USA UNS S18200
ASTM
Specification or Grade
XM-34
Corresponding Standard ASTM A959-2019
Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
Classification Ferritic Stainless Steel
Properties Corrosion Resistance
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo
Minimum Value - - - - 0.15 17.5 1.5
Maximum Value 0.08 1 2.5 0.04 - 19.5 2.5
• Unless otherwise indicated, a grade designation originally assigned by the American Iron and Steel Institute (AISI).

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