F75 Alloy Artificial Joints

Unrivaled Biocompatibility and Strength in Medical Applications

F75 is a cobalt-based superalloy composed mainly of cobalt (Co), chromium (Cr), and molybdenum (Mo). It conforms to the ASTM F75 specification and is widely used in medical applications, particularly in orthopedic implants and artificial joints. The alloy shows excellent biocompatibility, high mechanical strength, and wear resistance, making it ideal for long-term use in the human body.

Chromium enhances corrosion resistance, while molybdenum boosts fatigue strength and mechanical durability. These properties make F75 the preferred material for dental implants, hip and knee replacements, and orthopedic trauma devices.


Certified Safety, Medical Trust, and Recyclability

F75 alloy has received approval from major regulatory bodies like the U.S. FDA and CE (Conformité Européenne). Its low-to-zero nickel content ensures safety for individuals with nickel allergies. F75 is stable in corrosive environments such as bodily fluids, making it suitable for long-term implantation.

F75 also demonstrates high yield strength, tensile strength, and fatigue resistance, particularly in joints subjected to repeated impact. These mechanical properties increase the longevity of artificial hip and knee joints, reducing revision surgeries.

Moreover, F75 is compatible with surface treatments like PVD coatings, DLC coatings, and nitride modifications. These techniques improve wear resistance, lower the coefficient of friction, and support bone adhesion while minimizing inflammation.


Rising Global Demand and Sustainable Metal Recycling

The demand for F75 alloy is growing in advanced medical markets including the United States, Europe, and Japan. Aging populations, especially in East Asia, are driving increased demand for joint replacement materials.

Despite its high hardness, F75 is machinable and castable. Its low deformation rate during cutting and polishing makes it suitable for precise medical applications. Notably, recycling F75 scraps—such as used artificial joints—via remelting allows high-purity recovery without compromising quality. This contributes to the circular economy and addresses raw material scarcity, a major issue in the rare metal industry.

F75’s properties align well with next-generation medical technologies. It supports integration with biosensors, bioprinting, and antibacterial nanocoatings, making it essential for smart healthcare solutions. As development in hybrid implants accelerates, F75 will likely remain at the core of medical material innovation.

Dong-A Special Metals closely monitors global trends in high-performance medical alloys. As a supplier and recycler of F75 and similar superalloys, we continue to support sustainable and advanced healthcare solutions.




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