A803 TP409 S40900 - ASTM A803/A803M-2016(R2021)

Grade	A803 TP409
USA UNS	S40900
Corresponding Standard	ASTM A803/A803M-2016(R2021) Standard Specification for Seamless and Welded Ferritic Stainless Steel Feedwater Heater Tubes
Classification	Ferritic Stainless Steel

A803 TP409 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	More
Minimum Value	-	-	-	-	-	10.5	-	6×C≤ Ti ≤0.75
Maximum Value	0.08	1	1	0.045	0.03	11.7	0.5	6×C≤ Ti ≤0.75

A803 TP409 Mechanical Properties

Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
≥380	≥205	≥20	≤207

1 Approximate Comparison Table Heat-Resistant Stainless Steel

China		Japan	United States		International Organization for Standardization	Germany		France	United Kingdom
GB	ISC	JIS	ASTM	UNS	ISO	DIN EN/DIN	W-Nr.	NF EN/NF	BS EN/BS
06Cr11Ti (0Cr11Ti)	S11168	SUH 409	409	S40900	X6CrTi 12	X5CrTi 12	1.4512	Z6CT 12	409S19

2 Approximate Comparison Table Ferritic Stainless Steel

China		Japan	United States		International Organization for Standardization		France	European Standard		United Kingdom
GB	ISC	JIS	ASTM	UNS	ISO	Numerical Grade	NF EN/NF	EN	Numerical Grade	BS EN/BS
022Cr11Ti	S11163	SUH409L SUS409L	409	S40900	X2CrTi12	4512-409-10-I	Z3CT12	X2CrTi12	1.4512	409S

3 Approximate Comparison Table Ferritic Stainless Steel

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