor comparable copper liners increased by about 30%, but to compete in the big frying performance is deteriorating rapidly, the jet can not get ductility. Furthermore, since the metal powder alloy and illiquid, with filling, pressing process many random factors, so that the amount of Liner quality (ie density) distribution is difficult to control, so the performance is unstable, wearing dark volatile A pair of which is to be desired.

Tungsten copper shaped combination of high density and ductility of tungsten copper, compared to copper liners have higher power and armor shaped effect. The disadvantage is that tungsten and copper can not dissolve each other, and because of the density difference between the two large, easy to form when gravity segregation caused by compression molding liners inhomogeneous density distribution.

Tungsten copper alloy as an ideal material for liners, but there is more in the preparation process issue, tungsten copper alloy bonding strength is poor, molding material difficulties; its wear deep fried sensitive to high variability, it should only lower Fried use under high conditions.

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Copper Tungsten Heatsink

We are able to produce in quantities of one million copper tungsten heatsink per year, it is critical that these devices operate reliably when exposed to the extreme stresses found in military applications. We source high quality 90/10 CuW from a trusted vendor, and machine the 5 mm x 6 mm x .75 mm parts with precision CNC equipment. The required Nickel and gold plating is applied with our unique and innovative chemical processes that produce an impenetrable, RF hardened, and long lasting finish. These advanced processes have earned us a worldwide reputation as a leader in the field of CuW plating.

Copper tungsten heatsink poses various machining challenges, however we have worked closely with defense industry engineers to develop processes that produce finish qualities that meet their performance objectives.

Copper Tungsten Heatsink Picture

Chinatungsten specialize in providing our customers with precision machined components in a wide range of materials. The project highlighted here is composed of copper tungsten heatsink, and designed for an aerospace application. This composite metal exhibits excellent thermal conductivity, making it an ideal choice for close-tolerance parts that are exposed to high temperatures and other extreme conditions.

With the thermal advantages of copper with the very low expansion characteristics of tungsten, copper tungsten heatsink has properties similar to those of silicone carbide, aluminum oxide, and beryllium oxide. The thermal conductivity and low expansion also make copper tungsten heatsink an excellent choice even for extremely dense circuits.

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Tungsten Copper Iron Composite Electrode

Tungsten copper iron composite electrode also

Tungsten Copper Iron Composite Electrode Picture

called tungsten copper petiole electrode. One end of the material is tungsten copper alloy, the other end is a relatively high tensile strength steel. Tungsten copper with iron composite is developed in response to customer requirements, a new process technology, using a complex method of manufacturing the pressure. Combined with the end face of tungsten, copper and iron close no holes, the overall low contact resistance, and high tensile strength. Tungsten copper composite electrode material is copper, steel two materials by explosive welding composite, combined with high strength, good electrical conductivity, direct sawing, milling and grinding. In the discharge machining precision parts IC, which is a good overall performance copper electrode can not be replaced, to improve the processing accuracy of parts and reduce overall costs is the most important feature of this material. This material has been widely used in foreign countries, our company can be customized with different ways of complex products according to customer requirements.

Superimposition

1, The thickness of the tungsten, copper and iron superposition

2, The width of the superposition of tungsten, copper and iron

3, Cylindrical tungsten, copper and iron superposition

4, Tungsten, copper and iron inner circle superimposed

5, Different tungsten content gradient is superimposed

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Tungsten Copper Nut Electrode

Tungsten copper nut electrode welds bolt and nut together and achieves higher embossing hardness and higher welding strength, which has been widely used in machinery automation and aerospace fields.

Tungsten Copper Nut Electrode Picture

Tungsten Copper Nut Electrode Advantages

1. Tungsten copper has high hardness, high strength and excellent performance in electrical and thermal conductivity;

2. Using one-step forming process, no holes in welding seam and has high precision and concentricity;

3. High torsional strength can effectively ensure the quality and precision of processing;

4. Flexible enough for a range of products, can meet the mass-production and has longer service life.

Tungsten Copper Nut Electrode Application

Combined with tungsten copper and chromium zirconium copper seamlessly. On the one hand, the tip uses tungsten copper with highhardness, wear resistance and excellent electrical and thermal conductivity; on the other hand, electrode base is made of chromium zirconium copper with high temperature strength, good oxidation resistance. With the automatic bump welding equipment, it has a broad application prospect in automotive and aerospace fields.

