This specification covers the requirements for two grades of wrought 40cobalt-20chromium-16iron-15nickel- 7molybdenum alloy in the form of wire and strip used for the manufacture of surgical implants. The heat analysis shall conform to the prescribed chemical composition requirements of grade 1 or 2. The tensile strength, hardness, yield strength, elongation, and microstructure shall be tested to meet the requirements specified.

1.1 This specification covers the chemical, mechanical, and metallurgical requirements for two grades of wrought 40cobalt-20chromium-16iron-15nickel-7molybdenum alloy in the form of wire, strip and bar used for the manufacture of surgical implants.

1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.