SS10436 AISI 4340 Alloy Steel Bar UNS G43406

AISI 4340 Alloy Steel Bar UNS G43406 Description

AISI 4340 Alloy Steel Bar UNS G43406 is a high-performance alloy steel characterised by a balanced chemical composition typically including approximately 0.40% C, 1.80% Ni, 0.80% Cr, and 0.25% Mo. Its bar form and customisable dimensions allow integration into systems requiring precise mechanical performance. The alloy's predictable heat-treatment response and strong impact resistance make it suitable for precision-engineered components in high-stress industrial applications.

AISI 4340 Alloy Steel Bar UNS G43406 Characteristics

*The above product information is based on theoretical data and is for reference only. Actual specifications may vary.

AISI 4340 Alloy Steel Bar UNS G43406 Applications

1.       Automotive Components
   - Used as crankshafts in drivetrains to achieve high fatigue resistance by utilising its well-controlled alloy composition.

2.       Industrial Machinery
   - Applied as machine tool components in heavy equipment to achieve improved performance under cyclic loading by utilising its thermal processing attributes.

3.       Construction Equipment
   - Serves as reinforcing elements in load-bearing structures to achieve optimal stress distribution by utilising its predictable mechanical behaviour.

AISI 4340 Alloy Steel Bar UNS G43406 Packing

AISI 4340 Alloy Steel Bar UNS G43406 is packaged in sealed, corrosion-resistant containers to prevent contamination and exposure. The bars are wrapped in inert protective material to maintain surface integrity during transit and storage. They are stored under dry, temperature-controlled conditions to preserve mechanical properties. Bespoke packaging options, including labelled crates and size-specific pouches, are available upon request.

Frequently Asked Questions

Q1: How does the controlled alloy composition affect heat-treatment processes?
A1: The controlled alloy composition of AISI 4340 allows predictable heat-treatment behaviour, enabling precise adjustments in hardness and ductility. This predictable behaviour is essential for tailoring properties to specific high-stress operational requirements.

Q2: What machining considerations are recommended for UNS G43406?
A2: UNS G43406 requires adherence to machining parameters typical for alloy steels. Effective coolant application and proper tool selection are necessary to manage thermal load and minimise wear during cutting operations.

Q3: How is dimensional accuracy maintained during customisation?
A3: Dimensional accuracy is maintained through strict process controls and validated machining tolerances. Regular inspection using calibrated metrology tools ensures that customised dimensions consistently meet the design specifications.

Additional Information

Alloy steels like AISI 4340 play a critical role in applications requiring high strength and toughness. The integration of precise alloying elements and controlled thermal treatments enables the material to achieve a balanced combination of hardness and ductility. Understanding these metallurgical principles is essential for optimising performance in high-stress environments.

In recent years, advancements in metallurgical characterisation techniques—such as scanning electron microscopy and X-ray diffraction—have improved insights into phase transformations and grain structure. These insights contribute to enhanced processing methods, ultimately broadening the utility of alloy steels in industrial and structural applications.