... is 4.506-4.516g/cm^3, melting point is 1668, boiling point is 3535. In the appropriate oxidizing environment ... such as aircraft, rockets, missiles and spacecraft, ship manufacture, chemical industry, conventional weapons, manufacturing, metallurgical industry, health care, ultra ... 20ASTM F67 Text provide Bao Ti Center Physical and Chemical Test Report or Northwest Institute For Non-ferrous Metal ...