Tungsten Copper Military

Tungsten copper military material is fabricated from the two mutual indissolvable metal of tungsten and copper, which combines the properties of good hardness, high melting point and low coefficient of thermal expansion of tungsten with copper’s of high conductivity and high thermal conductivity, it is a kind of well performance composite. Copper tungsten military material not only has good thermal conductivity and low thermal expansion coefficient, but also can design its thermal conductivity and coefficient of expansion by changing its tungsten copper content.
Tungsten copper military alloy is easy to be machined. And with this series of fine characteristic, so copper tungsten 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 industrial.
The theory of copper tungsten 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. The table below shows the properties of high temperature tungsten copper.

Tungsten Copper Military Nozzle

Tungsten copper military nozzle is an indispensable piece of equipment in many devices employing fluid as a working medium. The reaction force that results from the fluid acceleration may be employed to propel a jet aircraft or a rocket. Most military jet aircraft employ the simple convergent conical nozzle, with adjustable conical angle, as their propulsive device.
And tungsten copper military nozzle is also used in solid rocket motor. Solid rocket motor has four components mainly the shell, solid propellants, nozzle components and ignition devices. The formula of solid propellant and molding process, nozzle’s design and materials and manufacturing process, shell materials and manufacturing process are the most important link, which directly affects solid engine performance. Tungsten copper alloy with high melting temperature and ablation resistance will be the best materials for rocket motors.

Tungsten copper military gas vane

Tungsten copper military gas vane is a device for controlling aircraft, rockets, spacecraft, and the like during those parts of a flight where gas vanes are not effective.Tungsten copper military gas vanes vary in design from plates that change the thrust direction of a gas flow to complicated guide vanes. In aircraft, gas vanes are used during take off and landing conditions .While in rockets and spacecraft they are used during the initial portions of a flight and for control in non atmospheric conditions.
The theory is that when the solid rocket motor outbursts the high temperature, high speed gas flow ,tungsten copper military gas vane can make the copper molten in the structure of tungsten skeleton infiltrate , evaporate ,then effusion.
When the tungsten copper changing in the phase state, tungsten copper need to intake large mount of heat for the sake of cooling, and the good thermal conductivity of cooper makes the tungsten copper military gas vane with the function of cooling and keep the ablativity at low extent to satisfy the requirements of controlling system.

Tungsten Copper Heat Seat Properties

Tungsten copper heat seat is used extensively in thermal mounting plates, chip carriers, flanges, and frames for high-powered electronic devices. As a copper tungsten composite, it utilizes the thermal advantages of copper and the very low expansion characteristics of tungsten.
The combination of these two materials results in thermal expansion characteristics similar to those of silicone carbide, aluminum oxide, and beryllium oxide, used as chips and substrates. Because of CuW's thermal conductivity and expansion characteristics, it works well in densely packed circuits.
Features of CuW include:
Minimizes thermal stress.
Can be mounted to directly.
Can be plated with silver, gold, nickel, and copper.
Readily brazable without distortion or loss of physical properties.
Non-magnetic.
Maintains high physical properties over a wide range of temperatures.
Remains stable during temperature cycling.
High electrical conductivity, varying with the grade.
Superior thermal conductivity.
Various grades are available to match the characteristics and requirements of the material attached to it.
Can be readily machined into complicated shapes.
Parts can often be made to net or near net shape, because they are manufactured by powder metallurgy.

Tungsten Copper Heat Seat

Tungsten copper heat seat material is a composite of tungsten and copper. Tungsten Copper Alloy is the metal mostly used in heat sinks, which draw heat away from the more heat-sensitive elements inside electric devices. W-Cu material with both tungsten low expansion characteristics, but also has copper of high thermal conductivity properties, and the tungsten and copper in the thermal expansion coefficient and thermal conductivity can adjust the W-Cu composition and to design (with professional terms, tungsten and copper in the performance can be cut), and thus the application to the tungsten and copper brought great convenience. The produced tungsten copper alloy is with the good thermal expansion match with the following material:
Ceramic materials: Al2O3 (A-90, A-95, A-99), BeO (B-95, B-99), AlN, etc.;
Semiconductor materials: Si, GaAs, SiGe, SiC, InGaP, InGaAs, InAlGaAs, AlGaInP, AlGaAs, and so on.
Metal Material: Kovar alloy (4J29), 42 alloy;
Tungsten Copper Features:
The product does not add Fe, Co and other elements of the sintering activation, to maintain a high thermal conductivity.
The product can provide semi-finished tungsten or copper-plated Ni / Au finished.
The product has excellent copper tungsten tightness.
The tungsten and copper products have good size control, surface finish and flatness.
The product provides pre-W-Cu sales sale the whole process of technical services.

