USA UNS S21500
Corresponding Standard ASTM A959-2019
Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
Classification Austenitic Stainless Steel
Properties Corrosion Resistance
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo V Nb B
Minimum Value 0.06 0.2 5.5 - - 14 9 0.8 0.15 0.75 0.003
Maximum Value 0.15 1 7 0.045 0.03 16 11 1.2 0.4 1.25 0.009
• Unless otherwise indicated, a grade designation originally assigned by the American Iron and Steel Institute (AISI).
Approximate Comparison Table Austenitic Stainless Steel
United States International Organization for Standardization European Standard
UNS ISO Numerical Grade Numerical Grade
S21500 X10CrNiMoMnNbVB15-10-1 4982-215-00-E 1.4982

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