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Tungsten Copper Spring Contacts

Tungsten copper spring contacts is suitable for using the circuit up to the rated voltage 660V AC 50HZ or 60HZ, rated current up to 95A, for making, breaking, frequently starting and controlling the AC motor. Combined with the auxiliary contact block, timer delay and machine interlocking device etc. it becomes the delay contacts, mechanical interlocking contacts, star-delta starter. It is combined into the electromagnetic starter.

Tungsten Copper Spring Contacts Picture

On account of their excellent properties, tungsten copper spring contacts materials have found a wide field of applications. Tungsten copper spring contacts are used successfully with high tungsten content as burn-off contacts for large low-voltage circuit breakers and with lower contents as contacts carrying a steady line current for molded case circuit breakers and in various protective circuit breakers. These tungsten copper spring contacts are also used in high current contractors where resistance to contact welding and arc erosion are required. 

The copper and tungsten composite group combines the high thermal and electrical conductivity of copper with the high erosion resistance of the high melting tungsten. These materials are also characterized by their high strength and their resistance to welding or sticking. They are principally made by infiltration and the nominal copper content varies from 10-50%. By increasing the amount of tungsten, the hardness and welding is reduced. This composite group of alloys is specially preferred for use in air.

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Tungsten Copper Rod

Tungsten copper rod is a kind of round rod. The grade of tungsten copper rod include WD10070、WD10075 and WD10080. the choice of tungsten copper content are depend of the application of tungsten copper rod, but if you do not know the detail application of the material, you can choice the content according to GB/T8320-2003.

Tungsten Copper Rod Picture

Tungsten copper rod is a kind of composite material, which is manufactured by high-purity tungsten powder and high conductivity copper powder with the production process of isostatic pressing, sintering temperature and copper infiltrated.

Tungsten copper rod properties include breaking arc performance, good thermal conductivity, low thermal expansion, in high temperature will not soften, high strength, high density and high hardness.

Tungsten copper rod is mainly used in resistance welding electrodes, EDM electrodes, high-voltage discharge electrodes and electronic packaging materials.

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Tungsten Copper Alloy Brick

Tungsten copper alloy brick, is also called tungsten copper plate (tungsten-copper, Cu-W, or W-Cu) is a pseudo alloy of copper and tungsten. As copper and tungsten are not mutually soluble, the tungsten copper alloy brick material is composed of distinct particles of one metal dispersed in a matrix of the other one. The microstructure of tungsten copper brick is therefore rather a metal matrix composite than a true alloy.

Tungsten Copper Alloy Brick Picture

Tungsten copper alloy brick combines the properties of both metals, resulting in a material that is heat-resistant, ablation-resistant, highly thermally and electrically conductive, and easy to machine.Tungsten copper brick offered by us is high quality.

Parts are made from the Cu-W alloy by pressing the tungsten particles into a desired shape, sintering the compacted part, and then infiltrating with molten copper. Sheets, rods and bars of the alloy are available as well.

Chinatungsten Online provides tungsten copper alloy brick composites to be used extensively in thermal mounting plates, chip carriers, flanges, and frames for high-powered electronic devices. With the thermal advantages of tungsten copper brick with the very low expansion characteristics of tungsten, tungsten copper brick has properties similar to those of silicone carbide, aluminum oxide, and beryllium oxide. The thermal conductivity and low expansion also make tungsten copper brick an excellent choice even for extremely dense circuits. Tungsten copper alloy brick can be widely used in many fields, we can provide different sizes of tungsten copper brick according to your requirements.

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Tungsten Copper Heat Base

Chinatungsten's tungsten copper heat base is to be used extensively in thermal mounting plates, chip carriers, flanges, and frames for high-powered electronic devices and also used in radio frequency, microwave, high power diode packaging and optical communication system.

With the thermal advantages of copper with the very low expansion characteristics of tungsten, tungsten copper has properties similar to those of silicone carbide, aluminum oxide, and beryllium oxide. The thermal conductivity and low expansion also make tungsten copper alloy an excellent choice even for extremely dense circuits.

Tungsten Copper Heat Base Picture

The CuW75 tungsten copper alloy is used extensively in thermal mounting plates, chip carriers, flanges, and frames for high-power electronic devices. As a tungsten copper material, it's a composite, so both the thermal advantages of copper and the very low expansion characteristics of tungsten can be utilized.

Copper tungsten is one of the most popular refractory metal based heat base materials offered today. At China Tungsten we can offer all kinds of tungsten copper heat base as the customer's requirements.