Applications for Copper Tungsten Bar

Because of the high electrical conductivity and low consumption, Copper tungsten bars are widely used to make Grid siderod, Lead, Support, and Electrode for the Gas discharge lamp.
1. Resistance welding electrode
It integrates such features of tungsten and copper as high temperature resistance, electrical arc ablation resistance, high proportion, good electrical and heat conductivity, being easy to cut and transpiration cooling. It also owns such advantages of tungsten as high hardness, melting point and adherence resistance. It is often used for projection welding and butt-welding electrode with wear and high temperature resistance.
2. Electric spark electrode
It is used for the electrode of mould made from tungsten steel and high-temperature and ultra hard alloy. The common electrode has high consumption and low rate. The high electrical ablation rate, low consumption ratio, precise electrode size and quality processing performance of Copper tungsten can ensure that the precision of the work piece is greatly enhanced.
3. High-voltage discharge tube electrode
When the high-voltage vacuum discharge tube is working, the temperature of contact material will rise to thousands degree centigrade within several tenths seconds. High ablation resistance, high toughness, good electrical and heat conductivity of Copper tungsten provide necessary conditions to stable operation of the discharge tube.
4. Electrical seal material
It 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 alloys with different tungsten proportions.

Tungsten Copper Electrodes

We Supply Tungsten Copper by Press, Sinter & Infiltration method with the tungsten content ranging from 50% to 90% by weight. The balance is copper.
1. Electrical Contact 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.
2. Electrodes for Spark Erosion
Tungsten Copper electrodes are best suitable material for electrical discharge machining  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.
3. Resistance Welding
Tungsten Coppers are used for some spot welding application of low conductivity materials, and as die inserts for flash and butt resistance welding applications.
4. Heat Sinks
Modern computer processors like the 586 series and higher, generate a heat output per square centimeter similar to that of a household cooker surface. Tungsten-copper heat sinks and the processor fan remove the heat.

Tungsten Copper Machining

The principal Tungsten/Copper alloys contain from 2% to 45% copper by weight. The addition of copper increases the thermal conductivity of the alloy while reducing the hardness and modulus of rupture.
The machining and grinding characteristics of tungsten/copper alloys are similar to those of hard grey cast iron. Being non-porous, standard water soluble coolants may be used if desired, but are not required. Each machine shop usually has its individual machining or grinding practice and, therefore, the information presented should be considered as a guide only.
Tool: Carballoy, grade 883 or equivalent. Grind tools with 0 deg. rake, 8-12 deg. clearance, and .010" to .025" nose radius. The nose radius can increase with the size of the work. For fine finish, stone small flat on tool parallel to work. Suggest resting stone on work when honing tool.
Turning & Boring: Roughing, approximately .030" deep and .020" per revolution feed. Finishing, .002" to.005" depth of cut and .001" to .002" per revolution feed. Turning speed, 300-500 surface feet per minute. Do not use lubricant or coolant.
Shaping: Tool Speed: 43" per minute for Tungsten-Copper 25% alloy.
Depth of Cut: .030"
Feed: .020" per stroke
Milling: Drilling High Speed steel drills and taps may be used.
Through Tapping: Holes are recommended. Material must be firmly held. Hand feed-lubricant and cutting oil acceptable.
Rough Grinding: Is best done with 80 grit resin bonded wheels of medium hardness; .015" per pass on Tungsten-Copper 25% alloy. Use water or water soluble oil coolant.
Joining: Material may be silver brazed, or copper brazed in a hydrogen atmosphere.
We hope the preceding information will be helpful.

