5182-H19 Aluminum vs. 5182-O Aluminum

Feb. 08, 2025

5182 aluminum alloy exhibits significant performance differences in different processing states, especially between H19 and O states.

5182-H19 Aluminum vs 5182-O Aluminum Performance Comparison Table

• Strength and Hardness: 5182-H19 offers higher strength and hardness, suitable for high-load and strength-demanding applications; while 5182-O provides better formability and fatigue performance, suitable for applications requiring good processability and durability.
• Formability: 5182-O is more formable, suitable for deep drawing or complex forming, whereas 5182-H19 is more oriented toward high-strength structural applications.
• Fatigue and Shear Strength: 5182-H19 excels in shear strength compared to 5182-O, but its fatigue performance is inferior; 5182-O performs better under alternating loads and offers longer-lasting durability.

5182-H19 Aluminum and 5182-O Aluminum Mechanical Properties

5182-H19 Aluminum vs. 5182-O Aluminum Hardness

• 5182-H19: In this state, 5182 aluminum undergoes significant strain hardening, making it much harder than 5182-O. The increase in hardness makes the H19 variant more suitable for applications requiring high strength.
• 5182-O: After annealing treatment, 5182 aluminum is relatively soft, with low hardness, making it easier to shape and process. However, it is less suitable for high-strength applications compared to the H19 variant.

5182-H19 Aluminum vs. 5182-O Aluminum Tensile Strength

• 5182-H19: The 5182 aluminum in H19 state has higher tensile strength. This enhanced strength makes it superior in applications where large stresses need to be withstood. Specifically, the tensile strength of 5182-H19 is at least 10 MPa (or 1.5 ksi) higher than that of H18, making H19 an ideal choice in high-strength environments.
• 5182-O: Compared to H19, 5182-O has lower tensile strength. While it is sufficient for applications with low-strength requirements, it is unsuitable for situations requiring high tensile force or extreme loads.

5182-H19 Aluminum vs. 5182-O Aluminum Elongation (Ductility)

• 5182-H19: Due to strain hardening, 5182-H19 has poor ductility. In applications that require significant deformation, H19 may exhibit lower processability, as it lacks sufficient ductility for complex forming.
• 5182-O: In contrast, 5182-O has higher elongation, meaning it has better ductility and can undergo more complex forming operations without cracking or breaking. This makes it more suitable for applications requiring high plasticity and good formability.

5182-H19 Aluminum vs. 5182-O Aluminum Shear Strength

• 5182-H19: Due to its higher hardness and strength, 5182-H19 also has significantly higher shear strength. It performs better in applications where shear force is involved, such as in high-strength fasteners or structural components.
• 5182-O: Compared to H19, 5182-O has lower shear strength, making it less suitable for environments that require substantial shear force.

5182-H19 Aluminum vs. 5182-O Aluminum Fatigue Strength

• 5182-H19: While 5182 aluminum in the H19 state excels in tensile and shear strength, its fatigue resistance is relatively poor. This is because strain hardening makes the material more brittle, making it difficult to withstand prolonged alternating loads.
• 5182-O: In contrast, 5182-O has superior fatigue strength because the annealed state makes it more resilient and ductile, allowing it to better resist alternating stress and fatigue damage. Therefore, 5182-O is more suitable for applications that undergo cyclical loading over time.

5182-H19 Aluminum and 5182-O Aluminum Application Comparison

5182-H19 Aluminum Applications

5182-H19 aluminum is commonly used in fields that require high strength and hardness. These fields include structural components for ships and pressure vessels, where the material must withstand high mechanical loads and harsh environmental conditions. This state of 5182 aluminum is also widely used in automotive structural parts, such as vehicle frames and key load-bearing components, which need to provide sufficient strength and hardness to ensure vehicle safety and durability. Additionally, high-strength thin sheets are widely used in aviation, automotive, and manufacturing industries. 5182-H19 provides the necessary tensile and shear strength to meet the high-strength demands of these applications. It is also suitable for aluminum components that need to withstand heavy loads, such as industrial structural parts or mechanical components, which are often subjected to significant mechanical stresses and workloads.

5182-O Aluminum Applications

5182-O aluminum is more suitable for applications that require higher ductility and excellent formability. Automotive body panels are one typical application, where the material must exhibit good ductility during the forming process to ensure complex design of the vehicle body and structure. Similarly, beverage cans and packaging materials also require good formability and fatigue strength to ensure the safety and stability of the packaging over time. Due to its excellent ductility and higher fatigue strength, 5182-O is particularly suitable for deep drawing parts that need to undergo large deformations during production and often face cyclic loading or alternating stresses during use. Therefore, choosing 5182-O can effectively enhance product durability and fatigue resistance.

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