Tungsten copper heat base also called tungsten copper heat sink. Tungsten copper heat base is a heat base which is made of tungsten copper alloy. A heat base is a term for a component or assembly that transfers heat generated within a solid material to a fluid medium, such as air or a liquid. Examples of heat bases are the heat exchangers used in refrigeration and air conditioning systems and the radiator (also a heat exchanger) in a car. Heat bases also help to cool electronic and optoelectronic devices, such as higher-power lasers and light emitting diodes (LEDs).

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Tungsten Copper Electrode Application

Tungsten copper electrode is an electrical conductor used to make contact with a nonmetallic part of a circuit. And the composition of tungsten copper electrode is tungsten and copper.

Tungsten copper electrode owns the sprier properties of tungsten and copper, with which of high conductivity, good  thermal conductivity, thermal expansion of small, high-temperature non-softening, high-intensity, high-density and high hardness.
With these sprier properties, tungsten copper electrode are usual used in the following area:
1.Resistance welding
2.EDM field
3.High-voltage vacuum discharge tube
4.Electronic Packaging Materials

Tungsten Copper Electrode Picture

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Tungsten Copper Bar Application

Tungsten copper bar owns the properties of high electrical conductivity and low consumption, the bars are widely used to make grid side rod, electrode, welding and so on.

The following is the detail information for the tungsten copper bar application:

1. Resistance Welding Electrode

2. Electric Spark Electrode

3. High-voltage Discharge Tube Electrode

4. Electrical Seal Material

Tungsten Copper Bar Picture

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Tungsten Copper Contacts Spares

Chinatungsten are able to provide kinds of tungsten copper contacts, and the tungsten copper contacts spares is a kind of tungsten copper contacts. It is used as electrode.

Tungsten Copper Contact Spares Picture

Tungsten copper contacts spares have good resistance to arc erosion, mechanical wear, contact welding and good conductivity. They are usually selected for oil, gas, air or vacuum, devices. The contact surfaces will oxidize when switched in air. These press-sinter-infiltrate materials should only be considered for arcing surfaces in air when used as arcing tips, arc plates and arc runners. When switching with moderate contact arcing, the tungsten copper with a high copper content may give the lowest erosion. As arcing severity increases, the tungsten copper with the higher refractory content withstand arc erosion better. Tungsten copper contacts spares are also used as arcing edges of selector switchblades in transformer tap changers.

Tungsten copper contacts spares materials made of WCu are also characterized by the properties of high arc erosion resistance, good electrical conductivity, excellent strength, very good machinability, good thermal conductivity and low thermal expansion.

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Tungsten Copper Wear Resistance

Tungsten copper wear resistance material for a lining of a blast-furnace tuyere sleeve, which is prepared by the following raw materials in percentage by weight: 40-60% of nano copper powder, 36-56% of nano tungsten powder, 0.2-0.65% of iron powder and 4-6% of chromium powder. Metal conducts plastic deformation and is molten and diffused at high temperature and high pressure and by the aging effect at the high temperature and the high pressure, so that the high-temperature wear-resistant tungsten copper material is obtained. The high temperature wear resistance  material of tungsten copper is good in heat-conducting property, high-temperature strength and high-temperature wear-resistant property, can realize metallurgical bonding with a fine copper substrate, and can be used for manufacturing the lining of the blast-furnace tuyere sleeve, which is good in wear-resistant property and long in service life; the wear-resistant property of the blast-furnace tuyere sleeve can be improved greatly; and the service life of the blast-furnace tuyere sleeve can be prolonged greatly.

Tungsten Copper Parts Picture

The tungsten copper wear resistance nano-powder materials were milled, depending on the ratio of copper powder mixed 2_4h, first at the bottom of the prepared graphite mold Xianpu about O. 5_ thick layer of pure nano-tungsten-copper resistant materials and then mixed in different proportions holes and pure copper powder powder, copper content increased, the thickness of about I. 5mm, the surface layer of about O. 5mm holes and ー thick pure copper powder.

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Copper Tungsten Heatsink

Copper tungsten heatsink poses various machining challenges, however we have worked closely with defense industry engineers to develop processes that produce finish qualities that meet their performance objectives.

Copper Tungsten Heatsink Picture

We are able to produce in quantities of one million copper tungsten heatsink per year, it is critical that these devices operate reliably when exposed to the extreme stresses found in military applications. We source high quality 90/10 CuW from a trusted vendor, and machine the 5 mm x 6 mm x .75 mm parts with precision CNC equipment. The required Nickel and gold plating is applied with our unique and innovative chemical processes that produce an impenetrable, RF hardened, and long lasting finish. These advanced processes have earned us a worldwide reputation as a leader in the field of CuW plating.

