AISI 4140 Alloy Steel Round Bar

Short Description:

4140 Alloy Steel Round Bar is an cold drawn annealed steel of relatively high hardenability with its chromium content provides good hardness penetration, and the molybdenum imparts uniformity of hardness and high strength. 4140 Alloy Steel Round responds well to heat-treatment and is relatively easy to machine in the annealed condition. 4140 Alloy Steel Round has good strength and wear resistance, excellent toughness, coupled with good ductility, and the ability to resist stress at elevated temperatures.

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Product Introduction

Specifications: ASTM A331, A108-13, AISI 4140

Applications: shafts, axles, bolts, sprockets, piston rods, rams, etc.

Workability: Moderate to Weld, Cut and Machine.

Mechanical Properties: Brinell = 197-212, Tensile = 95ksi

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SAE 4140 Carbon Steel Round Bar Chemical Composition

C	Si	Mn	P	S	Ni
≤	≤	≤	≤	≤	Ni
–	0.09	0.75-1.05	0.04- 0.09	0.26-0.35
Mo	Al	Cu	Nb	Ti	Ce
–	–	–	–	–	–
N	Co	Pb	B	Other	–
–	–	–	–	–	–

SAE 4140 Carbon Steel Round Bar Physical Properties

Quantity	Value	Unit
Thermal expansion	10 – 10	e-6/K
Thermal conductivity	25 – 25	W/m.K
Specific heat	460 – 460	J/kg.K
Melting temperature	1450 – 1510	°C
Density	7700 – 7700	kg/m3
Resistivity	0.55 – 0.55	Ohm.mm2/m

Why Choose Haihui

The company's annual sales amount is more than 10 million yuan. Through the global sales network, the products sell well in domestic and foreign markets, Haihui Steel has exported steel products to over 30 countries in the world. Our products are marketed widely all over the country and exported to North American, Europe, Middle East, South American, Southeast Asia, Africa, Australia etc and get highly appreciated for our quality and service.

Business Purpose: Quality is superior, Service is supreme, Reputation is first, all kinds of high-quality products recommended to the community, service in all enterprises.

Service Commitment: To provide quality steel pipe and related products, comply with the highest ethical standards, strive to provide unique products and high standards of service.

Company Adhering To: "Customer first, forge ahead with determination" business philosophy, adhere to the "customer first" principle to provide quality services for our customers.

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4140 Alloy Round Steel