Biodur® 108

UNS #S29108

Biodur® 108 is an essentially nickel-free austenitic stainless alloy with a high nitrogen content to maintain its austenitic structure. As a result, it has superior tensile and fatigue strength 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 alloy and equivalent to the 22Cr-13Ni-5Mn alloy and 734 alloys. It is produced by the Electro-Slag Remelting (ESR) process to assure its microstructural integrity and cleanness, is non-magnetic, and essentially free of ferrite phase.

Type Analysis

  • Carbon (Maximum) 0.08
  • Phosphorus (Maximum) 0.03
  • Silicon (Maximum) 0.75
  • Nickel (Nominal) 0.1
  • Manganese (Maximum) 21.00-24.00
  • Sulfur (Maximum) 0.01
  • Chromium (Nominal) 19.00-23.00
  • Cobalt (Nominal) 0.1
  • Molybdenum (Nominal) 0.50-1.50
  • Iron (Nominal) Balance
  • Copper (Nominal) 0.25
  • Nitrogen (Nominal) 0.9

Applicable Specifications

  • AMS 2630
  • ASTM F2229

Bar

Rounds

Billet

Strip

Wire

Rod

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