FE2186 AISI 4140 Alloy Steel Square Bar

Catalog No.	FE2186
Size	Customized
Material	AISI 4140 Alloy Steel
Shape	Square bar
Other Trade Name	UNS G41400
Density	7.85 g/cm3
Minimum Order Quantity (MOQ)	$1000-$5000

AISI 4140 Alloy Steel is widely used chromium-molybdenum alloy steel known for its exceptional strength, toughness, and suitability for various applications in industries such as automotive, aerospace, and oil and gas. Stanford Advanced Materials (SAM) has extensive experience in manufacturing and supplying AISI 4140 Alloy Steel of the highest, most durable quality at competitive prices.
Other forms: Flat Bar, Hex Bar, Round Bar
Related products:316L Stainless Steel Strip, Stainless Steel Fiber, AISI 4150 Alloy Steel Round Bar

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Description

Specification

Description of AISI 4140 Alloy Steel Square Bar

AISI 4140 has high ductility and can be formed using conventional techniques in the annealed condition. Because of its toughness that is superior to any other plain carbon steels, it requires more pressure or force to forming it. AISI 4140 can be used for a wide variety of applications where greater toughness and wear resistance is needed over lower carbon grades. Typical applications include strippers, holder blocks, mold bases, and supporting tools.

Specifications of AISI 4140 Alloy Steel Square Bar

Grade	Cr %	Mo %	C %	Mn %	P % (max)	S % (max)	Si %
4140	0.80-1.10	0.15-0.25	0.38-0.43	0.75-1.00	0.035	0.04	0.15-0.35

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)	0.257	0.257
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. )	13	13
Hardness, Vickers (converted from Brinell hardness)	207	207
Machinability (based on AISI 1212 as 100 machinabilities)	65	65

Applications of AISI 4140 Alloy Steel Square Bar

Typical uses for 4140 include:

Gears:

Utilized in the fabrication of gears for machinery and automotive systems, where 4140 steel's high strength and wear resistance contribute to the durability and efficient operation of the gears.

Crankshafts:

Found in the manufacturing of crankshafts for engines, particularly in the automotive and aerospace industries, taking advantage of 4140 steel's robust properties for reliable and high-performance engine operation.

Suspension Systems:

Applied in the production of components for suspension systems in vehicles, providing the necessary strength and toughness to withstand dynamic loads and ensure stability.

Bulldozer Blades:

Used for constructing bulldozer blades due to its excellent combination of hardness and toughness, making the blades resistant to wear and impact during heavy-duty earthmoving applications.

Oil and Gas Equipment:

Employed in the manufacturing of components for oil and gas exploration and extraction equipment, where the steel's strength and resistance to harsh environmental conditions are crucial for reliable performance.

Packaging:

Our AISI 4140 Alloy Steel is carefully handled during storage and transportation to preserve the quality of our product in its original condition.

FAQs

What are the key properties of AISI 4140 Alloy Steel?

AISI 4140 offers excellent fatigue resistance, good machinability, high tensile strength, and good resistance to wear and abrasion, especially after heat treatment.

Can AISI 4140 Alloy Steel be heat treated?

Yes, AISI 4140 is heat-treatable and can achieve a range of mechanical properties, such as high strength and hardness, through processes like quenching, tempering, and normalizing.

Is AISI 4140 Alloy Steel corrosion-resistant?

While AISI 4140 has moderate corrosion resistance, it is generally used in conditions where additional protection like plating or coating is required, especially in harsh environments.

How should AISI 4140 Alloy Steel be welded?

AISI 4140 can be welded using standard welding techniques (TIG, MIG, etc.), but preheating and post-weld heat treatment are recommended to minimize the risk of cracking and to maintain its mechanical properties.