Tungsten Copper Properties

Tungsten copper parts provided by us are all with these properties.

Type	Density (g/cm3)	Conductivity	HB (MPa)	Size (mm)
WCu50	11.9~12.3	≥55 %IACS	1130~1180	Rod: Ø1~50 Length<300 Sheet: Width<190 Length<300 Special type: Width<190 Length<300
WCu40	12.8~13.0	≥47 %IACS	≥1375
WCu30	13.8~14.4	≥42 %IACS	≥1720
WCu20	15.2~15.6	≥34 %IACS	≥2160
WCu10	16.8~17.2	≥27 %IACS	≥2550
WCu7	17.3~17.8	≥26 %IACS	≥2900

The electrical and thermal properties of the alloy vary with different proportions. Copper increases the thermal conductivity, which plays a huge part when being used in circuit breakers. Electrical resistivity with an increase in the percentage of tungsten present in the alloy, ranging from 3.16 at 55% tungsten to 6.1 when the alloy contains 90% tungsten. An increase in tungsten leads to an increase in ultimate tensile strength up until the alloy reaches 80% tungsten and 20% copper with an ultimate tensile strength of 663 MPa. After this mixture of copper and tungsten, the ultimate tensile strength then begins to decrease fairly rapidly.

If you have got any inquiry of tungsten copper, please feel free to contact us:
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90W10Cu Tungsten Copper Properties

90W10Cu tungsten copper properties are:

At 950 ℃ high speed pressing attainable relative density greater than 80.65% of W skeleton, by infiltration get 90W10Cu composites.

At room temperature, 600 ℃, 950 ℃ for high-speed tungsten preform pressing, pressing as the temperature rises, the green density increases.

High velocity compaction, powder mass increases, due to the ability of additional density decreases, resulting green density decreases. With the increase in the number of high-speed pressing, green density is improved.

Using high-speed pressing technology combined with infiltration of 90W10Cu preparation material and the thermal expansion coefficient and other indicators have reached the requirements of the appropriate heat sink material.

                          

If you have any inquiry of tungsten copper, please feel free to contact us:

Email: sales@chinatungsten.com/sales@xiamentungsten.com

Tel.: +86 592 5129696/+86 592 5129595

Fax: +86 592 5129797

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90W10Cu Tungsten Copper Production Technology

90W10Cu tungsten copper alloy mainly used to suppress the high-speed production technology to prepare, and then in 1400 ℃ high temperature hydrogen furnace infiltrated get 90W-10Cu composite. Research repression affect the quality of the pyrometer compacts green density and microstructure of. The results of surface, with the suppression of the temperature rise, the compact density, high-speed suppression obtained at 950 ℃ relative density greater than 80.65% of W skeleton dense tungsten particles connection, distribution, pore connectivity is good. Compacts increases quality, due to the applied energy density is reduced, leading to the green density decreases. By twice the height of repression, the green density further increases; the relative density of 99.5% 90W10Cu materials, thermal conductivity 175W / (mK), tungsten copper alloy 90W10Cu indicators have reached the requirements of the appropriate heat sink material.

If you have any inquiry of tungsten copper, please feel free to contact us:

Email: sales@chinatungsten.com/sales@xiamentungsten.com

Tel.: +86 592 5129696/+86 592 5129595

Fax: +86 592 5129797

Scan QR code of Chinatungsten Wechat platform to follow up the daily latest price and market of tungsten, molybdenum and rare earth.

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.

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

Tungsten Copper Used in Vacuum Switch

Tungsten copper composite material has high hardness, high melting point, high strength and sweating property so that it can be widely used in high temperature, military fields, aeronautics and astronautics, vacuum switch, electronic packaging, EDM electrode and so on. Here we highlight tungsten-copper composite material in vacuum switch electrical aspects. Theoretically, vacuum switch is a kind of pressure in the vacuum system for the protection of the automatic controller, small size, excellent performance, stability, ease of maintenance and long service life. It can be widely used in various industrial automation environments, such as water utilities, petrochemicals, railways, military, pipelines, ships and so on.

