Low Thermal Expansion W75Cu25 Copper Tungsten Bar For Electric
Spark WeldingCopper Tungsten Bar is an alloy of tungsten and copper.
Tungsten copper alloy is made of fine tungsten and copper powder
through the first-class immersion sintering process and the process
of isostatic pressing - high-temperature sintering tungsten
skeleton - copper infiltration. Specifications of Copper Tungsten BarCode 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 |
Copper Tungsten Bar Picture:
Physical properties of Copper Tungsten BarTungsten copper alloy (tungsten W=70 copper Cu=30) Conductivity% IACS ≥ 42 Density=14g/cm3 Softening temperature ℃ ≥ 700 Tensile strength ≥ 66Mpa Hardness ≥ 184HV Tungsten copper alloy can withstand nearly 2000 ℃ high temperature
and high stress. It has the characteristics of high melting point,
high hardness, resistance to burning and good resistance to
adhesion. The surface finish of electric erosion products is high,
the precision is extremely high, and the loss is low.
Applications of Copper Tungsten Bar- Tungsten copper alloy is widely used as the contact and protective
ring of high-voltage and superhydraulic switches and circuit
breakers, the material of electric heating block block, the
conductive nozzle of automatic submerged arc welding, the nozzle of
plasma cutting machine, as well as the welding head of electric
welding machine and butt welding machine, the roller welding wheel,
as well as the materials for making sealing gas socket electrode
and electric spark electrode, spot welding, butt welding, etc
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