USA UNS S31727
Corresponding Standard ASTM A959-2019
Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
Classification Austenitic Stainless Steel
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo N
Minimum Value - - - - - 17.5 14.5 2.8 3.8 0.15
Maximum Value 0.03 1 1 0.03 0.03 19 16.5 4 4.5 0.21
• Unless otherwise indicated, a grade designation originally assigned by the American Iron and Steel Institute (AISI).

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