Aluminium Alloy 2024 Round Bars

What is Aluminium Alloy 2024 Round Bar?

Aluminium Alloy 2024 is part of the 2xxx series of aluminium alloys, where copper is the principal alloying element. This alloy is primarily designed for high-strength applications where both toughness and fatigue resistance are critical.

Key features of Aluminium Alloy 2024 round bars:

• High tensile and yield strength
• Excellent fatigue resistance under cyclic loading
• Good machinability, particularly in T3/T4/T351 temper
• Heat-treatable for improved hardness and mechanical performance
• Moderate corrosion resistance, often improved with surface treatments
• Lightweight yet mechanically robust

Aluminium Alloy 2024 round bars are widely used in aircraft structural components, automotive parts, industrial machinery, and precision engineering applications.

Key Features of Aluminium Alloy 2024 Round Bars

• Superior strength-to-weight ratio, ideal for aerospace and defense applications
• Excellent hardness and wear resistance
• Good machinability, compatible with CNC and precision machining
• Heat-treatable to T3/T4/T351 temper for optimized mechanical performance
• Moderate corrosion resistance, often enhanced with anodizing or coatings
• Lightweight yet mechanically strong, suitable for heavy-duty structural applications

These properties make Aluminium Alloy 2024 round bars ideal for aerospace, defense, automotive, and high-performance industrial components.

Chemical Composition of Aluminium Alloy 2024 (%)

• Copper (Cu): 3.8 – 4.9%
• Magnesium (Mg): 1.2 – 1.8%
• Manganese (Mn): 0.3 – 0.9%
• Silicon (Si): ≤ 0.5%
• Iron (Fe): ≤ 0.5%
• Zinc (Zn): ≤ 0.25%
• Titanium (Ti): ≤ 0.15%
• Aluminium (Al): Balance

Role of Alloying Elements

• Copper: Increases strength and hardness, improves fatigue resistance
• Magnesium: Enhances toughness and aids in heat treatment
• Manganese: Improves corrosion resistance and structural stability
• Titanium: Refines grain structure, improving mechanical strength and fatigue resistance
• Silicon & Iron: Contribute to wear resistance and dimensional stability

The combination of these elements ensures that Aluminium Alloy 2024 round bars maintain structural integrity under high stress and fatigue conditions.

Mechanical Properties of Aluminium Alloy 2024 Round Bars

Aluminium Alloy 2024 is highly valued for its mechanical properties, particularly in T3/T351 temper:

• Tensile Strength: 470 – 540 MPa
• Yield Strength: 325 – 370 MPa
• Elongation: 12 – 16%
• Brinell Hardness: 120 – 150 HB

These properties make 2024 aluminium round bars suitable for aerospace components, structural assemblies, and precision engineering parts requiring high strength and fatigue resistance.

Physical Properties of Aluminium Alloy 2024 Round Bars

• Density: 2.78 g/cm³
• Melting Range: 502 – 638°C
• Thermal Conductivity: 121 W/m·K
• Electrical Conductivity: 31% IACS
• Modulus of Elasticity: 73 GPa
• Coefficient of Thermal Expansion: 23.2 µm/m°C

The combination of lightweight, high strength, and thermal stability makes Aluminium Alloy 2024 ideal for structural, aerospace, and high-performance engineering applications.

Heat Treatment of Aluminium Alloy 2024 Round Bars

Aluminium Alloy 2024 can be heat-treated to enhance mechanical performance:

Solution Heat Treatment (T3/T4)

• Heat to 495 – 505°C
• Rapid water quenching
• Artificial aging at 190 – 200°C for several hours

This treatment improves tensile strength, hardness, and fatigue resistance, making the bars suitable for critical aerospace and structural applications.

Stress Relief (T351)

• Heat treatment combined with stretching to remove residual stresses
• Ensures dimensional stability during machining and assembly

Proper heat treatment ensures Aluminium 2024 bars maintain mechanical performance under high stress and fatigue conditions.

Machinability of Aluminium Alloy 2024 Round Bars

2024 aluminium round bars are highly machinable, particularly in T3/T351 temper:

• Compatible with CNC machining, turning, milling, and drilling
• Produces precise tolerances and excellent surface finishes
• Requires use of cutting fluids to control heat generation
• Threads, grooves, and slots can be machined efficiently
• Recommended for precision aerospace and automotive components

Corrosion Resistance of Aluminium Alloy 2024 Round Bars

• Moderate corrosion resistance due to copper content
• Surface treatments such as anodizing, painting, or coating are recommended for marine or outdoor applications
• Performs well in dry, indoor, or protected environments
• Not recommended for continuous exposure to seawater without protection

With proper surface treatment, 2024 aluminium round bars can be reliably used in industrial machinery, aerospace, and automotive applications.

Available Sizes & Specifications

Aluminium Alloy 2024 Round Bars are supplied in:

Standards:

• ASTM B211
• AMS 4045 / 4047
• ISO 209-1

Size Range:

• Diameter: 6 mm – 250 mm
• Length: 3m, 6m, or customized cut lengths
• Tolerances: As per ASTM / ISO standards

Surface Finish:

• Hot Rolled / Bright
• Polished
• Centerless Ground

Applications of Aluminium Alloy 2024 Round Bars

Aluminium Alloy 2024 is widely used in aerospace, defense, automotive, and industrial applications:

Aerospace & Defense

• Aircraft fittings, brackets, and structural components
• Landing gear components and aerospace assemblies
• Military-grade machinery components

Automotive Industry

• Chassis and structural components
• Gear blanks, shafts, and high-strength assemblies
• Lightweight automotive parts for improved fuel efficiency

Industrial & Engineering Applications

• Shafts, rods, and precision mechanical assemblies
• Bearings, bushings, and rotating machinery
• Tooling, jigs, and fixtures for industrial manufacturing

Other Applications

• High-strength frames and structural supports
• Components requiring fatigue resistance under cyclic loads
• Aerospace, defense, and high-performance engineering projects

Advantages of Aluminium Alloy 2024 Round Bars

• High strength-to-weight ratio for aerospace and structural applications
• Excellent fatigue resistance for high-cycle applications
• Good machinability for precision components
• Heat-treatable to T3/T4/T351 for superior mechanical performance
• Lightweight yet durable, reducing overall assembly weight
• Versatile for structural, mechanical, and aerospace applications

Quality Testing & Inspection

All Aluminium Alloy 2024 round bars undergo:

• Chemical composition analysis
• Mechanical property testing
• Hardness testing
• Dimensional inspection
• Surface finish verification

Mill Test Certificates (MTC) are provided per ASTM and ISO standards. Third-party inspection is available upon request.

Why Choose Virami Steel Hub for Aluminium Alloy 2024 Round Bars?

• Trusted aluminium alloy manufacturer and supplier in Mumbai, India
• High-quality aerospace and industrial-grade aluminium alloys
• Competitive global pricing with fast delivery
• Custom sizes, lengths, and heat treatment options
• Certified quality assurance and MTC
• Expertise in aerospace, automotive, and industrial applications

Conclusion

Aluminium Alloy 2024 Round Bars are high-strength, heat-treatable aluminium-copper alloys offering exceptional tensile strength, fatigue resistance, and machinability. Ideal for aerospace, defense, automotive, and industrial applications, Aluminium 2024 ensures durability, lightweight performance, and long-term reliability.

Virami Steel Hub supplies premium-quality Aluminium Alloy 2024 Round Bars with certified testing and customizable sizes, making it the preferred choice for critical engineering, aerospace, automotive, and industrial applications.