25CrMo4 - ISO 683-18-2014

Grade	25CrMo4
Corresponding Standard	ISO 683-18-2014 Heat-treatable Steels, Alloy Steels and Free-Cutting Steels - Part 18: Bright Steel Products
Classification	Alloy Steel

25CrMo4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Cu	Mo
Minimum Value	0.22	0.1	0.6	-	-	0.9	-	0.15
Maximum Value	0.29	0.4	0.9	0.025	0.035	1.2	0.4	0.3

25CrMo4 Mechanical Properties

	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW	Impact Energy Absorption KV2 J
16＜t≤100	S.annealed +peeled (+A +SH)				≤212
5≤t≤10	S.annealed +Cold drawn (+A +C)				≤270
10＜t≤16	S.annealed +Cold drawn (+A +C)				≤260
16＜t≤40	S.annealed +Cold drawn (+A +C)				≤255
40＜t≤100	S.annealed +Cold drawn (+A +C)				≤250
16＜t≤40	Quenched and tempered and peeled (+QT+SH)	800~950	≥600	≥14		≥50
40＜t≤100	Quenched and tempered and peeled (+QT+SH)	700~850	≥450	≥15		≥50
5≤t≤16	Quenched and tempered + Cold drawn (+QT +C)	900~1100	≥700	≥9
16＜t≤40	Quenched and tempered + Cold drawn (+QT +C)	800~1000	≥600	≥10
40＜t≤63	Quenched and tempered + Cold drawn (+QT +C)	700~900	≥520	≥11
63＜t≤100	Quenched and tempered + Cold drawn (+QT +C)	700~900	≥450	≥12

1 Approximate Comparison Table Alloy Steel for Quenching and Tempering

China		Japan	International Organization for Standardization	European Standard
GB	ISC	JIS	ISO	EN	Numerical Grade
30CrMo	A30302	SCM425 SCM425H	25CrMo4	25CrMo4	1.7218

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	SAE	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST	SS	BS EN/BS
30CrMo	SCM420 SCM430	4130	25CrMo4	25CrMo4	25CD4	25CrMo4	1.7218	20KHM 30KHM 30KHMA	2225	708A25 708M25 CFS10

3 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

Japan	International Organization for Standardization	European Standard
JIS	ISO	EN	Numerical Grade
SCM425 SCM425H	25CrMo4	25CrMo4	1.7218

4 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

China	Japan	International Organization for Standardization	European Standard
GB	JIS	ISO	EN
ML25CrMo	SCM425	25CrMo4	25CrMo4

25CrMo4 Corresponding Standards(Same grade name, different standards)

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