Tungsten Copper Bar, Elkonite® ASTM B702 RWMA Class 10,Class 11,
Class 12 The tungsten copper bar is an alloy composed of tungsten and
copper, and the copper content of the commonly used alloy is 10% to
50%. The alloy is prepared by powder metallurgy method and has good
electrical and thermal conductivity, good high temperature strength
and certain plasticity. At very high temperatures, such as above
3000C, the copper in the alloy is liquefied and evaporated. The tungsten copper bar is an alloy composed of tungsten and
copper, and the copper content of the commonly used alloy is 10% to
50%. The alloy is prepared by powder metallurgy method and has good
electrical and thermal conductivity, good high temperature strength
and certain plasticity. At very high temperatures, such as above
3000C, the copper in the alloy is liquefied and evaporated, which
absorbs a large amount of heat and lowers the surface temperature
of the material. So this type of material is also known as metal
sweating material.
Tungsten copper bar grade: WD10070;
Model: 55W45Cu, 68W32Cu, 70W30Cu, 75W25Cu, 80W20Cu, 85W15Cu,
90W10Cu. Tungsten Copper Bar Physical and Mechanical Properties:| Composites | Nominal Composition
(% Weight) | Density
(g/cm3, ≥) | Electrical Resistivity
(20°C, µΩ·cm, ≤) | Electrical conductivity
(IACS%, ≥) | Hardness(≥)
Brinell Hardness | Bending Strength | | MPa | Kgf/mm2 | MPa | Kgf/mm2 | | CuW50 | 50% Copper
50% Tungsten | 11.85 | 3.2 | 54 | 1128 | 115 | --- | --- | | CuW55 | 45% Copper
55% Tungsten | 12.3 | 3.5 | 49 | 1226 | 125 | --- | --- | | CuW60 | 40% Copper
60% Tungsten | 12.75 | 3.7 | 47 | 1373 | 140 | --- | --- | | CuW65 | 35% Copper
65% Tungsten | 13.3 | 3.9 | 44 | 1520 | 155 | --- | --- | | CuW70 | 30% Copper
70% Tungsten | 13.8 | 4.1 | 42 | 1716 | 175 | 667 | 68 | | CuW75 | 25% Copper
75% Tungsten | 14.5 | 4.5 | 38 | 1912 | 195 | 706 | 72 | | CuW80 | 20% Copper
80% Tungsten | 15.15 | 5.0 | 34 | 2158 | 220 | 736 | 75 | | CuW85 | 15% Copper
85% Tungsten | 15.9 | 5.7 | 30 | 2354 | 240 | 765 | 78 | | CuW90 | 10% Copper
90% Tungsten | 16.75 | 6.5 | 27 | 2550 | 260 | 804 | 82 |
Tungsten Copper Bar are widely used where the combination of good
electrical and/or thermal conductivity and low thermal deformation
is necessary, for example:· In electric resistance welding as
electrical contacts or heat sinks.· In electrodes for electrical
discharge machining (EDM) and electrochemical machining (ECM). |
