Copper Tungsten
Applications for
Copper Tungsten
Resistance Welding
Heat Sinks
Electrical Discharge Machining
Electro-chemical machining
Electrical Contacts
Copper Tungsten Class 10 (1W3, 5W3)
Class 10 material is recommended as facings or
inserts for projection welding electrodes and flash and butt welding
dies where high electrical conductivity is desirable and a degree of
malleability is necessary.
Copper Tungsten Class 11 (10W3)
Class 11 (a harder material than Class 10) is recommended as facing
inserts for flash and butt welding dies and general purpose
projection welding electrodes. It may also be used as seam
welder bearing inserts and facing for electro-forming or
electro-forging, such as stainless steel.
Copper
Tungsten Class 12 (30W3)
Class 12 material is specifically recommended for heavy duty
projection welding electrodes and for die facings in electro-forming
and electro-forging applications. It is suitable as die
material for electrical upsetting of rivets and studs.
| RWMA Classification |
Properties | Hardness | Conductivity (%) | Tensile Strength |
| Class 10 (1W3) |
55W; 45CU | B77 | 53 | 110 ksi |
| Class 10 (5W3) |
70W; 30CU | B95 | 48 | 140 ksi |
| Class 11 (10W3) |
75W; 25CU | B98 | 45 | 150 ksi |
| Class 12 (30W3) |
80W; 20CU | B103 | 41 | 170 ksi |