7050 aluminum plate is a high-performance aluminum alloy known for its high strength-to-weight ratio, excellent corrosion resistance, and strong exfoliation resistance. It belongs to the 7000 series of heat-treatable aluminum alloys. Zinc is the main alloying element, making up about 5.7%, with magnesium (about 1.9%) and copper (about 2.0%) added to enhance overall performance.
Due to its very high mechanical strength and strong resistance to stress corrosion cracking, 7050 plate is ideal for high-strength structural applications. It performs especially well in demanding environments where long-term reliability and durability are critical.
As a professional 7050 aluminum plates supplier , Zggdmetal provides 7050 T7451 plates in a wide range of sizes and specifications. In the T7451 temper, the material undergoes a controlled heat treatment process that improves strength and fatigue resistance while maintaining good dimensional stability. This makes 7050 T7451 a premium aluminum alloy widely used in aerospace and other high-end engineering applications.
Advantages of 7050 Aluminum Plate
Superior Mechanical Strength
7050 aluminum plate offers excellent mechanical properties after precipitation strengthening. Its tensile strength reaches about 510 MPa, which is much higher than that of 6000 series aluminum alloys. The tensile and yield strength levels are comparable to 7075 aluminum alloy. More importantly, 7050 aluminum plate maintains stable and consistent mechanical performance in thick sections, making it ideal for high-load and large structural components.
Outstanding Fatigue Resistance
As a typical Al-Zn-Mg-Cu alloy, the 7050 aluminum alloy plate exhibits a refined and uniform internal structure following tensile stress relief. This improves overall toughness and dimensional stability. Under repeated and high cyclic loads, parts made from 7050 aluminum alloy show strong resistance to fatigue cracking, supporting long-term and reliable service.
Strong Exfoliation Corrosion Resistance
Through optimized heat treatment and the incorporation of zirconium (Zr), the grain structure of the 7050 aluminum plate is effectively refined. This results in a more stable and continuous grain boundary structure. As a result, the material offers excellent resistance to exfoliation corrosion and maintains reliable performance even in harsh operating environments.
Excellent Stress Corrosion Cracking Resistance
Resistance to stress corrosion cracking is a key advantage of 7050 aluminum plate. In T7451, T7651, and similar tempers, the alloy undergoes tensile stress relief and over-aging treatment. This greatly improves corrosion resistance and structural stability compared with the T6 condition. Because of this, 7050 plate is widely used for aerospace and military structural components exposed to humid or corrosive environments.
7050 Aluminum Plate Specification
| Alloy Grade |
7050 |
| Temper |
T7451 / T7651 / T651 / T73 / T74 |
| Thickness |
0.5 mm – 120 mm |
| Width |
1000 mm – 1525 mm |
| Length |
2000 mm – 6000 mm |
| Standard |
ASTM B209 / ASME SB209 AMS 4050 / AMS 4340 / AMS 4342 EN 3982 UNS A97050 |
| Surface Treatment |
Anodized |
| MOQ |
2 TON |
| Services |
Sample support available, testing certificates provided. |
Chemical Composition of 7050 Aluminum Plate (wt.%)
| Aluminum (Al) |
Balance |
| Zinc (Zn) |
5.7 – 6.7 |
| Magnesium (Mg) |
1.9 – 2.6 |
| Copper (Cu) |
2.0 – 2.6 |
| Chromium (Cr) |
0.04 – 0.12 |
| Zirconium (Zr) |
0.08 – 0.15 |
| Iron (Fe) |
≤ 0.15 |
| Silicon (Si) |
≤ 0.12 |
| Titanium (Ti) |
≤ 0.06 |
| Other (each) |
≤ 0.05 |
| Other (total) |
≤ 0.15 |
Mechanical Properties of 7050 Aluminum Sheet / Plate
| Temper |
Tensile Strength (MPa) |
Yield Strength (MPa) |
Elongation (%) |
Hardness (HB) |
| T7451 |
≥ 510 |
≥ 455 |
≥ 7 |
~150 |
| T7651 |
≥ 500 |
≥ 440 |
≥ 7 |
~145 |
| T651 |
≥ 540 |
≥ 480 |
≥ 6 |
~160 |
| T73 |
≥ 470 |
≥ 415 |
≥ 8 |
~135 |
| T74 |
≥ 495 |
≥ 435 |
≥ 7 |
~140 |
Applications of 7050 Aluminum Plate
Thanks to its high strength, excellent corrosion resistance, and outstanding structural stability, 7050 plate is widely used in industries where safety and reliability are critical. Key applications include:
Aerospace Structural Components
7050 aluminum plate is ideal for critical load-bearing parts such as aircraft fuselage frames, wing skins, connectors, and reinforcing ribs. It meets strict aerospace standards for strength, durability, and dimensional stability.
Defense and Military Equipment
This alloy is suitable for military vehicles, armored frames, and other components that demand high strength, corrosion resistance, and long-term reliability under harsh conditions.
High-Performance Industrial and Mechanical Components
7050 aluminum alloy plate is commonly used in high-strength molds, tooling fixtures, heavy machinery frames, and other structural components that require both excellent load-bearing capacity and good machinability.
Specialized Sports Equipment and High-End Structures
The alloy is also applied in high-performance bicycles, professional sports equipment, and other products where a strong yet lightweight design is essential.
