Assessment of wrought ASTM F1058 cobalt alloy properties for permanent surgical implants

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Abstract
The behavior of the ASTM F1058 wrought cobalt‐chromium‐nickel‐molybdenum‐iron alloy (commonly referred to as Elgiloy® or Phynox) is evaluated in terms of mechanical properties, magnetic resonance imaging, corrosion resistance, and biocompatibility. The data found in the literature, the experimental corrosion and biocompatibility results presented in this article, and its long track record as an implant material demonstrate that the cobalt superalloy is an appropriate material for permanent surgical implants that require high yield strength and fatigue resistance combined with high elastic modulus, and that it can be safely imaged with magnetic resonance. © 1997 John Wiley & Sons, Inc. J Biomed Mater Res (Appl Biomater) 38: 229–234, 1997