7475 T7351 Aluminum Plate Sheet

7475-T7351 aluminum alloy is a high-strength aluminum alloy, which belongs to the T7351 temper of the 7475 series. Its manufacturing process involves a series of complex heat treatment steps designed to optimize its properties, especially in terms of stress corrosion resistance.

7475 aluminum alloy is an aluminum alloy with zinc as the primary alloying element, typically containing magnesium, copper, chromium, and other elements. Its chemical composition provides high strength, making it suitable for applications requiring high strength and corrosion resistance, such as in aerospace. The T7351 temper of 7475 aluminum is enhanced through precise heat treatment to improve its stress corrosion resistance.

7475-T7351 aluminum alloy has various designations:

UNS A97475; ISO AlZn5.5MgCu(A); Aluminium 7475-T7351; AA7475-T7351; Al7475-T7351

T7351 7475 Aluminum Heat Treatment Process

The T7351 temper of 7475 aluminum is achieved through a series of heat treatment and mechanical processing steps. First, the aluminum alloy undergoes solution heat treatment to increase its strength. Next, a stress relieving process is performed, involving the stretching of the metal to reduce internal stresses and improve material stability. Finally, artificial aging is applied to further enhance the alloy's mechanical properties and stress corrosion resistance.

• Solution Heat Treatment: This process involves heating the 7475 aluminum alloy to a specific temperature, allowing the alloying elements to dissolve into the matrix, resulting in a uniform composition distribution.
• Stress Relieving: This step applies a certain degree of stretching to the 7475 aluminum alloy to remove internal stresses formed during casting or forging. It helps improve the alloy's subsequent processing performance and reduces deformation during use.
• Artificial Aging: This step involves controlling temperature and time to trigger precipitation reactions within the metal, stabilizing its properties. The degree and duration of aging will affect the alloy's final strength and corrosion resistance. In the T7351 temper, the aging process is specially designed to enhance stress corrosion resistance.

7475 T7351 Aluminum Corrosion Resistance

The 7475-T7351 aluminum alloy in the T7351 temper places a strong emphasis on stress corrosion resistance. By optimizing the aging process, its stress corrosion resistance is significantly better than that of non-aged variants of the aluminum alloy. For components in aerospace and structural applications that may be exposed to harsh environments, 7475-T7351 aluminum provides a longer service life and reduces the risk of crack propagation caused by stress corrosion.

7475 T7351 Aluminum Mechanical Properties

• Strength: While the strength of 7475-T7351 aluminum is relatively lower compared to other 7475 alloys, it still exhibits satisfactory strength and rigidity, making it suitable for many structural applications. Its yield strength and tensile strength perform well in meeting specific engineering requirements.
• Toughness: Compared to other high-strength aluminum alloys, 7475-T7351 may have slightly lower toughness, but with proper treatment, its toughness is sufficient to meet most application needs.

7475 T7351 Aluminum Applications

Due to its excellent strength-to-weight ratio, 7475-T7351 aluminum is widely used in the aerospace industry, including aircraft structural components, fuselage, wing beams, and more. It is also suitable for other high-performance engineering applications, such as high-strength frames and brackets.

• Aerospace Industry: Particularly for aircraft structural components that require relatively lower strength but excellent corrosion resistance, such as wing skins, fuselage frames, and landing gear components.
• Military Applications: Used in the manufacture of various high-performance aerospace and space equipment, especially in applications exposed to highly corrosive environments.
• High-strength Structural Components: Suitable for structural applications in ships, bridges, and other industrial fields.

7475 T7351 Aluminum Processing and Welding Properties

7475-T7351 aluminum alloy has good machinability and is suitable for common aluminum alloy processing methods such as extrusion, machining, and forging. However, due to its high-strength characteristics, special attention should be given to tool selection and processing conditions during machining. For welding, because of its high strength and the welding characteristics of aluminum alloys, specific welding techniques may be required to reduce the risk of cracks in the heat-affected zone.

7475 T7351 Aluminum Material Data Sheet

7475 T7351 Aluminum Chemical Composition

Hot Selling 7475 T7351 Aluminum Plate Size List