Applications for Copper Tungsten Bar

Because of the high electrical conductivity and low consumption, Copper tungsten bars are widely used to make Grid siderod, Lead, Support, and Electrode for the Gas discharge lamp.
1. Resistance welding electrode
It integrates such features of tungsten and copper as high temperature resistance, electrical arc ablation resistance, high proportion, good electrical and heat conductivity, being easy to cut and transpiration cooling. It also owns such advantages of tungsten as high hardness, melting point and adherence resistance. It is often used for projection welding and butt-welding electrode with wear and high temperature resistance.
2. Electric spark electrode
It is used for the electrode of mould made from tungsten steel and high-temperature and ultra hard alloy. The common electrode has high consumption and low rate. The high electrical ablation rate, low consumption ratio, precise electrode size and quality processing performance of Copper tungsten can ensure that the precision of the work piece is greatly enhanced.
3. High-voltage discharge tube electrode
When the high-voltage vacuum discharge tube is working, the temperature of contact material will rise to thousands degree centigrade within several tenths seconds. High ablation resistance, high toughness, good electrical and heat conductivity of Copper tungsten provide necessary conditions to stable operation of the discharge tube.
4. Electrical seal material
It 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 alloys with different tungsten proportions.

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 alloy 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 alloy 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 Heat Spreader

Introduce(detail):
A heat sink uses its extended surfaces to increase the surface area in contact with the cooling fluid, the air for example. The term is not meant literally, as a heat sink does not have a "magical ability to absorb heat like a sponge and send it off to a parallel universe". Heat transfer theory helps explain practical aspects of how heat sinks work, and can also help to clear up common misconceptions and design mistakes. Approach air velocity, choice of material, fin (or other protrusion) design and surface treatment are some of the design factors which influence the thermal resistance, i.e. thermal performance, of a heat sink. One engineering application of heat sinks is in the thermal management of electronics, often computer CPU or graphics processors. For these, heat sink attachment methods and thermal interface materials also influence the eventual junction or die temperature of the processor(s). Theoretical, experimental and numerical methods can be used to determine a heat sink's thermal performance.
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. 
Advantages
High thermal conductivity
Excellent hermeticity
Excellent flatness, surface finish, and size control
Semi-finished or finished (Ni/Au plated) products available

Tungsten Copper for Dart

Today's standard material of tungsten barrel is Tungsten-Nickel-Iron. Tungsten is a very dense material, so darts with a considerable weight can be made quite slim. However, before the tungsten revolution darts were mainly made of brass.
Not only has the density of tungsten and anti-wrestling, while a brass color, copper tungsten darts has become the choice of many people.
Tungsten copper darts, is a much softer material. To show the color of brass, they generally with about 70%~80% Tungsten content. Some darters, especially old-timers, like the grip of these darts as the metal surface develops microscopic pits after they have been thrown for a while.  Copper tungsten darts have become much less common in recent years, with Nickel/Tungsten darts becoming the primary type of high-density darts.

Tungsten Copper Rod for EDM

Our tungsten copper rod for EDM die and mould application has below advantage:
-High electrical conductivity bring very good erosion rate. Improve productivity.
-High hardness maintains long life time.
-High density characters present the lowest corner wear.
-Dia. 1mm rod bend demo shows our super infiltration process control capability.
Our tungsten copper rod for EDM die and mould application has below advantage:
-High electrical conductivity bring very good erosion rate. Improve productivity.
-High hardness maintains long life time.
-High density characters present the lowest corner wear.
-Dia. 1mm rod bend demo shows our super infiltration process control capability.

Copper Tungsten Sheet Introduction

1, Main grades: CuW50, CuW55, CuW60, CuW65, CuW70, CuW85

2, Length: 5mm-200mm

3, Width: 5mm-200mm

4, Thickness: 0.1mm-5.0mm

5, Semi-finished or finished (Ni/Au plated) products available

Copper tungstensheet 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.

It 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 Machining

The principal tungsten copper alloys contain from 2% to 45% copper by weight. The addition of copper increases the thermal conductivity of the alloy while reducing the hardness and modulus of rupture.

The machining and grinding characteristics of tungsten/copper alloys are similar to those of hard grey cast iron. Being non-porous, standard water soluble coolants may be used if desired, but are not required. Each machine shop usually has its individual machining or grinding practice and, therefore, the information presented should be considered as a guide only.

