ASTM F799-11 - 1.6.2011
 
1. Scope

1.1 This specification covers requirements of cobalt-28chromium-6molybdenum alloy (UNS R31537, R31538, R31539) high-strength forgings for the manufacture of surgical implants. The properties specified in this document specifically apply to finished or semifinished parts that receive no subsequent thermomechanical processing.

1.2 Wrought material to be used as forging stock in the manufacture of forgings conforming to this specification, typically hot worked and unannealed with a surface finish suitable for forging, shall be fabricated and supplied in accordance with F1537.

1.3 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.

 
2. Referenced Documents

E165-09

Standard Practice for Liquid Penetrant Examination for General Industry

F601-23

Standard Practice for Fluorescent Penetrant Inspection of Metallic Surgical Implants

F981-23

Standard Practice for Assessment of Muscle and Bone Tissue Responses to Long-Term Implantable Materials Used in Medical Devices

E18-22

Standard Test Methods for Rockwell Hardness of Metallic Materials

E29-22

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

E112-13(2021)

Standard Test Methods for Determining Average Grain Size

F75-23

Standard Specification for Cobalt-28 Chromium-6 Molybdenum Alloy Castings and Casting Alloy for Surgical Implants (UNS R30075)

F1537-20

Standard Specification for Wrought Cobalt-28Chromium-6Molybdenum Alloys for Surgical Implants (UNS R31537, UNS R31538, and UNS R31539)

ASTM SI 10

American National Standard for Use of the International System of Units (SI): The Modern Metric System

E8-04

Standard Test Methods for Tension Testing of Metallic Materials

E930-18

Standard Test Methods for Estimating the Largest Grain Observed in a Metallographic Section (ALA Grain Size)