5754 Aluminum Sheet
5754 aluminum sheet is a non-heat-treatable alloy in the 5xxx series, with magnesium as its main alloying element. It is well-known for its excellent corrosion resistance, high strength, and good weldability, making it suitable for a wide range of industrial applications.
5754 Aluminum Sheet Tempers and Their Applications
5754 aluminum alloy is available in a variety of tempers, each offering a different balance between strength and formability:
- O (Annealed): The softest temper, providing the best ductility and formability.
- H111: Slightly work-hardened, offering improved strength while maintaining good formability.
- H22, H24, H26: Strength increases progressively through cold working, with some reduction in formability.
The choice of temper depends on specific application requirements, aiming for a balance between strength and formability.
| Temper | Characteristics Description | Typical Properties (Relative) | Typical Application Fields |
| O (Annealed) | Softest temper, annealed, excellent ductility, easy to form | Lowest strength, excellent formability | Automotive body panels, deep-drawn parts, complex stretch-formed components |
| H111 | Slight work hardening, retains much of the softness of the annealed state | Low to medium strength, good formability | Hull structures, marine sheets, automotive panels, general industrial structural components |
| H114 | Rolled and hardened, usually in tread plate form | Medium strength, good formability | Anti-slip steps, marine anti-slip decks, footplates, industrial platforms |
| H22 | Work-hardened and moderately tempered, balance of strength and ductility | Medium-high strength | Shipbuilding (decks, structures), automotive chassis, vehicle structural parts |
| H24 | Greater work hardening than H22, offering higher strength | High strength, lower ductility | Hull plates, frame supports, structural reinforcement parts |
| H26 | Higher degree of work hardening, further increased strength | Higher strength, low ductility | High-stress structural components, mechanical load-bearing structures, heavy-duty frames |
| H28 | Maximum work hardening, highest hardness | Highest strength, lowest ductility | High-strength demanding applications, such as high-strength guards, high-load connectors, heavy machinery parts |
Note:
- Degree of work hardening increases in the following order: O < H111 < H114 < H22 < H24 < H26 < H28.
- Recommended for marine applications: H111, H114 (good corrosion resistance + moderate strength).
- Recommended for hull structures: H22, H24 (higher strength).
- Recommended for high load-bearing parts: H26, H28 (maximum strength but poor formability).
- Recommended for deep-drawing complex parts: O temper (soft, extremely formable).
Advantages of 5754 Aluminum Sheet
Corrosion Resistance
Exhibits excellent corrosion resistance in humid and salt spray environments, making it suitable for ships, offshore facilities, and similar applications.
Workability
Easily formed through cold/hot processing, supports stamping, bending, and other complex processes.
Workability can be improved through annealing (heating at 350–440°C, holding for 30–120 minutes).
Weldability
Suitable for conventional welding techniques such as arc welding and resistance welding, providing high weld strength and resistance to cracking.
Chemical Composition of 5754 Aluminum Sheet
The typical chemical composition of 5754 aluminum is as follows:
- Aluminum (Al): Remainder
- Magnesium (Mg): 2.6–3.6%
- Manganese (Mn): ≤ 0.50%
- Chromium (Cr): ≤ 0.30%
- Iron (Fe): ≤ 0.40%
- Silicon (Si): ≤ 0.40%
- Copper (Cu): ≤ 0.10%
- Zinc (Zn): ≤ 0.20%
- Titanium (Ti): ≤ 0.15%
- Others (each): ≤ 0.05%
- Others (total): ≤ 0.15%
Mechanical Properties of 5754 Aluminum Sheet
The mechanical properties of 5754 aluminum vary depending on the temper (hardness). Common tempers include O (annealed), H111, H22, H24, and H26. Typical properties are as follows:
- Tensile Strength: 220–330 MPa
- Yield Strength: 80–250 MPa
- Elongation at Break: 14–16%
- Density: 2.66–2.67 g/cm³
- Young's Modulus: 69 GPa
- Thermal Conductivity: 130–160 W/m·K
- Coefficient of Thermal Expansion: 23.7–23.9 µm/m·K
Characteristics of 5754 Aluminum Sheet
- Corrosion Resistance: Excellent resistance to atmospheric and seawater corrosion makes it ideal for marine and offshore applications.
