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Cobalt Base Alloy

What is Medical Cobalt base alloy ?

Medical cobalt base alloy is a high-temperature alloy that was originally used in aerospace materials. Due to its good resistance to wear, corrosion and high strength,. Forged cobalt-chromium-molybdenum alloys are sometimes used in the manufacture of articulating surfaces and load-bearing components of artificial joints, articulating ball joints, femoral stems, cemented stems, and artificial spinal connecting rods.

Strengths, Weaknesses, and Trends

  • Advantages

    Cobalt-based alloys offer 40 times better corrosion resistance than stainless steel.

    They have the best wear resistance among medical metals.

    Minimal tissue reaction makes them ideal for long-term implants.

    Excellent mechanics and biocompatibility allow complex precision casting.

  • Disadvantages

    Contains harmful ions like Co, Cr, and Ni.

    High elasticity modulus causes stress shielding.

  • Tendencies

    Nickel and Cobalt Free Alloys

    Alternative Products