ASTM F688-19,Standard Specification for Wrought Cobalt-35Nickel-20Chromium-10Molybdenum Alloy Plate, Sheet, and Foil for Surgical Implants (UNS R30035).
ASTM F688-19 covers the chemical, mechanical, and metallurgical requirements for wrought cobalt-35nickel-20chromium-10molybdenum alloy (UNS R30035) in the form of plate, sheet, and foil to be used in the manufacture of surgical implants.
6. Chemical Requirements
6.1 The heat analysis and product analysis tolerances shall conform to the requirements for chemical composition as specified in Specification F562.
8. Microstructure Requirements
8. I If supplied in the annealed condition, the average grain size shall be predominantly ASTM grain size number four or finer when tested in accordance with Test Methods E112.
8.1.1 It is preferable that samples for grain size determina tion be selected after the final annealing operation and prior to a final cold-working operation or prior to final cold-working and capability-aging operations
8.1. 2 If samples are selected after a final cold-working operation or after final cold-working and capability-aging operations, specimens shall be tested in accordance with Test Methods E112, or as agreed upon between the supplier and purchaser.
11.Certification
11. 1 Certification that the material meets the requirements of this specification shall be provided by the supplier. A report of the test results shall be furnished at the time of shipment .
12. Quality Program Requirements
12. 1 The supplier shall maintain a quality program such as defined in ISO 9001 or similar quality program.
Keyword:cobalt alloys(for surgical implants),cobalt-nickel alloy,metals (for surgical implants).
ASTM F688-19 pdf download
PS:Thank you for your support!