Tool: Carballoy, grade 883 or equivalent. Grind tools with 0 deg. rake, 8-12 deg. clearance, and .010" to .025" nose radius. The nose radius can increase with the size of the work. For fine finish, stone small flat on tool parallel to work. Suggest resting stone on work when honing tool.

Turning & Boring: Roughing, approximately .030" deep and .020" per revolution feed. Finishing, .002" to.005" depth of cut and .001" to .002" per revolution feed. Turning speed, 300-500 surface feet per minute. Do not use lubricant or coolant.

Shaping: Tool Speed: 43" per minute for Tungsten-Copper 25% alloy.

Depth of Cut: .030"

Feed: .020" per stroke

Milling: Drilling High Speed steel drills and taps may be used.

Through Tapping: Holes are recommended. Material must be firmly held. Hand feed-lubricant and cutting oil acceptable.

Rough Grinding: Is best done with 80 grit resin bonded wheels of medium hardness; .015" per pass on tungsten copper 25% alloy. Use water or water soluble oil coolant.

Joining: Material may be silver brazed, or copper brazed in a hydrogen atmosphere.

We hope the preceding information will be helpful.

Tungsten Copper Military

Tungsten copper military material is fabricated from the two mutual in dissolvable metal of tungsten and copper, which combines the properties of good hardness, high melting point and low coefficient of thermal expansion of tungsten with coppers of high conductivity and high thermal conductivity; it is a kind of well performance composite. Copper tungsten military material not only has good thermal conductivity and low thermal expansion coefficient, but also can design its thermal conductivity and coefficient of expansion by changing its tungsten copper content. 

Tungsten copper military alloy is easy to be machined. And with this series of fine characteristic, so copper tungsten 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 industrial.

The theory of copper tungsten 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. The table below shows the properties of high temperature tungsten copper. 

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.

Typical Properties of Commonly Used Copper Tungsten Composition

Typical Properties of Commonly Used Copper Tungsten Composition

Composition	Density	Hardness	Resistivity	IACS	Bending Strength
wt. %	g/cm3≥	HB Kgf/mm2≥	µΩ.cm≤	%≥	Mpa≥
W50/Cu50	11.85	115	3.2	54	--
W55/Cu45	12.30	125	3.5	49	--
W60/Cu40	12.75	140	3.7	47	--
W65/Cu35	13.30	155	3.9	44	--
W70/Cu30	13.80	175	4.1	42	790
W75/Cu25	14.50	195	4.5	38	885
W80/Cu20	15.15	220	5.0	34	980
W85/Cu15	15.90	240	5.7	30	1080
W90/Cu10	16.75	260	6.5	27	1160

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.

Copper Tungsten Alloy

CopperTungsten alloy is the composite of Tungsten and Copper, which own the excellent performances of Tungsten and Copper, such as heat-resistant, ablate-resistant, high-intensity, excellent thermal and electrical conductivity. It is easy to be machined. It is used widely in such industries as engine, electrical power, electron, metallurgy, spaceflight and aviation. Using CIP formation, sintered tungsten skeleton and infiltrating copper (silver) technology, large size and special shape products of tungsten-copper (silver) composites with 6-90 percent of copper are produced, such as electric contacts, electrode, refractory parts, heat sinks and parts of rocket, We can also produce sheet material, tubing, plate and other small products by mould pressing, extrusion pressing and MIM.

Tungstencopper alloys are used where the combination of high heat resistance, high electrical and/or 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 alloy is resistant to erosion by electric arc. WCu alloys are also used in electrodes for electrical discharge machining and electrochemical machining.

The CuW75 alloy, with 75% of 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.

Machining/Grinding Characteristics of Tungsten Copper Alloy

The machining and grinding characteristics of tungsten copper alloy are similar to those of hard grey cast iron. Being nonporous, standard water soluble coolants may be used if desired, but are not required. Each machine shop usually has its individual machining or grinding practice and, therefore, the information presented should be considered as a guide only.

