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Biodur® 22Cr-13Ni-5Mn

UNS #S20910

Biodur® 22CR-13Ni-5Mn (Nitronic 50) is a nitrogen-strengthened austenitic stainless steel that provides very good corrosion resistance in combination with high strength. It has better corrosion resistance than 316 with approximately twice the yield strength. It can be welded, machined and cold worked using the same equipment and methods used for the conventional 300 series stainless steels and remains nonmagnetic after severe cold work.

Type Analysis

  • Carbon (Maximum) 0.06
  • Phosphorus (Maximum) 0.04
  • Silicon (Maximum) 1
  • Nickel (Nominal) 11.50-13.50
  • Manganese (Maximum) 4.00-6.00
  • Sulfur (Maximum) 0.03
  • Chromium (Nominal) 20.50-23.50
  • Cobalt (Nominal) 0.75
  • Molybdenum (Nominal) 1.50-3.00
  • Iron (Nominal) Balance
  • Columbium/Niobium 0.10-0.30
  • Nitrogen (Nominal) 0.20-0.40
  • Vanadium (Nominal) 0.10-0.30

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Applicable Specifications

  • AMS 5764
  • AMS 5861
  • ASTM A240 (Grade XM-19)
  • ASTM A276 (Grade XM-19)
  • ASTM A412 (Grade XM-19)
  • ASTM A479 (Grade XM-19)
  • ASTM A580 (Grade XM-19)
  • ASTM F1314

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