USA UNS S32900
AISI
American Iron and Steel Institute
329
Corresponding Standard ASTM A959-2004
Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
Classification Duplex Stainless Steel
Properties Corrosion Resistance
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo
Minimum Value - - - - - 23 2.5 1
Maximum Value 0.08 0.75 1 0.04 0.03 28 5 2
Approximate Comparison Table Austenitic-Ferritic Stainless Steel
Japan United States International Organization for Standardization European Standard
JIS AISI UNS ISO Numerical Grade Numerical Grade
SUS329J1 329 S32900 X6CrNiMo26-4-2 4480-329-00-U (1.4480)

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