With the thermal advantages of copper with the very low expansion characteristics of tungsten, copper tungsten heatsink has properties similar to those of silicone carbide, aluminum oxide, and beryllium oxide. The thermal conductivity and low expansion also make copper tungsten heatsink an excellent choice even for extremely dense circuits.

If you have any inquires concerning tungsten copper products, please do not hesitate to e-mail us by : sales@chinatungsten.com.

Tungsten Copper Laser Heat Sink

Tungsten Copper Laser Heat Sink Picture

Tungsten copper heat laser sink is an integrated circuit chip having a certain function is placed in a container with suitable housing, the chip to provide a stable working environment, protect the chip from less affected by the external environment, so that an integrated circuit having a stable normal function. At the same time the heat sink is chip-chip output, input connecting means outwardly transition, together with the chip to form a complete whole. The heat sink sheet material is required to have a certain degree of mechanical strength, good electrical properties, thermal properties and chemical stability, and according to different categories of integrated circuits and the use of premises, the choice of different package structures and materials.

Properties

Tungsten copper laser heat sink combines the advantages of tungsten and copper, both having low expansion characteristics of tungsten, but also has high thermal conductivity properties of copper, its thermal expansion coefficient and thermal conductivity can be varied by adjusting the tungsten copper component, while and coefficient of thermal expansion of silicon, gallium arsenide, and the ceramic material matches.

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Tungsten Copper Spot Welding Electrode

Tungsten copper spot welding electrode plays an important role in ensuring the quality of spot welding, which includes conductivity, transfer the pressure and rapidly scatter the heat in the welding area.

Advantages

1. High machining accuracy, the small area of the welding sharp;

2. Low voltage required, high-performance welding and good welding stability;

3. High torsional strength can effectively ensure the quality and precision of processing;

4. Small welding seam, good consistency and not easily to be pseudo soldered.

Tungsten Copper Spot Welding Electrode Picture

Process

1. Special conditions for improving the contacted resistance and heat dissipation, capacitor discharge welder using large current and short energizing time can be relatively large weld the workpiece large in thickness;

2. Use electrode with different diameter and the small one used in the thin plate or the one with good performance in electrical and thermal conductivity in order to increase the current density and reduce the effect of electrode heat dissipation this side;

3. Use different electrode materials or conductive sheets, one side of the workpiece with good thermal conductivity is poor heat conductivity of copper alloy, to reduce heat loss that side;

4. Use gasket (poor performance in thermal conductivity, thickness is between 0.2-0.3mm) to reduce the heat on this side.

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Tungsten Copper Welding Electrode

Tungsten copper welding electrode general specification is D1x50, D2x50, D3x50 and D4x50. Composition of electrode is 70W30Cu, the density is 13.85, hardness is 85, conductivity is 42, this material is more suitable for welding electrode than other material. Especially suitable for capacitor discharge precision molds repair welding, resistance welding and TIG integrated solutions cold welding.

Tungsten Copper Welding Electrode Picture

Tungsten copper welding electrode is mainly used in cold punching, bending, extrusion, die-casting mold, high-speed steel cutting tools, fixtures, vulnerable parts of mechanical parts processing repair, measuring tools, mechanical parts wear were trace repair. Casting trachoma, stomata repair. Complex cavity, narrow grooves, blind holes, corners and repair of carbide tooling, mold industry wide in scope, casting parts used in automobile, industrial machinery and machine tool industry, aviation and shipbuilding, petroleum chemical, coal, construction machinery and many other industries for product repair.

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Tungsten Copper Rod for EDM

Tungsten copper rod for EDM has excellent thermal and electrical conductivity, arc erosion resistance and high material removal rate. Especially for tungsten carbide, high-temperature hard alloy mold manufacturing has remarkable performance.

Characteristic

Tungsten copper rod used for electrode accounts for a quarter of total consumption of tungsten copper, so it not only required high conductivity, material removal rate, low electrode consumption, easy for processing, but also has requirements as follow:

Tungsten Copper Rod Picture

1. Based on high thermal and electrical conductivity, it also obtains better performance in arc erosion resistance;

2. It is difficult to meet the requirements of the contact by normal process, tungsten copper electrode should has uniformity and high density;

3. It is the most out standing problem that the mold or other products with diverse shape or structure needs different kinds of tungsten copper electrode, but the quantity demanded is relatively low.

