ASTM F75

This specification covers the requirements for unfinished cobalt-28chromium-6molybdenum (UNS R30075) investment product alloy castings for surgical implant applications, and casting alloys of the same in the form of shot, bar, or ingots to be used in the manufacture of surgical implants. This specification does not apply to completed surgical implants made from castings. Both product castings and casting alloys shall conform to specified chemical composition and mechanical requirements including ultimate tensile strength, yield strength, elongation, and reduction of area. Product castings shall additional undergo liquid penetrant, radiographic, metallographic, and hardness examination.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

1. Scope

1.1 This specification covers the requirements for cobalt-28 chromium-6 molybdenum alloy unfinished investment product castings for surgical implant applications and casting alloy in the form of shot, bar, or ingots to be used in the manufacture of surgical implants. This specification does not apply to completed surgical implants made from castings.

1.2 The values stated in inch-pound units are to be regarded as the standard. The SI equivalents in parentheses are for information only.

2. Referenced Documents

A957 Specification for Investment Castings, Steel and Alloy, Common Requirements, for General Industrial Use
E165 Test Method for Liquid Penetrant Examination
E18 Test Methods for Rockwell Hardness of Metallic Materials
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E3 Guide for Preparation of Metallographic Specimens
E354 Test Methods for Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and Cobalt Alloys
E407 Practice for Microetching Metals and Alloys
E601 Test Method for Measuring Electromotive Force (emf) Stability of Base-Metal Thermoelement Materials with Time in Air
E601 Test Method for Measuring Electromotive Force (emf) Stability of Base-Metal Thermoelement Materials with Time in Air
E8 Test Methods for Tension Testing of Metallic Materials
F629 Practice for Radiography of Cast Metallic Surgical Implants
F981 Practice for Assessment of Compatibility of Biomaterials for Surgical Implants with Respect to Effect of Materials on Muscle and Bone
AMS 2248 Chemical Check Analysis Limits: Corrosion and Heat Resistant Steels and Alloys, Maraging and Other Highly-Alloyed Steels, and Iron Alloys
AMS 2269 Chemical Check Analysis Limits: Nickel, Nickel Alloys and Cobalt Alloys
ASQ Cl Specification of General Requirements for a Quality Program
ISO5832-4 Implants for Surgery-Metallic Materials-Part 4: Cobalt-Chromium-Molybdenum Casting Alloy
ISO6892 Metallic Materials Tensile Testing at Ambient Temperature
ISO9001 Quality Management Systems-Requirements

Index Terms

castings-surgical; cobalt alloys (for surgical implants); cobalt-chromium-molybdenum-metals (for surgical implants); cobalt alloys; ICS Number Code 11.040.40

Citing ASTM Standards

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