10CrMo9-10 1.7380 - EN 10273-2000

Grade	10CrMo9-10
European Standard Steel Grade	1.7380
Corresponding Standard	EN 10273-2000 Hot rolled weldable steel bars for pressure purposes with specified elevated temperature properties
Classification	Alloy Steel

10CrMo9-10 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Cu	Mo
Minimum Value	0.08	-	0.4	-	-	2	-	0.9
Maximum Value	0.14	0.5	0.8	0.03	0.025	2.5	0.3	1.1

• The Al content of the cast shall be determined and given in the inspection document.

10CrMo9-10 Mechanical Properties

diameter or thickness d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %
d≤16	+NT	480~630	ReH: ≥310	≥18
16＜d≤40	+NT	480~630	ReH: ≥300	≥18
40＜d≤60	+NT	480~630	ReH: ≥290	≥18
60＜d≤100	+NT or +QA or +QL	470~620	ReH: ≥270	≥17
100＜d≤150	+NT or +QA or +QL	460~610	ReH: ≥250	≥17

① +N: normalized (including normalized rolled)；+QT: quenched and tempered；+NT: normalized and tempered；+QA: air quenched and tempered；+QL: liquid quenched and tempered
② Mechanical properties for diameters or thickness ＞150mm may be agreed.
③ If the up yield strength (ReH) is not pronounced, this shall be replaced by determination of the 0.2% proof strength (Rp0.2). In this case, 10 N/mm2 lower minimum values apply for Rp0.2.

1 Approximate Comparison Table Pressure-Bearing Flat Steel

International Organization for Standardization	European Standard
ISO	EN	Numerical Grade
10CrMo 9-10	10CrMo 9-10	1.7380

2 Approximate Comparison Table Structural Alloy Steel

China	Japan	United States	International Organization for Standardization	Germany	France	European Standard		Russia	Sweden	United Kingdom
GB	JIS	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST	SS	BS EN/BS
12CrMo	SCMV4	A387Gr.22 Gr.P22	F34 P34 TS34	10CrMo9-10	10CD9-10 12CD9-10	10CrMo9-10	1.7380	10KH2M	2218	622 622Gr.31

3 Approximate Comparison Table Seamless Steel Tubes and Pipes for High Pressure Boiler

China		United States	European Standard
GB	ISC	ASTM/AISI	EN
12Cr2MoG	A30128	SA-213 T22 SA-335 P22	10CrMo9-10

10CrMo9-10 Corresponding Standards(Same grade name, different standards)

1	EN 10028-2-2009
	10CrMo9-10 1.7380
2	EN 10216-2-2007
	10CrMo9-10 1.7380
3	EN 10273-2000
	10CrMo9-10 1.7380
4	ISO 9328-2-2018
	10CrMo 9-10
5	EN 10028-2-2017
	10CrMo9-10 1.7380
6	NF EN 10216-2-2007
	10CrMo9-10 1.7380
7	NF EN 10253-2-2007
	10CrMo9-10 1.7380
8	EN 10216-2-2024
	10CrMo9-10 1.7380

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