7075 aluminum alloy is a high-strength aluminum-zinc alloy sheet known for its excellent mechanical performance and good corrosion resistance. It is one of the strongest heat-treatable aluminum alloys currently available, according to standard mechanical property data.
The main alloying element of 7075 plate is zinc. Small amounts of magnesium, copper, and chromium are added to improve strength, toughness, and overall stability. After solution heat treatment, the hardness of 7075 aluminum alloy can reach up to 150 HB, making it suitable for high-load applications.
This alloy also offers a high strength-to-weight ratio, which is critical in industries where weight reduction matters. After surface treatment to form Alclad 7075, corrosion resistance is further improved, making it a widely used aerospace-grade aluminum material.
Zggdmetal is a professional 7075 aluminum plate supplier based in Foshan, China. We provide a full range of specifications and support custom sizes to meet different project requirements. We supply stable, high-quality 7075 aluminum alloy plates for industrial and structural use.We can also supply 7075 T6 aluminum sheet in various thicknesses, as well as 7075 T651 aluminum plates in different sizes.
Advantages of 7075 Aluminum Plate
1.High Strength
The hardness of 7075 aluminum alloy is in the range of 150 HB, which is higher than that of the 2000 series. It is currently one of the strongest alloy materials in terms of mechanical strength. After heat treatment and strengthening, the tensile strength in T6, T651, and other states can reach approximately 570 MPa or more.
2.Excellent Fatigue Resistance
Thanks to the heat treatment strengthening process of the high zinc-magnesium alloy body, 7075 aluminum exhibits excellent fatigue resistance under repeated cyclic loading. Compared with ordinary aluminum alloys, it can maintain structural integrity and mechanical strength during long-term use, even in high-stress environments.
3.Heat Treatable and Strengthenable
7075 aluminum plate can be heat-treated to relieve internal stress and strengthen its mechanical properties, second only to the strength of carbon steel.
4.Good Corrosion Resistance
After anodic surface oxidation treatment, equipment using this alloy plate can be used for a long time in chemical media environments. Its corrosion resistance is lower compared to the 5000 and 6000 series.
Specifications of 7075 Aluminum Plate
| Alloy |
7075 |
| Temper |
O, T6, T651, T73, T76, T7351 |
| Thickness |
6.0 mm – 150 mm |
| Width |
1,000 mm – 2,500 mm |
| Length |
2,000 mm – 10,000 mm |
| Standard |
ASTM B209 / AMS 4044, AMS 4045 |
| Surface Finish |
Alclad, Polished, Brushed, Anodized, PVC Protective Film |
| MOQ |
4 TON |
| Service |
Cutting, CNC machining, drilling, milling |
Chemical Composition of 7075 Aluminum Plate (%)
| Aluminum (Al) |
Balance |
| Zinc (Zn) |
5.1 – 6.1 |
| Magnesium (Mg) |
2.1 – 2.9 |
| Copper (Cu) |
1.2 – 2.0 |
| Chromium (Cr) |
0.18 – 0.28 |
| Silicon (Si) |
≤ 0.40 |
| Iron (Fe) |
≤ 0.50 |
| Manganese (Mn) |
≤ 0.30 |
| Titanium (Ti) |
≤ 0.20 |
| Other (each) |
≤ 0.05 |
| Other (total) |
≤ 0.15 |
Mechanical Properties of 7075 Aluminum Plate
| Temper |
Tensile Strength (MPa) |
Yield Strength (MPa) |
Elongation (%) |
Hardness (HB) |
| O |
≥ 220 |
≥ 95 |
≥ 17 |
~60 |
| T6 |
≥ 570 |
≥ 503 |
10 – 13 |
~150 |
| T651 |
≥ 570 |
≥ 503 |
10 – 13 |
~150 |
| T73 |
≥ 505 |
≥ 435 |
11 – 14 |
~135 |
| T7351 |
≥ 510 |
≥ 440 |
11 – 14 |
~135 |
Physical Properties of 7075 Aluminum Plate
| Density |
2.81 g/cm³ |
| Modulus of Elasticity |
~71 GPa |
| Thermal Conductivity |
~130 W/m·K |
| Melting Point |
~477 – 635 °C |
Applications of 7075 Aluminum Plate
Thanks to its extremely high strength and stable mechanical performance, 7075 plate is widely used in demanding and high-end applications where safety, durability, and weight reduction are critical.
Aerospace Industry
In the aerospace field, 7075 aluminum alloy plate is valued for its high strength-to-weight ratio and fatigue resistance. Typical applications include aircraft fuselage structural components, high-stress load-bearing parts, internal wing structures, and selected landing gear components. Its reliability under extreme stress makes it a core material in aircraft manufacturing.
Engineering Machinery and Mold Manufacturing
7075 aluminum plate is commonly used for high-strength mechanical parts that require dimensional stability and precision. It is also widely applied in mold manufacturing, including plastic molds, stamping molds, and honeycomb structural molds. The material supports precise machining and maintains strength under repeated use.
Automotive Applications
In military equipment, 7075 aluminum sheet is used for critical structural parts that must perform reliably under harsh conditions. In the automotive sector, it is often chosen for high-performance applications such as racing car frames, high-end bicycle frames, and other lightweight structural components where strength and weight savings are essential.
Electronics and Precision Fields
Due to its excellent machinability and strength, 7075 aluminum plate is also used for high-performance fixtures, precision mechanical parts, special tools, and customized equipment components. It provides stable performance in applications that demand accuracy and long-term reliability.