EDM Principle

Electric discharge machining (EDM) is a non-traditional type of precision processing using an electrical spark-erosion process between the electrode and the working piece of electrically conductive immersed in a dielectric fluid. Since it has more special gains, the EDM has been widely applied in modern metal industry for producing complex cavities in moulds and dies, which are difficult to manufacture by conventional machining.

The use of EDM in the production of forming tools to produce plastics moldings, die castings, forging dies etc., has been firmly established in recent years. The EDM is a well-established machining choice for manufacturing geometrically complex or hard material parts that are extremely difficult to machine by conventional machining process. Its unique feature of using thermal energy to machine electrically conductive parts regardless of hardness has been its distinctive advantage for manufacturing of mold, die, automotive, aerospace and surgical components. Thus, titanium and titanium alloy, which is difficult-to-cut material, can be machined effectively by EDM.

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Tungsten Copper Military

Tungsten copper alloy is easily to be machined. And with this series of high conductivity, high thermal conductivity and heat resistance fine characteristic, tungsten copper military has been widely used in mechanical, electrical, instruments and other civil industrial, and also is widely in making important as well as complex components for aviation, spaceflight, weapons in the military industry.

The theory of tungsten copper military materials applied as high temperature material in military use is that when the air temperature is close to event exceed the temperature melting point of tungsten (over3,000 ℃), the content of copper in tungsten copper materials evaporate and then absorb a great deal of heat , which greatly reduce temperature of tungsten copper military made parts.

Tungsten Copper Military Attention

Tungsten Copper Block Picture

Few materials could continue working in such high temperature. Therefore, one of the important effects of tungsten copper military material is as high-speed and high temperature airflow ablation and flushing parts in rockets and missiles, such as gas helm, nozzle, throat lining, the nose cones, etc. In addition it still can be used as a medical cover of tank, the tailpipe and orbit materials of electromagnetic gun. With these applications, tungsten copper alloy military materials should be handled strictly as the following two items. In order to guarantee the properties of high temperature strength, good resistance to ablation, and erosion resistant of tungsten copper military material in high temperature ,it must be sure the high density of framework and skeleton intensity of tungsten, therefore, tungsten copper alloy military materials in this application generally contain 5% to 10% copper . And for the sake of making the tungsten copper alloy military materials gasification and smoothly reduce the material surface temperature by absorbing large mass of heat, it must be ensure that tungsten skeleton pore have very good connectivity and good capillary function at low copper content.

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Copper Tungsten Breif Introduction

Copper tungsten (tungsten copper, CuW, or WCu) is a mixture of copper and tungsten. As copper and tungsten are not mutually soluble, the material is composed of distinct particles of one metal dispersed in a matrix of the other one. The microstructure is therefore rather a metal matrix composite instead of a true alloy.

The material combines the properties of both metals, resulting in a material that is heat-resistant, ablation-resistant, highly thermally and electrically conductive, and easy to machine.

Copper Tungsten Plate Picture

Parts are made from the CuW composite by pressing the tungsten particles into the desired shape, sintering the compacted part, then infiltrating with molten copper. Sheets, rods, and bars of the composite mixture are available as well.

Commonly used copper tungsten mixtures contains 10–50 wt.% of copper, the remaining portion being mostly tungsten. The typical properties is dependent on its composition. The mixture with less wt.% of copper has higher density, higher hardness, and higher resistivity. The typical density of CuW90, with 10% of copper, is 16.75 g/cm3 and 11.85 g/cm3 for CuW50 . CuW90 has higher hardness and resistivity of 260 HB kgf/mm2 and 6.5 μΩ.cm than CuW50.

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Tungsten Copper Applications

Tungsten copper are used where the combination of high heat resistance, high electrical and thermal conductivity, and low thermal expansion are needed. Some of the applications are in electric resistance welding, as electrical contacts, and as heat sinks. As contact material, the composite is resistant to erosion by electric arc. Tungsten copper alloys are also used in electrodes for electrical discharge machining and electrochemical machining.

The CuW75 composite, with 75% tungsten, is widely used in chip carriers, substrates, flanges, and frames for power semiconductor devices. The high thermal conductivity of copper together with the low thermal expansion of tungsten allows thermal expansion matching to silicon, gallium arsenide, and some ceramics. Other materials for this applications are CuMo alloy, AlSiC, and Dymalloy.

Tungsten copper composites with 70–90% of tungsten are used in liners of some specialty shaped charges. The penetration is enhanced by factor 1.3 against copper for homogeneous steel target, as both the density and the break-up time are increased. Tungsten powder based shaped charge liners are especially suitable for oil well completion. Other ductile metals can be used as a binder in place of copper as well. Graphite can be added as lubricant to the powder.

