5754-H22 Aluminum vs. 5754-H32 Aluminum

Last Updated : Feb. 08, 2025

5754-H22 aluminum and 5754-H32 aluminum are different tempers of the same alloy, with the main difference being their treatment methods and corresponding strength and fatigue strength.

Although the mechanical properties of 5754-H22 and 5754-H32 aluminum alloys are similar, H32, due to its stabilization treatment, has slightly higher fatigue strength, making it suitable for applications that require higher fatigue resistance. On the other hand, H22 strikes a better balance between strength and ductility.

5754-H22 Aluminum vs. 5754-H32 Aluminum Mechanical Properties

5754-H22 Aluminum and 5754-H32 Aluminum Manufacturing Process and Temper

• 5754-H22: This temper of 5754 aluminum undergoes strain hardening followed by partial annealing to relieve stress and achieve higher strength. The partial annealing process helps balance the material's strength and ductility, placing its performance between the annealed state (O) and the fully hard state (H28).
• 5754-H32: This temper of 5754 aluminum undergoes strain hardening followed by stabilization treatment. Stabilization treatment typically involves more precise control to maintain the alloy's strength and enhance its fatigue resistance. Its strength is between the annealed state (O) and the high hardness state (H38).

5754-H22 Aluminum and 5754-H32 Aluminum Strength

• 5754-H22: Due to partial annealing, the strength of H22 aluminum alloy is between the annealed (O) and fully hard (H28) states. This results in relatively moderate mechanical properties, making it suitable for applications that require a balance between strength and ductility.
• 5754-H32: In contrast, the H32 temper undergoes stabilization treatment, giving it strength between the annealed and high hardness states. Due to stabilization, its fatigue strength is slightly higher than that of H22, making it suitable for applications involving higher loads or repeated stress.

5754-H22 Aluminum and 5754-H32 Aluminum Fatigue Strength

• 5754-H22: Fatigue strength is relatively low, making it suitable for applications with light loads or where fatigue strength is not a critical requirement.
• 5754-H32: Due to its stabilization treatment, H32 aluminum alloy has slightly higher fatigue strength than H22, making it more reliable in environments subject to repeated loads or vibrations.

Other Properties

The other properties of both 5754-H22 and 5754-H32 aluminum are very similar, including Brinell hardness, tensile strength, and shear strength. The main differences between them lie in fatigue strength and the details of their manufacturing processes.

5754-H22 Aluminum and 5754-H32 Aluminum Applications

• 5754-H22: Due to its good ductility and moderate strength, H22 aluminum is suitable for applications requiring certain mechanical properties but not demanding high fatigue strength, such as general structural applications.
• 5754-H32: With its higher fatigue strength, H32 aluminum is suitable for environments that experience repeated loads, vibrations, or long-term working loads, such as vehicles and machinery that require higher durability.

Applications of 5754-H22 Aluminum

5754-H22 aluminum has good ductility and moderate strength, making it an ideal choice for general structural applications. In these applications, the requirement for high fatigue strength is lower, with a focus on balancing strength and ductility. For example, 5754-H22 aluminum is commonly used in vehicle bodies, building facades, and other lightweight structural components, where the demand for tensile strength is moderate, and the material must also have good formability to accommodate various processing needs. Additionally, due to its good machinability, H22 aluminum is widely used in components that require welding, stamping, or bending.

Applications of 5754-H32 Aluminum

5754-H32 aluminum, due to its stabilization treatment, has higher fatigue strength than H22 aluminum, making it suitable for environments that experience long-term repeated loads, vibrations, or high-intensity work conditions. This material is commonly used in vehicles, machinery, and other sectors that require high durability and fatigue resistance. For example, 5754-H32 aluminum is widely used in automotive chassis, ship structural components, and heavy machinery, where the material must maintain stable performance under continuous load and vibration. Its superior fatigue strength makes H32 aluminum an ideal choice for manufacturing high-load components, ensuring reliability and long service life under harsh working conditions.

Further reading: 5456 5454 5754 Marine Grade Aluminum Bar 5754 Marine Grade Aluminum Plate Sheet Marine Grade Aluminum Round Bar 5754 5454 5456

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