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.

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 chemical, mechanical, and metallurgical 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.

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

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products

E8 Test Methods for Tension Testing of Metallic Materials

E18 Test Methods for Rockwell Hardness of Metallic Materials

E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

E45 Test Methods for Determining the Inclusion Content of Steel

E92 Test Method for Vickers Hardness of Metallic Materials

E112 Test Methods for Determining Average Grain Size

E140 Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, and Scleroscope Hardness

E354 Test Methods for Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and Cobalt Alloys

Aerospace Material Specifications

American Society for Quality Standards

ISO Standards

Keywords

cobalt alloys (for surgical implants); metals for surgical implants; wrought cobalt-chromium-nickel-molybdenum-iron alloy; Chromium surgical implant applications--specifications; Cobalt alloys (for surgical implants)--specifications; Cobalt-chromium surgical implant alloy--specifications; Iron (for surgical implants)--specifications; Molybdenum (surgical implants)--specifications; Nickel surgical implant applications--specifications; Orthopaedic medical devices--specifications (Cr alloy); Surgical implants--specifications; UNS R3003 (cobalt alloy); UNS R3008 (cobalt alloy); Wrought cobalt surgical implant alloys; Wrought surgical implant materials--specifications;

ICS Code

ICS Number Code 11.040.40 (Implants for surgery, prothetics and orthotics)

Citing ASTM Standards

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