Customization: | Available |
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Type: | Cu (Copper/Copper-Alloy Welding Electrode) |
Material: | Wcu 70/30, Wcu 75/25, Wcu 80/20, Wcu 90/10 |
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Composition | Density (g/cm3) | Electrical Conductivity (IACS% Min.) | Thermal Conductivity (W/m-K-1) | Hardness (HRB Min.) |
WCu 70/30 | 14.0 | 52.1 | 230 | 95 |
WCu 75/25 | 14.8 | 45.2 | 220 | 99 |
WCu 80/20 | 15.6 | 43 | 200 | 102 |
WCu 90/10 | 16.75 | 32.5 | 180 | 107 |
When processing the Sintered Tungsten Copper Alloys Weld Electrodes, the purity tungsten is pressed, sintered and infiltrated by the oxygen-free copper after the consolidating steps which represents a homogeneous microstructure and low level of porosity. The combination of copper's conductivity with tungsten's high density, hardness and high melting point produces a composite with many preeminent properties of both elements. Copper-infiltrated tungsten boasts such properties as high resistance to high-temperature and arc-erosion, excellent thermal and electrical conductivity and a low coefficient of thermal. The physical and mechanical properties and melting point of tungsten copper material will be positively or oppositely affected by varying the amount of copper tungsten in the composite. As the copper content gradually increases, the electrical and thermal conductivity and thermal expansion exhibit a tendency of being stronger. But the density, electrical resistance, hardness and strength will be weakened when infiltrated with less amount of copper. In the end, an appropriate chemical composition is the most importance when considering tungsten copper for specific application need.
The use of Tungsten copper (W-Cu) has greatly increased in many fields and applications due to its unique mechanical and thermophysical properties. Tungsten copper materials exhibit high outstanding performance in the aspects of hardness, strength, conductivity, high temperature, and arc erosion resistance. It has been extensively used for the production of electrical contacts, heat sinkers and spreaders, die-sinking EDM electrodes and fuel injection nozzles.
The most significant disadvantage of directly sintering tungsten copper is that tungsten copper's electrical and thermal conductivity is reduced by activation sintering.
Materials | Wt% Tungsten Content | Wt% Copper Content |
Grade | RWMA Class | Density (g/cc) | Electrical Conductivity (%IACS) | Hardness (HRB) |
W70Cu30 | 70 | Balance | A5WC | 10 | 14.18 | 47-52 | 88-95 |
W75Cu25 | 75 | Balance | A10WC | 11 | 14.80 | 42-50 | 96-99 |
W80Cu20 | 80 | Balance | A30WC | 12 | 15.60 | 41-49 | 99-104 |
For three decades Kefeng Powder Metallurgy has pioneered and produced the best tungsten alloy metal solutions for the world's products, applications and industries.