A249 TP304H S30409 - ASTM A249/A249M-2018

Grade	A249 TP304H
USA UNS	S30409
Corresponding Standard	ASTM A249/A249M-2018 Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes
Classification	Austenitic Stainless Steel

A249 TP304H Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni
Minimum Value	0.04	-	-	-	-	18	8
Maximum Value	0.1	1	2	0.045	0.03	20	11

A249 TP304H Mechanical Properties

Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW
Solutioning Temperature 1040℃	≥515	≥205	≥35	HRB ≤90

1 Approximate Comparison Table Austenitic Stainless Steel

China		Japan	United States		International Organization for Standardization	Germany		European Standard
GB	ISC	JIS	AISI	UNS	ISO	DIN EN/DIN	W-Nr.	EN	Numerical Grade
07Cr19Ni10	S30409	SUS 304H	304H	S30409	X6CrNi 18-10 X7CrNi 18-9	X6CrNi18-10	1.4948	X6CrNi18-10	1.4948

2 Approximate Comparison Table

Japan	United States		International Organization for Standardization	France	European Standard		Russia
JIS	ASTM	UNS	ISO	NF EN/NF	EN	Numerical Grade	GOST
SUS304H	304H	S30409	X7CrNi18-9	Z6CN18-09	X6CrNi18-10	1.4948	08KH18N10

A249TP304H Corresponding Standards(Same grade name, different standards)

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