ASTM F799 | Standard Specification for Cobalt-28 Chromium-6 Molybdenum Alloy Forgings for Surgical Implants (UNS R31537, R31538, R31539)

ASTM F799 Scope: This specification covers the material requirements for low-carbon (UNS R31537), high-carbon (UNS R31538), and dispersion-strengthened (UNS R31539) cobalt-28chromium-6molybdenum alloy high-strength forgings used for the manufacture of surgical implants. The properties specified here specifically apply to finished or semifinished parts that receive no subsequent thermomechanical processing. The materials shall be in the form of bars, rods, or wires suitable for forging by hammering, pressing, rolling, extruding, or upsetting. The forgings shall adhere to chemical composition, ultimate tensile strength, yield strength, elongation, reduction of area, and hardness requirements.

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