... of tungsten to the matrix (W content 85-99%), and add a Ni, Cu, Co, Mo, Cr alloy elements. The alloy composition ... -19.0g/cm3, was called the world a high proportion alloy, which also features a series of outstanding features, than major: general ... : only come iron or steel, electrical properties can be good; a good solderability and machining. Given the high proportion of the ...