The earliest cobalt alloy as biomedical material developed is the CO-Cr-Mo alloy with austenitic structure. The alloy contains approximately 27-30% chromium, 5-7% molybdenum, and small amounts of other elements such as nickel, iron, and carbon. These elements contribute to the alloy's mechanical properties and resistance to wear and tear.
With its excellent mechanical properties and good biocompatibility, especially excellent corrosion resistance, wear resistance and casting properties are widely used. Its corrosion resistance is 10 times stronger than that of Stainless Steel, and its hardness is 1/3 higher than that of stainless steel
Therefore, it is suitable for the production of artificial joints, denture and other medical devices with high abrasion. 50s began to be used in the manufacture of artificial joints.
Cocr F75 as implantable grade casting is commonly used in biomedical applications, particularly in dental and orthopedic implants.
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