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
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RGS
Our cobalt-bound (magnetic) hard metal
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NMT
Nickel-bound, anti-magnetic hard metal
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NKT
Nickel-bound, corrosion-resistant hard metal
Hard metal
in comparison
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Diamond (PCD)
The hardest synthetic material; high level of fracture toughness
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Steel
High degree of toughness but low level of hardness
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Ceramic
Outstanding hardness but low level of toughness; low density, lighter than hard metal, heat conductive
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CBN
High degree of hardness, low level of toughness
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Cermet
High degree of hardness but less tough than hard metal
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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.