Tool: Carb alloy, grade 883 or equivalent. Grind tools with 0 deg. rake, 8-12 deg. clearance, and .010" to .025" nose radius. The nose radius can increase with the size of the work. For fine finish, stone small flat on tool parallel to work. Suggest resting stone on work when honing tool.
Turning & Boring: Roughing, approximately .030" deep and .020" per revolution feed. Finishing, .002" to.005" depth of cut and .001" to .002" per revolution feed. Turning speed, 300-500 surface feet per minute. Do not use lubricant or coolant.

Shaping: Tool Speed: 43" per minute for Tungsten Copper 25% alloy.

Depth of Cut: .030"

Feed: .020" per stroke

Milling: Drilling High Speed steel drills and taps may be used.

Through Tapping: Holes are recommended. Material must be firmly held. Hand feed-lubricant and cutting oil acceptable.

Rough Grinding: is best done with 80 grit resin bonded wheels of medium hardness; .015" per pass on Tungsten Copper 25% alloy.

Use water or water soluble oil coolant.

Joining: Material may be silver brazed, or copper brazed in a hydrogen atmosphere.

Tungsten Copper Bar

 What is tungsten copper bar?

Tungstencopper bar is a combination of tungsten and copper. 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.

Applications For Tungsten Copper Bar

Because of the high electrical conductivity and low consumption, tungsten copper bars are widely used to make Grid side rod, Lead, Support, and Electrode for the Gas discharge lamp.

Tungsten Copper Heat Sink

Introduce:

A heat sink uses its extended surfaces to increase the surface area in contact with the cooling fluid, the air for example. The term is not meant literally, as a heat sink does not have a "magical ability to absorb heat like a sponge and send it off to a parallel universe". Heat transfer theory helps explain practical aspects of how heat sinks work, and can also help to clear up common misconceptions and design mistakes. Approach air velocity, choice of material, fin (or other protrusion) design and surface treatment are some of the design factors which influence the thermal resistance, i.e. thermal performance, of a heat sink. One engineering application of heat sinks is in the thermal management of electronics, often computer CPU or graphics processors. For these, heat sink attachment methods and thermal interface materials also influence the eventual junction or die temperature of the processor(s). Theoretical, experimental and numerical methods can be used to determine a heat sink's thermal performance.

TungstenCopper 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.

Advantages:

High thermal conductivity

Excellent hermetic

Excellent flatness, surface finish, and size control

Semi-finished or finished (Ni/Au plated) products available

It is a composite of tungsten and copper. By controlling the content of tungsten, we can design its coefficient of thermal expansion (CTE), matching that of the materials, such as Ceramics (Al2O3, BeO), Semiconductors (Si), Kovar, etc.

Specifications of Copper Tungsten Alloy

Code No.	Chemical Composition %			Mechanical properties
	CU	Impurity	W	Density (g/cm3)	Hardness HB	RES(cm)	Conductivity IACS/%	TRS/ Mpa
CuW(50)	50+2.0	0.5	Balance	11.85	115	3.2	54
CuW(55)	45+2.0	0.5	Balance	12.30	125	3.5	49
CuW(60)	40+2.0	0.5	Balance	12.75	140	3.7	47
CuW(65)	35+2.0	0.5	Balance	13.30	155	3.9	44
CuW(70)	30+2.0	0.5	Balance	13.80	175	4.1	42	790
CuW(75)	25+2.0	0.5	Balance	14.50	195	4.5	38	885
CuW(80)	20+2.0	0.5	Balance	15.15	220	5.0	34	980
CuW(85)	15+2.0	0.5	Balance	15.90	240	5.7	30	1080
CuW(90)	10+2.0	0.5	Balance	16.75	260	6.5	27	1160

Tungsten Copper EDM and ECM

Our tungsten copper composites are used worldwide for electrical discharge machining (EDM) and electrochemical machining (ECM) electrodes. All composite material is manufactured by the press, sinter, and infiltrate process; adhering to strict quality checks every step of the way. You can rely on the quality of our tungsten composites to provide consistent, homogeneous materials that yield high and even burning rates

Tungsten copper alloys are used worldwide for EDM (Electrical Discharge Machining) and ECM (Electrochemical Machining) electrodes. All material is manufactured by the press, sinter, and infiltrate process. Virgin tungsten powders are used, resulting in consistent homogeneous material giving high and even burning rates. Tungstencopper is used in plunger/sinker applications where intricate definition is required, especially in tungsten carbide.