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

Applications

implantable orthopedic applications such as bone plates, bone screws, spinal fixation components, hip and knee components, hypoallergenic jewelry, orthodonic appliances, and other medical components and instruments

Applicable Specifications

  • AMS 2630
  • ASTM F2229

Bar

Billet

Rod

Rounds

Strip

Wire

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