SAE 4330 Alloy Steel Round Bar

SAE 4330 round bars offer excellent hardenability and machinability. These round bars conform to SAE AMS 6411 and ASTM A29 standards, ensuring quality and reliability. 

Commonly used in aerospace, automotive, and oil and gas industries, SAE 4330 round bars are heat-treated for optimal performance and utilized in critical components like gears, shafts, and bolts.

Chemical Composition:

Physical Properties:

• Density: Approximately 7.85 g/cm³
• Melting Point: Around 1425°C (2600°F)
• Thermal Conductivity: About 42-45 W/(m·K)
• Specific Heat Capacity: Around 470 J/(kg·K)
• Electrical Conductivity: ~13% IACS (International Annealed Copper Standard)

Mechanical Properties:

• Tensile Strength: Typically 930-1030 MPa
• Yield Strength: Typically 785-885 MPa
• Elongation: Typically 15-20%
• Hardness: Typically 248-302 HB

Manufacturing: SAE 4330 alloy steel round bars are typically manufactured through hot rolling or forging processes followed by heat treatment to achieve the desired properties.

Heat Treatment: Heat treatment involves processes like quenching and tempering to enhance the material's mechanical properties such as hardness, strength, and toughness.

Applications:

• SAE 4330 alloy steel round bars find applications in various industries including aerospace, automotive, oil and gas, and machinery.
• Commonly used in components requiring high strength, toughness, and wear resistance such as gears, shafts, and bolts.