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What is hard metal?


Hard metal is a composite material that is usually magnetic. It is harder than pure metals, alloys and hardened steel. Tungsten carbide gives hard metal its hardness and wear resistance, while the bonding metals cobalt and nickel are responsible for its toughness. Nickel makes hard metal corrosion-resistant and, with the right manufacturing process, also anti-magnetic if desired. We normally use cobalt as the binding metal.

We manufacture our own hard metal in Gränichen.

Standard types

  • RGS

    Our cobalt-bound (magnetic) hard metal

  • NMT

    Nickel-bound, anti-magnetic hard metal

  • NKT

    Nickel-bound, corrosion-resistant hard metal

Examples of hard metal products

Hard metal
in comparison

  • Diamond (PCD)

    The hardest synthetic material; high level of fracture toughness

  • Steel

    High degree of toughness but low level of hardness

  • Ceramic

    Outstanding hardness but low level of toughness; low density, lighter than hard metal, heat conductive

  • CBN

    High degree of hardness, low level of toughness

  • Cermet

    High degree of hardness but less tough than hard metal

  • Hard metal

    Flexible in its composition and versatile in its use; either with higher toughness or higher wear resistance


Questions?

Do you have any other specific requirements? You can rely on our decades of specialisation for the optimum choice of material.