MT-104 Molybdenum Alloy

MT-104 is a powder-metallurgical alloy developed by Global Tungsten & Powders Corp. for elevated temperature applications requiring higher hardness and strength than unalloyed molybdenum. The nominal composition of MT-104 by weight percentage is 0.5% Ti, 0.08% Zr, 0.025% C, with the balance Mo.

Global Tungsten & Powders Corp. offers MT-104 in pressed and sintered shapes as cylinders, slabs, rings, and tubes specifically for extruding, forging, or rolling.  MT-104 has pronounced advantages over vacuum-arc-melted material (TZM) of similar composition. MT-104 is significantly less expensive to produce.  MT-104 has a homogeneous composition since segregation during solidification cannot occur.  These advantages directly result from powder-metallurgical preparation of the alloy.

The properties of worked MT-104 are markedly superior to worked unalloyed molybdenum. Applications where MT-104 has demonstrated superior performance are:


Aerospace Applications

  • Rocket nozzles
  • Leading edges on reentry vehicles
  • Vector controls


High-Temperature Furnace Parts

  • Heat shields
  • Supports
  • Hearth plates
  • Heating elements
  • Susceptor rings for induction furnaces


Isothermal Forging Compounds for Titanium and Superalloy Forging

  • Dies
  • Die inserts


Extrusion Component for Al, Mg, Fe, and Zn

  • Dies
  • Punches for tubing extrusion


Properties of MT-104 Which Recommend the Use of It for Other Applications

  • High-thermal conductivity and high hardness
  • High elastic modulus
  • Excellent resistance to chemical attack
  • Good resistance to thermal shock


Like molybdenum and all molybdenum alloys, MT-104 oxidizes rapidly in air above
1200 °F (650 °C) and must be protected by coatings/ non-oxidizing atmospheres.


Pressed and sintered MT-104 is available in shapes such as cylindrical billets, slabs, rings, and tube blanks. Inquiries concerning special shapes and cross sections greater than those given below are welcomed. Billets weighing over 13,000 pounds have been pressed, sintered, and forged successfully.

Ryan Smith
Product Manager
Office Phone: +1 570 268 5311
Cell Phone: +1 570 239 5474