Tungsten Carbide

Cemented carbide is a sintered composite of Tungsten Carbide particles, with a binder metal such as Cobalt or Nickel. Titanium Carbide and Tantalum Carbide are added to provide heat resistance, while Vanadium Carbide and Chromium Carbide are used to control grain size and add resistance to corrosion. As the binder of Tungsten Carbide particles, the Cobalt binder provides the best combination of hardness and strength. A nickel binder provides corrosion resistance and freedom from magnetism. A variety of grades are available to achieve an optimum combination of properties for maximum life.

Key Properties

  • High hardness: Spanning the range from hardened steel to ultra-hard ceramics.
  • Resistance to wear: Some grades can outwear hardened steel by over 100 times.
  • Heat and oxidation resistance: Alloyed grades perform well at temperatures up to 1000ºF in oxidizing atmospheres.
  • Impact resistance: Cemented carbides are surprisingly tough considering their high hardness.
  • High thermal conductivity: Unalloyed grades can remove heat as fast as Beryllium Copper alloys.
  • Resistance to corrosion: Grades with Nickel and Chromium binders are very resistant to acidic solutions

Typical Applications

Tungsten Carbide Grade Selection