Consisting of pure tungsten (W) powder suspended in a matrix of copper (Cu), these alloys are readily machinable and known for good thermal and electrical conductivity, low thermal expansion, being non-magnetic, good performance under vacuum, and resistance to erosion from arcing. Thus, they are often used as electrical contacts, particularly in high voltage applications. Most sizes and shapes can be supplied with short lead times. We can also manufacture parts from these materials to your specifications.

Tungsten Copper Alloy Advantages

• High arc resistance combined with good electrical conductivity
• High thermal conductivity
• Low thermal expansion

Tungsten Copper Alloy Applications

• Electrodes for resistance welding
• Arc contacts and vacuum contacts in high/medium voltage breakers or vacuum interrupters
• Electrodes in electric spark erosion (EDM) cutting machines
• Heat sinks and heat spreaders for passive cooling of electronic devices
• Electronic packaging materials
• Radio base station components
• IGBT modules for hybrid-electric (HEV) and full-electric (EV) vehicles

Like tungsten, molybdenum is one of the refractory metals. It does not have the density of tungsten, but still has a relatively high melting point and is somewhat easier to machine. Midwest Tungsten Service provides molybdenum in rod, sheet, and bar. We also provide material trays, heat shields, nuts, and threaded rod for the vacuum furnace industry, as well as glass melting electrodes and vacuum evaporation boats.

Molybdenum Advantages

• High melting point

Molybdenum Applications

• Vacuum furnace hardware

TZM stands for Titanium-Zirconium-Molybdenum.

TMZ Molybdenum Advantages

• Higher tensile strength than pure molybdenum
• Higher creep strength than pure molybdenum
• Higher recrystallization temperature than pure molybdenum

TMZ Molybdenum Applications

• Vacuum furnace industry