When the vacuum pressure is greater than the set point, the controller will automatically cut off the circuit, signals, to ensure the normal operation of the system. When the pressure in the system is higher or lower than the safe pressure, pressure sensor immediate action within the controller, the controller makes contact on or off, the device stops working; When the pressure within the system to a safe pressure range of the device, the pressure sensor inside the controller reset immediately, the contacts within the controller turned on or off, the device is working properly. In order to adapt some high-voltage as well as vacuum switch electrical demand, related researchers developed special vacuum switch of tungsten copper. It can be perfectly adapt to flammable, explosive, high temperature and low temperature, moisture, corrosive environments, and gradually dominate the high-voltage (6-35V) grid and electrification equipment.

Tungsten copper composite materials require extremely low gas containing impurities (such as oxygen O2, N2 gas, etc.), it requires the use of a low gas content of raw materials and special process (high temperature sintering, vacuum infiltration, vacuum degassing, etc.) prepared. n these vacuum tungsten copper contact materials, in addition to conventional grades, the proportion of copper tungsten contact material has also developed a number of high-low tungsten copper tungsten copper, tungsten W is usually its content> 85%, such as W-10Cu, W-15Cu, etc., when asked tungsten copper material used in the case of low value when the closure, which can also add some other low melting point metal (such as antimony Sb, bismuth Bi, tellurium Te).

In contrast, there is a high copper content (60% -90%) of tungsten copper alloy, wherein W-70Cu Tungsten copper alloy products have been tested and Vickers hardness reaches1100MPa and 80% -85% IACS of high conductivity, and at 600 ℃ can still maintain a high hardness and conductivity, stable performance. Therefore, It also gradually replace some of the precious metal contacts (such as silver contacts, etc.), which significantly reducing the cost of the contact material. Overall, with the application of tungsten-copper composite materials more widely, for its new tungsten copper alloy materials research is also developing, such as tungsten copper with gradient structure, nano-crystalline tungsten copper, tungsten copper deformation processing, tungsten copper used in vacuum, tungsten copper with high or low content of tungsten, which replace the conventional materials in EDM, micro electronics, high temperature, military fields gradually. However, there are some problems of tungsten copper products in china, includes less high-end products, low utilization, the research and production are disjoint.

Tungsten Copper Used for Vacuum High-voltage Switch

Tungsten copper composite materials have widely used in electrical contacts, high voltage switches and breakers, especially in high voltage SF6, air / oil medium, large current circuit breaker. Recent years, with the rapid development of vacuum high-voltage switch, the contact materials have some innovation correspondly. Compared with other contacts, vacuum contact materials have higher requirements. Except the normal properties of switches, due to the surface of contact is particular clean, which will be easier welded in the air. So based on high resistance to weld, it also needs higher welding resistance, higher anti-electric erosion, low cut-off current and low content of gas. And tungsten copper excellent properties can perfectly meet the needs of high-voltage switch contacts.

From compression molding, for tungsten copper sheet contacts, CIP (Cold Isostatic Pressing) has good forming performance, but it has higher equipment investment and lower material utilization. The mechanical molding should be noted that the gap of molding tools and tungsten powder granularity. The smaller gap will cause the difficulties in stripping; the larger gap will make tungsten powder scratch the mold and produce the cracks on the surface of compact. From sintering process, porous tungsten skeleton sintered is the key process of tungsten copper manufacturing. High-temperature sintering is easy to remove impurities and ensure the electrical conductivity and the gas content meet the requirements. In addition, during the sintering process also need to consider the tungsten powder particle size, size distribution and pressing density. Too low temperature will increase the porosity and reduce the density and hardness of products; too high temperature will reduce the content of Cu and the electrical conductivity decrease. Overall, choose pure tungsten powder as raw material, mechanical molding, sintering furnace hydrogen reduction, hydrogen protection copper infiltration process to produce high-pressure vacuum switch tungsten copper material, it has high strength of porous W skeleton, low gas content, Cu has network-like distribution, tungsten copper matrix bonded tightly.

