FE2181 AISI 4340 Alloy Steel Tube

Catalog No.	FE2181
Size	Customized
Material	AISI 4340 Alloy Steel
Shape	Tube
M.O.Q	$1000-$5000
Other Trade Name	UNS G 43400
Density	7.85 g/cm3

AISI 4340 Alloy Steel is a versatile, heat-treatable, and high-strength steel known for its exceptional toughness, wear resistance, and suitability for a variety of applications in aerospace, automotive, and industrial engineering. As a leading global supplier of aluminum alloys, Stanford Advanced Materials (SAM) provides consistently high-quality AISI 4340 Alloy Steel products that are easily available, and we're capable of supplying custom materials per any specs/drawings you provide us with.

Other forms: Wire, Round Bar, Flat Bar.

INQUIRY

Description

Specification

Description of AISI 4340 Alloy Steel Tube

AISI 4340 Alloy Steel is a high-strength, low-alloy steel known for its excellent toughness, wear resistance, and fatigue strength. It is commonly used in aerospace, automotive, and heavy machinery applications where high performance and durability are required. This alloy is particularly valued for its ability to be heat-treated to achieve a wide range of mechanical properties, making it suitable for critical components like shafts, gears, and structural parts.

4340-alloy-tube

Specification of AISI 4340 Alloy Steel Tube

Element	Content (%)
Iron, Fe	95.195 - 96.33
Nickel, Ni	1.65 - 2.00
Chromium, Cr	0.700 - 0.900
Manganese, Mn	0.600 - 0.800
Carbon, C	0.370 - 0.430
Molybdenum, Mo	0.200 - 0.300
Silicon, Si	0.150 - 0.300
Sulfur, S	0.0400
Phosphorous, P	0.0350

Hardness Brinell	293 HB
Tensile strength	1014 MPa
Elongation at break	19 %
Reduction of area	60.40 %
Modulus of elasticity	200 GPa
Bulk modulus	159 GPa
Poissons ratio	29 %
Machinability	50 %
Shear modulus	78 Gpa
Density	7.85 g/cm3
Melting point	1427 °C

Specifications: ASTM A 829 / A6 SAE J404, AMS 2252/ 2301/6359 SAE J404

Applications of AISI 4340 Alloy Steel Tube

Aircraft Landing Gear Components:

Utilized in the construction of various parts of aircraft landing gear, including struts and connecting rods, due to its high strength and durability.

Automotive Transmission Components:

Found in automotive systems, particularly in the manufacturing of transmission components such as gears and shafts, where its robust properties contribute to longevity and performance.

Forged Hydraulic Equipment:

Applied in the forging of hydraulic components, taking advantage of its excellent strength and impact resistance for reliable operation under pressure.

High-Strength Forged Steel Crankshafts:

Employed in the production of crankshafts for engines where high strength and fatigue resistance are essential for efficient and durable performance.

Power Transmission Gears and Shafts:

Used in the fabrication of gears and shafts for power transmission systems, offering wear resistance and toughness in demanding industrial applications.

Packaging:

Our AISI 4340 Alloy Steel is carefully handled during storage and transportation to preserve the quality of our product in its original condition.

FAQs

Is AISI 4340 Alloy Steel corrosion-resistant?

While AISI 4340 has good corrosion resistance in mild environments, it is not highly resistant to corrosion in more aggressive conditions, so it may require surface coatings or treatments for enhanced protection.

How should AISI 4340 Alloy Steel be welded?

AISI 4340 can be welded using standard methods, such as TIG or MIG welding, but preheating and post-weld heat treatment are recommended to prevent cracking and maintain its mechanical properties.

Is AISI 4340 Alloy Steel machinable?

Yes, AISI 4340 is machinable, though it may require specialized tools and techniques, especially when in hardened or heat-treated conditions.