S43940 - ASTM A268/A268M-2020

USA UNS	S43940
Corresponding Standard	ASTM A268/A268M-2020 Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
Classification	Ferritic Stainless Steel

Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ti	More
Minimum Value	-	-	-	-	-	17.5	0.1	Nb≥3×C+0.3
Maximum Value	0.03	1	1	0.04	0.015	18.5	0.6	Nb≥3×C+0.3

Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
≥430	≥250	≥18	≤180

Approximate Comparison Table Ferritic Stainless Steel

China		Japan	United States	International Organization for Standardization		European Standard
GB	ISC	JIS	UNS	ISO	Numerical Grade	EN	Numerical Grade
022Cr18NbTi	S11873	SUS430LX	S43940 S43932	X2CrTiNb18	4509-439-40-X	X2CrTiNb18	1.4509

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