Tungsten Copper Alloy Bar
2. Catalog: Tungsten alloy
3. Material: Tungsten Copper Alloy (WCu alloy)
4. Grade: W80Cu20, W75Cu25, W70Cu30, W60Cu40, ect.
5. Form: Bar, Rod, Tube, Pipe, Block
6. Shape: Round, Circle, Rectangle, Customization
6. Specification: Dia(1-60)mm, Length<500mm
7. Surface: Ground finished surface, Polished
8. Manufacturing process: Powder metallurgy, Pressing, Sintering, Infiltration, Forging, Precision machining
9. Application: Electronic industry, Electrical discharge machining, high-temperature structural material, Military industry and aerospace
10. Standard: ASTM B702
Tungsten Copper Alloy Bar (WCu) is a composite material combining tungsten's high temperature resistance with copper's excellent thermal and electrical conductivity, widely used in electrical contacts, EDM electrodes, and thermal management applications.
The performance parameters of tungsten and copper are shown in the figure below:
|
Metal |
Density (g/cm) |
Thermal Expansivity (10-6/℃) |
Thermal Conductivity w/(m·k) |
Heat Capacity J/(kg·℃) |
Elasticity Modulus (GPa) |
Poisso Density |
Melting Point(℃) |
Strength (MPa) |
|
Tungsten |
19.25 |
4.5 |
174 |
136 |
411 |
0. 28 |
3410 |
550 |
|
Copper |
8.92 |
16.6 |
403 |
385 |
145 |
0. 34 |
1083 |
120 |
Product Specification
|
Tungsten Copper Alloy Bar Specification |
||||||
|
Diameter (mm) |
Tolerance (mm) |
Length (mm) |
Tolerance (mm) |
Surface |
Flatness Tolerance |
Roughness |
|
0.5-1 |
+0.02 |
100 |
+5 |
Polished, Ground Finished |
<4um |
Ra1.6-Ra0.8 |
|
2-18 |
+0.02 |
100, 200, 300 |
+5 |
|||
|
20-60 |
+0.6 |
100, 200, 300 |
+5 |
|||
|
Copper Tungsten Round and Square Bar and Rod |
||
|
Product |
Diameter |
Length or W*H |
|
Wire |
Dia 0.5-Dia1 |
175, 200 |
|
Rod |
Dia 2-Dia70 |
175, 200, 300 |
|
Square |
6*6-40*40 |
50, 75, 100 |
|
Plate |
1-60 |
80*80- 200*400 |
|
Tungsten Copper Alloy Bar Chemical Components and Physical Properties |
||||||||
|
Grade |
Chemical Elements (weight %) |
Density |
Hardness |
Electrical Resistivity |
Electrical Conductivity |
Bending Resistance |
||
|
Cu |
Impurities ≤ |
W |
g/cm³ ≥ |
HB Kgf/mm³≥ |
μΩ.Cm ≤ |
% ≥ |
MPa ≥ |
|
|
W93Cu07 |
7±2.0 |
0.5 |
Bal |
17.3 |
270 |
6.3 |
25 |
1230 |
|
W90Cu10 |
10±2.0 |
0.5 |
Bal |
16.75 |
260 |
6.5 |
27 |
1160 |
|
W85Cu15 |
15±2.0 |
0.5 |
Bal |
15.9 |
240 |
5.7 |
30 |
1080 |
|
W80Cu20 |
20±2.0 |
0.5 |
Bal |
15.15 |
220 |
5.0 |
34 |
980 |
|
W75Cu25 |
25±2.0 |
0.5 |
Bal |
14.5 |
195 |
4.5 |
38 |
885 |
|
W70Cu30 |
30±2.0 |
0.5 |
Bal |
13.8 |
175 |
4.1 |
42 |
790 |
|
W65Cu35 |
35±2.0 |
0.5 |
Bal |
13.3 |
155 |
3.9 |
44 |
- |
|
W60Cu40 |
40±2.0 |
0.5 |
Bal |
12.75 |
140 |
3.7 |
47 |
- |
|
W55Cu45 |
45±2.0 |
0.5 |
Bal |
12.3 |
125 |
3.5 |
49 |
- |
|
W50Cu50 |
50±2.0 |
0.5 |
Bal |
11.85 |
115 |
3.2 |
54 |
- |
Advantages
Thermal & Electrical Conductivity
Combines copper's superior conductivity with tungsten's stability, ensuring efficient heat dissipation and reliable electrical performance in high-power applications.
Arc & Wear Resistance
Strong resistance to arc erosion and mechanical wear makes it ideal for high-voltage switch contacts and EDM electrodes under extreme operating conditions.
Stability
Maintains dimensional stability under rapid thermal cycling, reducing deformation and improving reliability in precision electronic and aerospace components.
High Temperature Strength
Withstands extreme temperatures while retaining mechanical strength, suitable for aerospace, high-temperature tooling, and thermal management systems.
Application
Electrical Contacts & Switchgear
Widely used in high-voltage circuit breakers and electrical contacts due to arc resistance and conductivity.
EDM Electrodes
Ideal for electrical discharge machining (EDM) electrodes, offering high wear resistance and dimensional stability during precision machining.
Thermal Management Components
Applied in heat sinks and heat spreaders for electronics and power devices, ensuring efficient heat dissipation and thermal stability.
Aerospace & Defense Components
Suitable for high-temperature and high-stress environments in aerospace systems, providing reliability under extreme conditions.
Resistance Welding Electrodes
Used in resistance welding applications where high thermal conductivity and wear resistance are required.
Product Production Process
Tungsten copper alloy bar is usually produced by powder metallurgy technology.
Its process flow is: Powder - Mixing ingredients - Pressing and molding - Sintering and infiltration - Forging or swaging- Annealing- Precision machining
Product Packaging
- The products will be packed in standard export three-ply plywood cases or carton
- Plastic shock absorption foam is tightly filled in the box
- Place desiccant in the box
- Small size will be vacuum-packed
FAQ
What properties can be adjusted by composition?
A: Increasing tungsten improves strength and arc resistance, while higher copper content enhances electrical and thermal conductivity.
How does it perform in thermal management applications?
A: Combines high thermal conductivity with low thermal expansion, making it effective for heat dissipation while maintaining dimensional stability.
Can tungsten copper bars be used as electrodes?
A: Yes, widely used for EDM electrodes and resistance welding electrodes due to their wear resistance and electrical performance.
What surface finishes are available?
A: Can be supplied as machined, ground, or polished, depending on dimensional accuracy and application requirements.
Is customization available?
A: Yes, size, composition ratio, and surface condition can be tailored to specific technical requirements.
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