Tungsten Wire Type 1A (As drawn) Commercially Pure Min. 99.95 percent non-sag and cut (ASTM F288 Type 1A) has excellent strength at high temperature and exceptional resistance to corrosion with good electrical and heat conducting properties. Its melting point is 6150 F (3400 C), the highest of any metal. Tungsten also has the highest modulus of elasticity of all metals. Tungsten Wire is straight, 30 or 60 inches long. Chemically, tungsten is relatively inert. Pure tungsten metal in the form of wire, rod and sheet is important in the electric lamp and electrical industries. Industrial applications include electrodes for inert gas welding and electrical discharge machining. ASTM F 288-96 Type 1A Commercially pure 99.95 percent.