ASTM F1058
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ASTM F1058 is a cobalt-chromium-nickel-molybdenum alloy produced using a vacuum induction melting process followed by electroslag remelting (VIM-ESR). In accordance with ASTM "F" spec, it has been shown to be sufficiently biocompatible for surgical implants.

This alloy has nonmagnetic properties, making it ideal for situations that will later be subject to magnetic resonance imaging.

Among it's uses in the medical industry are:

  • Orthopedic wires and cable
  • Pacemaker lead conductors
  • Orthodontics
  • Stents
  • Surgical clips

ASTM F1058 is also referred to as:

  • UNS R30003
  • Phynox®
  • Elgiloy®
  • Conichrome®

Chemical Data, Mechanical Data and Specifications for ASTM F1058 Cobalt Chrome.

Chemical

Chemical Range for ASTM F1058 Grade 1 (UNS R30003)
Element Minimum Maximum
Beryllium -- 0.10
Carbon -- 0.15
Chromium 19.0 21.0
Cobalt 39.0 41.0
Iron Balance --
Manganese 1.50 2.50
Molybdenum 6.00 8.00
Nickel 14.00 16.00
Phosphorus -- 0.015
Silicon -- 1.20
Sulphur -- 0.015
Chemical Range for ASTM F1058 Grade 2 (UNS R30008)
Element Minimum Maximum
Beryllium -- 0.0001
Carbon -- 0.15
Chromium 18.5 21.5
Cobalt 39.0 42.0
Iron Balance --
Manganese 1.00 2.00
Nickel 15.00 18.00
Phosphorus -- 0.015
Silicon -- 1.20
Sulphur -- 0.015

Mechanical

Typical Mechanical Properties for L-605®
Form Tensile Strength Yield Strength Elongation at Break
Annealed 123 ksi min 62.25 ksi min 65% min

Specs

Applicable Specifications
Rod, Strip ASTM F 1058
Designation CoCr20Ni15Mo7
UNS R30003 (Elgiloy, Phynox, Conichrome), R30008

Elgiloy, Phynox, and Conichrome are registered trademarks of their respective owners.