Tungsten Copper Parts Picture

Tungsten copper can also be used as a contact material in a vacuum. When the contact is very fine grained (VFG) the electrical conductivity is much higher than a normal piece of copper tungsten. Copper tungsten is a good choice for a vacuum contact due to its low cost, resistance to arc erosion, good conductivity, and resistance to mechanical wear and contact welding. Tungsten copper is usually a contact for vacuum, oil, and gas systems. It is not a good contact for air since the surface will oxidize when exposed. Tungsten copper is less likely to erode in air when the concentration of copper is higher in the material. The uses of tungsten copper in the air are as an arc tip, arc plate, and an arc runner.

Copper tungsten materials are often used for arcing contacts in SF6 circuit breakers that require medium and high voltages. The copper tungsten used in these circuit breakers is subject to temperatures above 20,000K, which is reached during arcing. Copper tungsten arc contacts resist arc erosion.

The spark erosion (EDM) process calls for copper tungsten. Usually, this process is used with graphite, but tungsten has a high melting point (3420 0C). This allows the CuW electrodes to have a longer service life than the graphite electrodes. This is crucial when the electrodes have been processed with complex machining. Since the electrodes are susceptible to wear the electrodes provide more geometrical accuracy than the other electrodes. These properties also let the rods and tubes manufactured for spark erosion be made smaller in diameter and have a longer length since the material is less likely to chip and warp.

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What Is Tungsten Copper Contact

Tungsten copper contact is subjected to extreme mechanical and thermal stresses during operation. For fractions of a second, temperatures rise to several thousand degrees as a result of the arcing. Our tungsten copper alloy electrode materials are used because of tungsten copper alloy electrode unique physical properties. Tungsten copper alloy electrode material offered by us is high quality. We can provide all kinds of tungsten copper electrode as your requirements. Tungsten copper electrode is easy to be machined.

Advantages

Tungsten Copper Contact Picture

Pure tungsten and copper, tungsten copper electrode uniform material, low content of gas and impurity, very high burn-off resistance, excellent thermal and electrical conductivity, all necessary joining and machining processes. 

1, High arc resistance combined with good electrical conductivity 

2, High thermal conductivity

3, low thermal expansion

4, Special tungsten copper alloy products are available at customers' requests 

Applications

1, Arcing contacts and vacuum contacts in high and medium voltage breakers or vacuum interrupters

2, Electrodes in electric spark erosion cutting machines

3, Heat sinks as passive cooling elements of electronic devices

Properties

1, Material: 50-90% Tungsten / 50-10% Copper

2, Density: 11.80~ 16.80 g/cm3

3, Conductivity (IACS %): 54~27

4, Resistivity: 3.0~6.5 µΩcm

5, Techniques: Copper unfiltered Tungsten block in vacuum high-temperature stove.

If you have any inquiry concerning tungsten copper products, please do not hesitate to e-mail us by : sales@chinatungsten.com

What Is Tungsten Copper Heat Sink

Tungsten copper heat sink is a composite of tungsten and copper. The coefficient of thermal expansion (CTE) of the composite can be designed by controlling the content of tungsten, matching that of the materials, such as Ceramics (Al2O3, BeO), Semiconductors (Si), Metals (Kovar), etc. The products are widely application in the fields such as radio frequency, microwave, high power diode packaging and optical communication system.

Advantages

High thermal conductivity, Excellent hermetic, Excellent size control, surface finish and flatness, Semi-finished or finished (Ni/Au plated) products available properties of WCu and MoCu heat materials.

Tungsten Copper Heat Sink Picture

Tungsten copper heat sink owns not only the low expansion of tungsten and high heat conductivity of copper. Its expansion index and heat conductivity can also be changed through changing the content of the materials, which provides convenience to the using of the material. We can supply various specifications and the Copper tungsten sheet with different tungsten proportions.

Tungsten copper high performance composites are fabricated from carefully controlled porous tungsten that is vacuum infiltrated with molten copper. This results in a WCu composite that has high conductivity and a matched low thermal expansion for heat sinks. The products are widely application in the fields such as radio frequency, microwave, high power diode packaging and optical communication system.

