Description of AISI 4340 Alloy Steel Wire
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.
Specification of AISI 4340 Alloy Steel Wire
|
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 Wire
- 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.
