409Nb S40940 - ASTM A959-2019

Grade	409Nb
USA UNS	S40940
Corresponding Standard	ASTM A959-2019 Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
Classification	Ferritic Stainless Steel
Properties	Corrosion Resistance

409Nb Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	More
Minimum Value	-	-	-	-	-	10.5	-	Nb：10C~0.75
Maximum Value	0.06	1	1	0.045	0.04	11.7	0.5	Nb：10C~0.75

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

Approximate Comparison Table Ferritic Heat-Resistant Steel

409Nb Corresponding Standards(Same grade name, different standards)

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!