If you have any inquiry concerning tungsten copper products, please do not hesitate to e-mail us by : sales@chinatungsten.com

Tungsten Copper Spring Contact

Tungsten copper spring contact with excellent resistance arc burning and welding resistance, breaking arc performance, good thermal conductivity, thermal expansion, high temperature does not soften, high strength, high density, high hardness and other characteristics. It has good electrical and thermal conductivity, good high temperature strength and certain plasticity. At a temperature above 3000 ℃, copper alloy is liquefied evaporated absorbs heat, reduces surface temperature, so these materials are also referred to as metal materials sweating.

Tungsten Copper Spring Contact Picture

Tungsten copper spring contact is made by powder metallurgy method high pressure contacts of different shapes. Is the use of high-purity tungsten copper contact of tungsten metal powder excellent characteristics and plasticity, high conductivity copper powder of high purity, etc., by isocratic pressing, high temperature sintering, melting refined copper infiltration process of composite materials.

Tungsten copper spring contact is widely used as high pressure, ultra-hydraulic switch contacts and circuit breakers, protection ring for electric upsetting anvil block material, conductive Tsui automatic submerged arc welding, plasma cutting machine nozzles, welding, welding of welding head, seam welding wheels, electrodes and spark electrode sealing gas Mao point, spot welding, butt welding materials.

Any feedback or inquiry of tungsten copper alloy products please feel free to contact us: sales@chinatungsten.com.

Tungsten Copper Contact Spare

Tungsten copper contact spare is an alloy composite of tungsten and copper which has the combination s of the excellent properties of tungsten and copper, such as heat resistance, aberration resistance, high density, excellent thermal and electrical conductivity.

Tungsten copper contact spare is subjected to extreme mechanical and thermal stresses during operation. For fractions of a second, temperatures rise to several thousand degrees as a result of the arcing. Only tungsten copper materials will stand these high temperature & aberration.

Application

Tungsten copper contact spare is the best suitable material for electrical discharge machining (EDM) applications. It has excellent wear resistance, good metal removal rate and ability to retain good detail. It is used where speed and wear resistance are most important.

Tungsten Copper Contact Spare Picture

Tungsten copper contact spare has good resistance to arc erosion, mechanical wear, contact welding and good conductivity. They are usually selected for oil, gas, air or vacuum, devices. The contact surfaces will oxidize when switched in air. These press-sinter-infiltrate materials should only be considered for arcing surfaces in air when used as arcing tips, arc plates and arc runners. When switching with moderate contact arcing, the tungsten copper with a high copper content may give the lowest erosion. As arcing severity increases, the tungsten copper with the higher refractory content withstand arc erosion better. Tungsten copper contact spare is also used as arcing edges of selector switchblades in transformer tap changers.

Any feedback or inquiry of tungsten copper alloy products please feel free to contact us: sales@chinatungsten.com.

Copper Tungsten Heatsink

We are able to produce in quantities of one million copper tungsten heatsink per year, it is critical that these devices operate reliably when exposed to the extreme stresses found in military applications. We source high quality 90/10 CuW from a trusted vendor, and machine the 5 mm x 6 mm x .75 mm parts with precision CNC equipment. The required Nickel and gold plating is applied with our unique and innovative chemical processes that produce an impenetrable, RF hardened, and long lasting finish. These advanced processes have earned us a worldwide reputation as a leader in the field of CuW plating.

Copper tungsten heatsink poses various machining challenges, however we have worked closely with defense industry engineers to develop processes that produce finish qualities that meet their performance objectives.

copper tungsten heatsink picture

Chinatungsten specialize in providing our customers with precision machined components in a wide range of materials. The project highlighted here is composed of copper tungsten heatsink, and designed for an aerospace application. This composite metal exhibits excellent thermal conductivity, making it an ideal choice for close-tolerance parts that are exposed to high temperatures and other extreme conditions.

With the thermal advantages of copper with the very low expansion characteristics of tungsten, copper tungsten heatsink has properties similar to those of silicone carbide, aluminum oxide, and beryllium oxide. The thermal conductivity and low expansion also make copper tungsten heatsink an excellent choice even for extremely dense circuits.

