The Tungsten-Copper(5W3,10W3,30W3) are normally Press-sinter-infiltrated materials with the tungsten content ranging from 50%to 90% by weight.The balance is copper.

The materail is a kind of high melting temperatures,high strengths refractory metals,and good resistance to arc erosion,welding ,mechanical wear and deformation.

They are also used in resistance welding, electrical discharge machining,electro-chemical machining and semi-conductor bases,gas filled,oil or vacuum devices, air circuit breakers,etc.

Mechnanical Properties:

Material  Composition    Density     Electrical Conductivity     Hardness

  5W3      W70        13.85           48% IACS           95HRB

 10W3      W75        14.55           45%IACS           98HRB

 30W3      W80         15.2           41%IACS           103HRB