S21904 - ASTM A959-2019

USA UNS	S21904
ASTM Specification or Grade	XM-11
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	N
Minimum Value	-	-	8	-	-	19	5.5	0.15
Maximum Value	0.04	1	10	0.045	0.03	21.5	7.5	0.4

• Unless otherwise indicated, a grade designation originally assigned by the American Iron and Steel Institute (AISI).

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