Tungsten and tungsten silver material, like copper material, but also a fake alloy

Tungsten and silver materials composed of two elements. Tungsten and tungsten silver material, like copper material, but also a fake alloy, its preparation method and tungsten copper materials similar. Tungsten silver conductive materials, thermal conductivity than copper tungsten material is good, other properties similar.  sandblasted tungsten target  silver material made ​​of copper materials are simultaneously used as electrical switches and contacts (contacts) in the 1930s. The late 1950s, the development of  tungsten electrode  rockets, gas temperature and pressure greatly improved, pure tungsten rocket nozzle can not meet the original use of such conditions, when other materials can not meet the requirements.