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Tungsten Copper Liner

Tungsten copper alloy is made of copper tungsten and face-centered cubic structure of body-centered cubic structure consisting of neither miscible, nor a two-phase mixed structure of intermetallic compounds, often referred to as a pseudo-alloy. Therefore, it has both high strength and hardness, low coefficient of expansion characteristics of tungsten; while there are high plasticity of copper, good electrical and thermal conductivity, this unique combination of properties make tungsten copper alloy is widely used especially due sigh tungsten copper alloy tungsten composite having a high density and high toughness of copper and attention. 

tungsten copper liner picture

Tungsten copper liner is very sensitive to bomb high charge, the rapid decline in large frying depth to compete with armor, the best fried high as 3 times the diameter size. This is also the presence of tungsten copper liner in common: in a small frying condition of high depth of their armor comparable copper liners increased by about 30%, but to compete in the big frying performance is deteriorating rapidly, the jet can not get ductility. Furthermore, since the metal powder alloy and illiquid, with filling, pressing process many random factors, so that the amount of Liner quality (ie density) distribution is difficult to control, so the performance is unstable, wearing dark volatile A pair of which is to be desired.

Tungsten copper shaped combination of high density and ductility of tungsten copper, compared to copper liners have higher power and armor shaped effect. The disadvantage is that tungsten and copper can not dissolve each other, and because of the density difference between the two large, easy to form when gravity segregation caused by compression molding liners inhomogeneous density distribution.

Tungsten copper alloy as an ideal material for liners, but there is more in the preparation process issue, tungsten copper alloy bonding strength is poor, molding material difficulties; its wear deep fried sensitive to high variability, it should only lower Fried use under high conditions.

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Tungsten Copper Iron Composite Electrode

Tungsten copper iron composite electrode also called tungsten copper petiole

Tungsten Copper Iron Composite Electrode Picture

electrode. One end of the material is tungsten copper alloy, the other end is a relatively high tensile strength steel. Tungsten copper with iron composite is developed in response to customer requirements, a new process technology, using a complex method of manufacturing the pressure. Combined with the end face of tungsten, copper and iron close no holes, the overall low contact resistance, and high tensile strength. Tungsten copper composite electrode material is copper, steel two materials by explosive welding composite, combined with high strength, good electrical conductivity, direct sawing, milling and grinding. In the discharge machining precision parts IC, which is a good overall performance copper electrode can not be replaced, to improve the processing accuracy of parts and reduce overall costs is the most important feature of this material. This material has been widely used in foreign countries, our company can be customized with different ways of complex products according to customer requirements.

Superimposition

1, The thickness of the tungsten, copper and iron superposition

2, The width of the superposition of tungsten, copper and iron

3, Cylindrical tungsten, copper and iron superposition

4, Tungsten, copper and iron inner circle superimposed

5, Different tungsten content gradient is superimposed

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Tungsten Copper Nut Electrode

Tungsten copper nut electrode welds bolt and nut together and achieves higher embossing hardness and higher welding strength, which has been widely used in machinery automation and aerospace fields.

Tungsten Copper Nut Electrode

Tungsten Copper Nut Electrode Advantages

1. Tungsten copper has high hardness, high strength and excellent performance in electrical and thermal conductivity;

2. Using one-step forming process, no holes in welding seam and has high precision and concentrically;

3. High torsional strength can effectively ensure the quality and precision of processing;

4. Flexible enough for a range of products, can meet the mass-production and has longer service life.

Tungsten Copper Nut Electrode Application

Combined with tungsten copper and chromium zirconium copper seamlessly. On the one hand, the tip uses tungsten copper with high hardness, wear resistance and excellent electrical and thermal conductivity; on the other hand, electrode base is made of chromium zirconium copper with high temperature strength, good oxidation resistance. With the automatic bump welding equipment, it has a broad application prospect in automotive and aerospace fields.

Any feedback or inquiry of tungsten copper alloy products please feel free to contact us via sales@chinatungsten.com.

What is Tungsten Copper Plate

Tungsten copper plate is a composite of tungsten and copper. The coefficient of thermal expansion of the composite can be designed by controlling the content of tungsten, matching that of the materials, such as Ceramics, Semiconductors, Metals, etc. The products are widely application in the fields such as radio frequency, microwave, high power diode packaging and optical communication system.

Tungsten Copper Plate Picture

Tungsten Copper Plate Features
1. The composition of tungsten and copper are well-proportioned and accurate percentage;
2. Tungsten copper plates are precisely machined with high thermo stability, high arc resistance and high strength;
3. Tungsten copper plate has high electrical conductivity and thermal conductivity;
4. It owns both excellent properties of tungsten's low expansion and copper's high heat conductivity;
5. Tungsten copper plates comply with China GH 8320-87 and SJ-20848-2002UQB standard.

The longest length we are able to provide of tungsten copper plate is 500mm, and the most thickness is 0.2mm. And we also provide the special sizes according to per client's per special requried.

Any feendback or inquiry of tungsten copper alloy products please feel free to contact us emails to sales@chinatungsten.com