7075 Aluminum Alloy Plates and Sheets | GNEE
Overview of 7075 Aluminum Alloy
7075 aluminum alloy is a high-performance aluminum material in which zinc is the primary alloying element. It is widely recognized for its exceptional strength, comparable to many steels, while maintaining a significantly lower weight. The alloy offers excellent fatigue strength and fair machinability, making it suitable for demanding structural applications.
Although 7075 aluminum exhibits lower corrosion resistance than some other aluminum alloys, it performs notably better than the 2000 series alloys. Due to its advanced performance characteristics and processing requirements, 7075 aluminum is typically used in high-value, high-stress applications, where performance outweighs cost considerations.
Chemical Composition of 7075 Aluminum
The typical chemical composition of 7075 aluminum alloy includes:
Zinc (Zn): 5.6–6.1%
Magnesium (Mg): 2.1–2.5%
Copper (Cu): 1.2–1.6%
Minor elements (Si, Fe, Mn, Ti, Cr, others): ≤0.5% total
Aluminum (Al): Balance
This alloy is available in multiple tempers, including 7075-O, 7075-T6, and 7075-T651, allowing it to meet a wide range of mechanical and structural requirements.
General Characteristics and Performance
7075 aluminum is classified as a very high-strength material, commonly used for highly stressed structural components. Certain tempers, such as T7351, provide enhanced resistance to stress corrosion cracking, making them especially suitable for aerospace environments.
As a flagship alloy of the 7000 series, 7075 aluminum is known for its high static strength and reliability under extreme loads. It is commonly specified in tempers including T6, T651, T73, T7351, and T76, each offering a different balance of strength, toughness, and corrosion resistance.
7075-T651 Aluminum Explained
7075-T651 aluminum refers to 7075 alloy that has undergone solution heat treatment, followed by stress relief through controlled stretching, and then artificial aging. This process minimizes internal stresses while allowing alloying elements to precipitate evenly, resulting in maximum and stable mechanical strength.
Because of this treatment, 7075-T651 aluminum demonstrates excellent fatigue performance, fair machinability, and reliable resistance to corrosion and resistance welding, making it suitable for high-stress engineering components.
Mechanical Properties of 7075-T651 (Typical)
Ultimate Tensile Strength: ~570 MPa (83,000 psi)
Yield Strength: ~500 MPa (73,000 psi)
Elongation: 3–9% (varies by thickness and form)
Note: Thicker plates may exhibit slightly reduced strength and elongation compared to thinner products.
7075 Aluminum Plates and Sheets
7075 aluminum plates and sheets are among the strongest products in the 7xxx aluminum series. With zinc as the primary alloying element, this alloy delivers steel-like strength with significant weight savings.
Compared with 2xxx series alloys, 7075-T7x51 tempers provide improved stress corrosion resistance, making them a preferred choice for critical aerospace and defense applications. These products are widely used in accordance with standards such as ASTM B209 and AMS-QQ-A-250/4, as well as various customer-specific requirements.
Aluminum Plate 7075 – Application Profile
7075 aluminum plate is often selected as an alternative to 2024 aluminum when higher mechanical performance is required. As a precipitation-hardened aluminum-zinc alloy, it achieves very high strength levels, making it ideal for airframe structures and other highly stressed components.
Typical Applications of 7075 Aluminum T651
7075 aluminum alloy is widely used in industries where maximum strength and reliability are essential, including:
Aircraft and airframe structures
Highly stressed aerospace components
Aircraft fittings and assemblies
Gears, shafts, and transmission parts
Missile and defense components
Valve parts and precision mechanical elements
Bicycle frames and sporting equipment
All-terrain vehicle (ATV) sprockets
Industrial molds and tooling
Why Choose GNEE 7075 Aluminum?
As a professional aluminum supplier, GNEE provides high-quality 7075 aluminum plates and sheets with stable performance and consistent quality. GNEE's 7075 aluminum products are suitable for aerospace, defense, automotive, and industrial manufacturing applications that demand high strength, fatigue resistance, and weight reduction.
With a comprehensive range of tempers and product forms, GNEE supports customers in selecting the optimal 7075 aluminum solution for their specific engineering needs.
