TZM is an alloy of 0.50% Titanium, 0.08% Zirconium and 0.02% Carbon with the balance Molybdenum. TZM is manufactured by either P/M or Arc Cast technologies and is of great utility due to its high strength/high temperature applications, especially above 2000'F.
TZM has a higher recrystallization temperature, higher strength, hardness and good ductility at room and elevated temperatures than normal molybdenum. TZM offers twice the strength of pure molybdenum at temperatures over 1300'C. The recrystallization temperature of TZM is approximately 250'C higher than molybdenum and it offers better weldability. In addition, TZM exhibits good thermal conductivity, low vapor pressure, and good corrosion resistance and is machinable.
TZM costs approximately 25% more than pure molybdenum and costs only about 5-10% more to machine. For high strength applications such as rocket nozzles, furnace structural components, and forging dies, it can be well worth the cost differential.
TZM is available in sheet and rod form in basically the same size range as moly with the exception of thin foil. SMC is experienced in the fabrication of TZM products.