50CrMo4 - EN ISO 683-2-2018

Grade	50CrMo4
Corresponding Standard	EN ISO 683-2-2018 Heat-treatable steels,alloy steels and free-cutting steels--Part 2：Alloy steels for quenching and tempering
Classification	Alloy Steel
Properties	Machinability

50CrMo4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Cu	Mo
Minimum Value	0.46	0.1	0.5	-	-	0.9	-	0.15
Maximum Value	0.54	0.4	0.8	0.025	0.035	1.2	0.4	0.3

50CrMo4 Mechanical Properties

condition	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW	Impact Energy Absorption KV2 J
Bar, flat material, forging; d≤16 or t≤8	Quenching and Tempering (+QT)	1100~1300	≥900	≥9	≥40	-	-
Bar, flat material, forging; 16<d≤40 or 8<t≤20	Quenching and Tempering (+QT)	1000~1200	≥780	≥10	≥45	-	≥30
Bar, flat material, forging; 40<d≤100 or 20<t≤60	Quenching and Tempering (+QT)	900~1100	≥700	≥12	≥50	-	≥30
Bars, flat products, forgings; 100<d≤160 or 60<t≤100	Quenching and Tempering (+QT)	850~1000	≥650	≥13	≥50	-	≥30
Bars, Flats, Forgings; 160<d≤250 or 100<t≤160	Quenching and Tempering (+QT)	800~950	≥550	≥13	≥50	-	≥30
Bars, flat products, forgings, semi-finished products, rebar	Soft Annealing (+A)	-	-	-	-	≤248	-

1 Approximate Comparison Table

International Organization for Standardization	European Standard
ISO	EN	Numerical Grade
50CrMo4	50CrMo4	1.7228

2 Approximate Comparison Table structural alloy steel

China	Japan	United States	International Organization for Standardization	Germany		European Standard		United Kingdom
GB	JIS	ASTM	ISO	W-Nr.	L-Nr.	EN	Numerical Grade	BS EN/BS
50CrMo	SCM445	4150	50CrMo4	50CrMo4	1.7228	50CrMo4	1.7228	708M40 708M50

50CrMo4 Corresponding Standards(Same grade name, different standards)

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