Carbide

Carbide is a composite material made up of tungsten carbide and cobalt.

This hard metal materials is also known as WIDIA steel. The WIDIA designation is the brand name introduced by the Krupp company in 1927. WIDIA stands for "as hard as diamond". However, the term steel is misleading. Carbide is not a steel alloy but a composite material made of the hard material tungsten carbide (WC) and the binding metal cobalt (Co), which is produced using powder metallurgy.

 

Grades

 

Because carbide is a composite material made up of several components, the possibilities of producing different carbides are almost unmanageable.

You can vary the proportions of the basic components tungsten carbide and cobalt, you can vary the initial grain sizes of the powder used, and you can work with different additives to limit the grain growth and to improve the service life.

AFC Hartmetall only produces ultra-fine grain grades with a cobalt content of 6-13%. All of these are highly wear-resistant grades from ISO machining groups K10 - K50.

 

Manufacturing

 

Carbides are manufactured using powder metallurgy processes. Powder metallurgy turns into mixed powders, and the mixture extrudes or compacts into a die. The resulting shapes are then sintered or heated in a controlled atmosphere furnace to metallurgically bond the particles.