Name: AISI 4140 Steel Round Bar | ASTM SAE AISI 4140 Steel Round Bar Supplier
Brand: SongShun
Availability: InStock

Product Details

AISI 4140 Steel Round Bar | ASTM SAE AISI 4140 Steel Round Bar Supplier

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

ASTM 4140 Surface Treatment and Heat Treatment

1.Surface Treatment

Plate: Origin Black, Orign cold rolled bright, Machined, Grinded

Bar: Origin Black, Orign cold rolled(drawn) bright, Turned, Peeled, Grinded

2.Heat treatment specification

Heat treatment standard: quenching at 850℃, oil cooling; tempering at 560℃, water cooling, oil cooling;

4140 Steel Applications

It is used to manufacture forgings that require higher strength and larger quenched and tempered sections than 35CrMo steel, such as large gears for locomotive traction, supercharger transmission gears, rear axles, connecting rods and spring clips that are heavily loaded, and can also be used for Drill pipe joints and fishing tools for oil wells below 2000m, and can be used for molds of bending machines, etc.

G41400 Steel Product Photo

Company Introduction

Dongguan Songshun Mould Steel Co., Ltd. is an Indusrtial and trading company with 2 warehouses that manufactures good & high quality kinds of steels starting from 2012. The company provides the customized products and OEM service. What´s more, we keep the mass stock of over 20000 tons. In those years, we offer

a wide range of steels to our customers from all over the world. And we enjoy high praise among them.

Contact us

Feel free to contact us,we are glad to serve for you.

Songshun Always Open the Door for You.

MiKi Zhuo

E-mail:jacklu@songshunsteel.com

Skype/Whatsapp/Wechat:86-18269260283

ADD:No.4 Dongda Street, Shatou, Changan Town, Dongguan City, Guangdong Province, P.R.C China

For more 4140 steel product information, please click this link:

https://songshunsteel.en.china.cn/2194011-4140-Steel-Bar

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