- Weldability: Good weldability using all standard welding methods, with no adverse effect on corrosion resistance.
- Formability: Good formability in O and H111 tempers, suitable for deep drawing and complex shapes.
- Surface Treatment: Suitable for decorative anodizing, enhancing aesthetic appeal.
5754 Aluminum Sheet Applications
Marine Applications of 5754 Aluminum Sheet
- Hull Structures: Utilized in the construction of boat and ship hulls, 5754 aluminum provides a lightweight yet strong solution that resists corrosion over time .
- Decks and Superstructures: The alloy's strength and corrosion resistance make it suitable for decks and superstructures, ensuring durability and safety .
- Fuel Tanks: 5754 aluminum is employed in the fabrication of fuel tanks due to its ability to withstand the corrosive effects of fuel and seawater .
- Fishing Equipment and Offshore Structures: Its resilience in harsh marine conditions makes it ideal for fishing vessels and offshore platforms .
Temper Variations and Their Marine Uses
5754 aluminum is available in various tempers, each offering different mechanical properties to suit specific marine applications:
- 5754 H111: Provides a balance between strength and formability, suitable for hulls and decks .
- 5754 H22: Offers higher strength, making it ideal for structural components and fuel tanks .
- 5754 O (Annealed): Exhibits maximum ductility, used where complex forming is required .
Comparative Advantage Over Other Alloys
Compared to other aluminum alloys like the 2xxx series, which are more susceptible to corrosion, 5754 aluminum demonstrates superior performance in marine environments. Its magnesium content contributes to its enhanced corrosion resistance, making it a preferred choice for long-term applications in seawater .
5754 aluminum sheet's combination of corrosion resistance, strength, and workability makes it a versatile and reliable material for a wide range of marine applications, from hull construction to offshore structures.
Applications of 5754 Aluminum Sheet
Due to its excellent properties, 5754 aluminum sheet is widely used across various industries:
- Automotive: body panels, doors, roofs, hoods, trunk lids, chassis, and flooring.
- Transportation: railway and truck bodies, trailers, and other transport structures.
- Industrial: food processing equipment, chemical and nuclear structures, and tread plates.
- Architecture: exterior walls, tread plates, roofing, and decorative elements, fully utilizing its anodizing capabilities.
| Field | Specific Application Scenarios |
| Automotive Manufacturing | Doors, molds, seals (utilizing its lightweight and fatigue-resistant characteristics) |
| Transportation | High-speed rail barrier panels, transport tanks (relying on high strength and impact resistance) |
| Architectural Field | Building wall panels, roofing materials (surface can be anodized for aesthetics and durability) |
| Industrial Containers | Pressure vessels, storage tanks (meeting high sealing and pressure resistance requirements) |
Manufacturing and Processing of 5754 Aluminum Sheet
- Weldability: Excellent welding performance using MIG, TIG, and resistance welding; filler alloy 5356 is recommended.
- Machinability: Moderate, but can be machined with standard tools.
- Formability: Cold working processes (rolling, extrusion) can enhance strength, but it is not suitable for heat treatment.
Advantages and Limitations of 5754 Aluminum Sheet
- Advantages: High strength-to-weight ratio, corrosion resistance, and weldability.
- Limitations: Non-heat-treatable, limited to wrought processing (not castable).
Comparison of 5754 Aluminum Sheet with Similar Alloys
- Compared to 5052: 5754 offers higher strength but lower ductility.
- Compared to 6061: 5754 has lower machinability but better corrosion resistance.
Comparison with Other Alloys
| Comparison Item | 5754 Aluminum Sheet | 5052 Aluminum Sheet |
| Magnesium Content | 2.6%-3.6% | 2.2%-2.8% |
| Tensile Strength | 165–265 MPa | 170–245 MPa |
| Typical Applications | High-speed rail barrier panels, ship structures | Electronic enclosures, architectural decoration |
Standards and Designations of 5754 Aluminum Sheet
5754 complies with ASTM B209, EN 485, and ISO 6361 standards, and is also designated as AlMg3 and A95754.
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