Molybdenum’s prime alloy is TZM. This alloy contains 99.2% min. to 99.5% max. of Mo, 0.50% Ti and 0.08% Zr with a trace of C for carbide formations. TZM offers twice the strength of pure moly at temperatures over 1300’C. The recrystallization temperature of TZM is approximately 250’C higher than moly and it offers better weldability.