Grade A182 F22 Class 1
USA UNS K21590
ASTM
Specification or Grade
F 22
Corresponding Standard ASTM A182/A182M-2018
Standard Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service
Classification Alloy Steel
Properties Corrosion Resistance
A182 F22 Class 1 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo
Minimum Value 0.05 - 0.3 - - 2 0.87
Maximum Value 0.15 0.5 0.6 0.04 0.04 2.5 1.13

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