UNS #S29108
BioDur® 108 is an essentially nickel-free austenitic stainless alloy that contains a high nitrogen content to maintain its austenitic structure. As a result, BioDur® 108 stainless has improved levels of tensile and fatigue strength, as compared to nickel-containing alloys such as 316L (ASTM F138), 22Cr-13Ni-5Mn (ASTM F1314), and 734 (ASTM F1586). The resistance of BioDur® 108 to pitting and crevice corrosion is superior to 316L and equivalent to 22Cr-13Ni-5Mn and 734. BioDur® 108 is produced by the electro-slag remelting (ESR) process to ensure its microstructural integrity and cleanness. The alloy is non-magnetic and essentially free of ferrite phase.
The chemistry of BioDur® 108 meets the recently implemented EU MDR regulatory labeling threshold of less than 0.10% cobalt by weight. Devices made from this alloy should not need to be labeled as containing a potential CMR (carcinogenic, mutagenic, and reprotoxin) element.
* 0.050 max nickel available upon request.
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