Abstract
This specification covers requirements of wrought 35cobalt-35nickel-20chromium-10molybdenum alloy (UNS R30035) in the form of bar and wire, used for the manufacture of surgical implants. This alloy depends on combinations of work-strengthening, and work-strengthening and aging to attain a variety of combinations of strength and ductility. Materials shall be tested and the individual grades shall conform to chemical requirements such as chemical composition and their tolerances, and mechanical properties such as tensile strength, yield strength, elongation, and area reduction.
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 requirements of wrought 35cobalt-35nickel-20chromium-10molybdenum alloy (UNS R30035) in the form of bar and wire, used for the manufacture of surgical implants. This alloy depends on combinations of work-strengthening, and work-strengthening and aging to attain a variety of combinations of strength and ductility.
1.2 The values stated in inch-pound units are to be regarded as the standard. The SI equivalents of the inch-pound units may be approximate.
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
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
E112 Test Methods for Determining Average Grain Size
E354 Test Methods for Chemical Analysis of High-Temperature, Electrical, Magnetic, and Other Similar Iron, Nickel, and Cobalt Alloys
F981 Practice for Assessment of Compatibility of Biomaterials for Surgical Implants with Respect to Effect of Materials on Muscle and Bone
ISO Standards
ISO9001 Quality Management Systems
Aerospace Material Specification
AMS2269 Chemical Check Analysis Limits--Wrought Nickel Alloys and Cobalt Alloys
American Society for Quality Standard
ASQC1 Specification of General Requirements for a Quality Program
Society of Automotive Engineers
SAEJ1086 Practice for Numbering Metals and Alloys (UNS)
Index Terms
cobalt alloys (for surgical implants) cobalt-nickel-chromium-molybdenum alloy; metals (for surgical implants)-cobalt alloys;
ICS Code
ICS Number Code 11.040.40 (Implants for surgery, prothetics and orthotics)
DOI: 10.1520/F0562-07
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