Molybdenum News Center

Cobalt-chromium-molybdenum alloy, is basically divided into two categories: CoCrMo alloy and CoNiCrMo alloys. And CoNiCrMo forged alloy is one of the potential of cobalt-based alloy, originally called MP35N, when subjected to stress, can have a high degree of corrosion resistance in seawater (containing chloride ions), the cold can increase the strength of the alloy, but the cold considerable difficulty, particularly in the manufacture of large devices, such as hip pattern, only the hot forging is more suitable. 

CoNiCrMo forged alloy wear properties and cast CoCrMo alloy similar, with good fatigue resistance and high tensile strength advantages, so it is suitable for applications requiring long life and will not fracture or stress fatigue Department, for example, the hip joints artificial joint implants for the buried deep in the bone marrow of the catheter difficult and expensive operation, the advantage of this is very important. 

 

Modulus of elasticity of cobalt-based alloy does not change with the maximum tensile strength and change its value in the Range 220 至 234 GPa, and higher than other materials such as stainless steel. 

 

CoCrMo alloys are particularly susceptible to hardening effect can not use the same metal as the other manufacturing process, and the need to use vacuum precision casting. Casting mold temperature control of the grain size can be controlled, and the larger the farther away from the carbide and the higher temperature reduces the formation of brittle material coarse grains will reduce the strength, but also precipitated. 

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