Tungsten Copper with Gradient Structure

Tungsten copper (W-Cu) and molybdenum copper (Mo-Cu) are composed of respectively tungsten and molybdenum with copper, which called two-phase composites and has many advantages when it used in some devices with high power, such as high hardness, high strength, high melting point, excellent chemical stability, excellent thermal and electrical conductivity and lower coefficient of thermal expansion. As a kind of electronic packaging heat sink material takes place of conventional materials gradually, the related researchers make an intensive study on tungsten copper, which includes add active agents, change powder properties to improve the sintering density of tungsten copper materials.

However, the conditions of some industries today have become more and more strict (including temperature, pressure, power, etc.), which requires tungsten copper has better properties. Inspired by tungsten carbide with gradient structure, the Japanese researcher propose new concept of functional materials with gradient structure and from the preparation process structure, computer simulation and forecasting has done sufficient research, have also made substantial progress, so that it plays an important role in some high-power devices. Tungsten copper composite material is kind of two-phase psudoalloy, which composed of two metals tungsten and copper with a great difference in physicochemical properties.

Its properties will change with the structure. Viewed from the aspect of gradient structure, it can has one end with a high hardness, high melting point, tungsten or copper content is low high-density tungsten copper, while the other end is a good electrical and thermal conductivity and high plasticity of copper or copper content of tungsten, copper, in this way the formation of gradient structure having a tungsten-copper composite materials have a good specificity and a broader application prospect.

For the manufacturing process of the gradient structure tungsten-copper composite materials, researchers and scholars in related fields, and also made a variety of attempts to conceive. Here is a brief introduction to several related new technologies, such as conventional dry lamination method, hierarchical load a different size of tungsten powder, cold pressed, sintered, after copper infiltration preparing different graded material consisting of tungsten-copper ( good sintered porous tungsten skeleton electrochemical corrosion formed along the direction of tungsten skeleton having a gradient porosity by infiltration of copper can be obtained having a continuous change in the composition of tungsten copper gradient material); the other one uses hot isostatic pressing diffusion bonding to form tungsten copper with gradient structure by different contents.

In addition, another type is prepared by continuous gradient layer, such as slip casting, sedimentation molding, centrifugal molding, etc. Plasma spraying is a kind of new method that are compacting and sintering tungsten copper powder with different content. There are two methods which have already patented process, one is the use of powder metallurgy - infiltration process. Preparation of powder metallurgy method which utilizes two components completely different copper tungsten compact, then where the thermal conductivity of tungsten copper larger compact embedded in another compact, due to the embedding of relatively high copper content briquette making its thermal conductivity is relatively high, and has a lower peripheral compact copper content, thus ensuring the overall coefficient of thermal expansion gradient material decreases. Another one is that combines tungsten copper (W-Cu) with ceramic based on aluminum nitride-aluminum (AlN-Al), ceramic has a gradient structure with a metal having a thermal expansion coefficient due to the match, so the lower internal stress, and as part of a combination of metal and ceramic high thermal conductivity such that heat will not affect the heat concentrated in the buffer layer and the heat radiating effect of the heat sink materials.

Tungsten copper contact

Tungsten copper contact is also called tungsten copper point. Tungsten copper contact is widely used in high voltage applications where there requires highly repetitive switch.

Tungsten has a high melting point, which gives tungsten excellent arc-corrosion resistance. Tungsten copper contact is a combination of copper and tungsten. Tungsten copper contact is a cost efficient relay contact and can resist arcing and corrosion. While tungsten copper contact should be regularly cleaned and burnished.Tungsten copper contact is suitable to be used in the circuit.

Tungsten copper contact can be made from tungsten copper rod or tungsten copper disk.

As for quality, we double-check materials before beginning production. We also conduct stringent inspections to ensure durability and specifications to meet your requirements.Buyers from US and India come to us for tungsten and molybdenum products and we have cooperated for over 10 years. Our selection and services satisfy clients worldwide.

