A268 29-4 S44700 - ASTM A268/A268M-2020

Grade	A268 29-4
USA UNS	S44700
Corresponding Standard	ASTM A268/A268M-2020 Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service
Classification	Ferritic Stainless Steel

A268 29-4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	N	More
Minimum Value	-	-	-	-	-	28	-	-	3.5	-	C+N≤0.025
Maximum Value	0.01	0.2	0.3	0.025	0.02	30	0.15	0.15	4.2	0.02	C+N≤0.025

A268 29-4 Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
≥550	≥415	≥20	≤207

Approximate Comparison Table Ferritic Stainless Steel

China	Japan	United States	International Organization for Standardization		European Standard
ISC	JIS	UNS	ISO	Numerical Grade	Numerical Grade
S13091	SUS447J1	S44700	X1CrMo30-2	4135-447-92-C	(1.4135)

A26829-4 Corresponding Standards(Same grade name, different standards)

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