High melting point, High-density, high temperature oxidation resistance, long service life, resistance to corrosion. 1. Grand:W1,W22. Purity :>= ... Feature: High melting point, High-density, high temperature oxidation resistance, long service life, resistance to corrosion..6. Chemical composition Main Comp ... to guns, artillery, rockets, satellite, airplane and ship. 99.95% Round Tungsten Bar