If you have any interest in our tungsten copper alloy products, please do not hesitated to contact us by email:sales@chinatungsten.com or by telephone:86 592 5129696, we are at your service.

Tungsten Copper

After perfect proportion of tungsten and copper, its quality will be controlled very well. Tungsten copper alloy has features of high thermal stability and high strength. Tungsten copper has high electrical conductivity and thermal conductivity.Our tungsten copper alloy mainly is widely applied in industrial areas like aerospace, energy, power, metallurgy and machinery. Tungsten copper alloy also can be used in electronic device cooling equipment, air feeding device spacecraft parts.


Package Inspection
We will offer material certificate after finishing production which includes material’s name, chemical properties, mechanical properties, size and so on. Our products are packed by wooden boxes specialized for exportation. All of our products are separated by wet-proof paper.

If you have any interest in our tungsten copper alloy products, please do not hesitated to contact us by email:sales@chinatungsten.com or by telephone:86 592 5129696, we are at your service.

Tungsten Copper rod

We can change its chemical proportion to meet different requirements according to thermal expansion coefficient of tungsten copper alloy rod and thermal conductivity.


Our tungsten copper alloy rods can be supplied for the electric cooling device. It is common for tungsten copper rods to be used as electrodes. EDM electrodes have following features: super high temperature, low loss rate. Tungsten copper rods are stable during the process of discharge.





If you have any interest in our tungsten copper alloy products, please do not hesitated to contact us by email:sales@chinatungsten.com or by telephone:86 592 5129696, we are at your service.

Tungsten Copper Block

To be the manufacturer of Tungsten based products we are also focusing on the production of Tungsten Copper  Block with a diversified quality limit. Tungsten Copper is a metal holding highest amount of melting point and that is 3422 degree Celsius and the same is having lowest thermal expansion range. This is the reason tungsten blocks and plates are desirable in wide range.

Copper tungsten plates are another finest invention of copper and tungsten composition is getting its popularity in thermal based industries. They are holding high thermal and electrical conductivity with very limited amount of thermal expansion.

If you have any interest in our tungsten copper alloy products, please do not hesitated to contact us by email:sales@chinatungsten.com or by telephone:86 592 5129696, we are at your service.

Application of Tungsten Copper

Tungsten copper alloy is consisting of tungsten and copper, copper content of 10% to 50%. made of powder metallurgy alloy. It has good electrical and thermal conductivity, good high temperature strength and a certain plasticity. At high temperatures, such as above 3000 ℃. Tungsten copper alloy combines the advantages of tungsten and copper, which the high melting point of tungsten (tungsten melting point of 3410 ℃, coppermelting point 1080 ℃), Highdensity (density of tungsten 19.34g/cm, copper density 8.89/cm3); excellent thermal conductivity properties of copper, tungsten copper alloy (composition generally ranges WCu7 ~ WCu50) uniform micro structure,high temperature, high strength, resistance to arc erosion, density; conductivity,moderate thermal conductivity, high temperature materials are widely used in military, high-voltage switch with electrical alloy, EDM electrodes,microelectronics materials, parts and components are widely used as aerospace, aviation, electronic, electric power, metallurgy, machinery, sports equipment and other industries.

If you have any interest in our tungsten copper alloy products, please do not hesitated to contact us by email:sales@chinatungsten.com or by telephone:86 592 5129696, we are at your service.

Tungsten Copper Alloy

Tungsten copper (copper tungsten, CuW, or WCu) alloy is a pseudo-alloyof tungsten and copper. 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 than a true alloy.Copper Tungsten alloy 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 Alloy Main applications: For the spark erosion of dies of cemented carbide and for making high speed steel and switches and contacts in high and low voltage electrical devices.

If you have any interest in our tungsten copper alloy products, please do not hesitated to contact us by email:sales@chinatungsten.com or by telephone:86 592 5129696, we are at your service.

Tungsten Copper materials

Electrical contacts are 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.

