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Alloy 22

UNS #N06022

Alloy 22 is a nickel-chromium-molybdenum-tungsten alloy with superior corrosion resistance compared to other alloys in the same family, such as C-276 and 625. Commonly used in the semiconductor industry as an upgrade to legacy 316L stainless steel, Alloy 22 displays exceptional resistance to a wide range of corrosive environments.

Type Analysis

  • Carbon (Maximum) 0.015
  • Phosphorus (Maximum) 0.02
  • Silicon (Maximum) 0.08
  • Nickel (Nominal) Balance
  • Tungsten (Nominal) 2.5-3.5
  • Manganese (Maximum) 0.50
  • Sulfur (Maximum) 0.02
  • Chromium (Nominal) 20.0-22.5
  • Molybdenum (Nominal) 12.5-14.5
  • Iron (Nominal) 2.0-6.0
  • Vanadium (Maximum) 0.35
  • Cobalt (Maximum) 2.5

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Applicable Specifications

  • ASTM B574

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