Product Description

4140 Steel Grade Equivalent Chart

Country	USA	Germany/UK/France	JAPAN
Standard	ASTM A29 / A29M-05	EN 10083/3-2006	JIS G4053-2008
Grades	4140	42CrMo4(1.7225)	SCM440

 

4140 Steel Chemical Composition

Grade	C (%)	Si (%)	Mn(%)	P (%)	S (%)	Cr (%)	Mo (%)
4140	0.38-0.45	0.17-0.37	0.50-0.80	≤0.035	≤0.035	0.90-1.20	0.15-0.25

 

4140 Steel Physical Properties

Properties	Metric	Imperial
Density	7.85 g/cm³	0.284 lb/in³
Melting point	1416°C	2580°F

 

1.7225 Steel Mechanical Properties

Mechanical Properties	Metric	Imperial
Tensile strength	655 MPa	95000 psi
Yield strength	415 MPa	60200 psi
Bulk modulus(typical for steel)	140 GPa	20300 ksi
Shear modulus(typical for steel)	80 GPa	11600 ksi
Elastic modulus	190-210 GPa	27557-30458 ksi
Poisson’s ratio	0.27-0.30	0.27-0.30
Elongation at break(in 50 mm)	25.70%	25.70%
Hardness, Brinell	197	197
Hardness, Knoop(converted from Brinell hardness)	219	219
Hardness, Rockwell B(converted from Brinell hardness)	92	92
Hardness, Rockwell C(converted from Brinell hardness. Value below normal HRC range, for comparison purposes only)	13	13
Hardness, Vickers(converted from Brinell hardness)	207	207
Machinability(based on AISI 1212 as 100 machinability)	65	65

 

4140 Steel Quality Certificate & SGS Report

 

About Songshun Steel

Dongguan Songshun Mould Steel co., LTD  which is an industrial and trading company with 3500-7000ts hydraulic forging machine. We provide a great variety of steels, competitive price with good quality and keep the large stock are over 20000 tons.

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E-mail:jacklu@songshunsteel.com
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