Tungsten Copper material 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 Coppers are also used as arcing edges of selector switchblades in transformer tap changers.

If you have any interest in our tungsten copper alloy products, please do not hesitated to contact us by email:sales@chinatungsten.com or by telephone:86 592 5129696, we are at your service.

Application of Tungsten Copper

Our tungsten copper is widely used in many industrial areas such as aerospace, power, electronic, metallurgy, and machinery; It is also used for cooling device in electronic equipment;Tungsten copper is also adopted as electrodes in resistance welding machine;Arcing contacts and vacuum contacts in high and medium voltage breakers or vacuum interrupters adopt it as material;

It is adopted as passive cooling element in heat sink for electronic devices and electronic packaging materials;Copper tungsten can be used as the component of the pushing device in spacecrafts.


If you have any interest in our tungsten copper alloy products, please do not hesitated to contact us by email:sales@chinatungsten.com or by telephone:86 592 5129696, we are at your service.

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.

If you have any interest in our tungsten copper alloy products, please do not hesitated to contact us by email:sales@chinatungsten.com or by telephone:86 592 5129696, we are at your service.

Tungsten Copper

By selecting high purity tungsten powder and oxygen-free copper, all of our tungsten coppers are produced by sintering and infiltrating process. All the tungsten coppers from Cinatungsten are superior in quality.

Features:
1. The composition of tungsten and copper are well-proportioned and accurate percentaged;
2. Tungsten coppers are precisely machined with high thermo stability, high arc resistance and high strength;
3. Copper tungstgen has high electrical conductivity and thermal conductivity;
4. Tungsten copper from Chinatungsten complies with China GH 8320-87 standard.

If you have any interest in our tungsten copper alloy products, please do not hesitated to contact us by email:sales@chinatungsten.com or by telephone:86 592 5129696, we are at your service.

The Use of Tungsten Copper

[Note] the use of tungsten copper Make sure the product is not lacking, cracks or other abnormalities Kaifeng. Greater than the proportion of tungsten and copper steel products. Please be careful when using, prevent product falling injured hands or feet. [Note] on the product shape appearance milling shaping tungsten copper products processing, plastic processing lathes, grinders and after processing is not the same as a normal imagination.

If you have any interest in our tungsten copper alloy products, please do not hesitated to contact us by email:sales@chinatungsten.com or by telephone:86 592 5129696, we are at your service.

Selection of Tungsten Copper

Fine selection of tungsten copper tungsten, copper powder, soaked by the first-class sintering process is refined, and can withstand high temperature and high stress nearly 2,000, with a high melting point, high hardness, resistance to burning and good anti-adhesion, electrical erosion surface finish high, high precision, low loss. 

Tungsten Copper is widely used as high-voltage, ultra-contact switches and hydraulic breakers, protection ring, electric upsetting anvil material for conductive Tsui automatic submerged arc welding, plasma cutting machine nozzle, welding machine, welding machine welding head , seam welding wheels, air sealing point sockets spark electrode and the electrode, spot welding, butt welding materials.

If you have any interest in our tungsten copper alloy products, please do not hesitated to contact us by email:sales@chinatungsten.com or by telephone:86 592 5129696, we are at your service.

Tungsten copper electronics package and the heat sink material

Tungsten copper electronics package and the heat sink material, both having low expansion characteristics of tungsten, and high thermal conductivity characteristics with copper, the thermal expansion coefficient and thermal conductivity can be varied by adjusting the tungsten and copper components, thus giving tungsten-copper provides a more a wide range of applications.

Since tungsten copper material having high heat resistance and good thermal conductivity, while the wafer, and the thermal expansion coefficient of the ceramic material GaAs match, it is widely used in the semiconductor material. Suitable for high-power devices and packaging materials, heat sink materials, cooling components, such as ceramics and gallium arsenide base.

If you have any interest in our tungsten copper alloy products, please do not hesitated to contact us by email:sales@chinatungsten.com or by telephone:86 592 5129696, we are at your service.