Generally speaking, tungsten steel is smelted by adding tungsten raw materials to molten steel using a steelmaking process. It is also called high-speed steel or tool steel. Its tungsten content is generally 15-25%. In addition to the production of high-speed steel by smelting methods, there is also powder metallurgy high-speed steel, which avoids the reduction of mechanical properties and heat treatment deformation caused by carbide segregation caused by smelting production.
Cemented carbide is made by sintering tungsten carbide as the main body and cobalt or other bonding metals using a powder metallurgy process. Its tungsten content is generally above 80%.
Simply put, all alloys with a hardness exceeding HRC65 can be called cemented carbide, so tungsten steel belongs to cemented carbide; but strictly speaking, cemented carbide is not necessarily tungsten steel.
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