USA UNS S32101
ASTM
Specification or Grade
F 69
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 Duplex Stainless Steel
Properties Corrosion Resistance
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo N
Minimum Value - - 4 - - 21 1.35 0.1 0.1 0.2
Maximum Value 0.04 1 6 0.04 0.03 22 1.7 0.8 0.8 0.25
1 Approximate Comparison Table Austenitic Stainless Steel
United States International Organization for Standardization European Standard
UNS ISO Numerical Grade EN Numerical Grade
S32101 X2CrMnNiN21-5-1 4162-321-01-E X2CrMnNiN21-5-1 1.4162
2 Approximate Comparison Table Austenitic-Ferritic Stainless Steel
China United States International Organization for Standardization United Kingdom
GB ISC UNS ISO Numerical Grade BS EN/BS
03Cr21Mn5Ni1MoCuN
(GB/T 39033)
S21014 S32101
(ASTM A959-16)
X2CrMnNiN21-5-1
(ISO 15510:2014)
4162-321-01-E X2CrMnNiN21-5-1/1.4162
(BS EN 10083:2014)

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