... high proportion of material is an alloy of tungsten to the matrix (W content 85-99%), and add ... W-Ag, and other major series, the density of up to 16 .5-19.0g/cm3, was called the world a ... of outstanding features, than major: general share of 16.5-18.75g/cm3, high strength: tensile strength ... of 700-1000Mpa, ray absorption ability: the ability to lead than high 30-40%, the thermal conductivity: Die ...