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7075/7475/7050/7B50/7A55 Aerospace Grade Aluminium Plate Sheet For Aircraft
The 7xxx system alloy is an aluminum alloy with Zn as the main alloy element, which is a heat treatment to strengthen the aluminum alloy. The alloy is Mg, Al-Zn-Mg alloy, offering good thermal deformation and a wide quenching range. It achieves high strength under appropriate conditions and maintains good welding performance and corrosion resistance. It is an ideal high-strength weldable aluminum alloy.
Al-Zn-Mg-Cu alloys are developed by adding Cu to the Al-Zn-Mg base. Known as ultra-high strength aluminum alloys, their yield strength is close to their tensile strength. While they offer a very high strength ratio and easy processing, they are best utilized for load-bearing structures at temperatures below 120ºC.
The 7xxx series includes sheet metal, aluminum plate, medium plate, heavy plate, forgings, and extruded parts. Specifically, 7175 is a special forged alloy, while 7475 is primarily used for thin and thick plates, offering the best damage tolerance in the 7075 series.
| Series | Alloy | Zn | Mg | Cu | Cr | Zr | Ti | Si | Fe |
|---|---|---|---|---|---|---|---|---|---|
| 7075 Series | 7075 | 5.0-6.1 | 2.1-2.9 | 1.2-2.0 | 0.18-0.28 | - | - | ≤0.40 | ≤0.50 |
| 7175 | 5.0-6.1 | 2.1-2.9 | 1.2-2.0 | 0.18-0.28 | - | - | ≤0.15 | ≤0.20 | |
| 7475 | 5.2-6.2 | 1.9-2.9 | 1.2-1.9 | 0.18-0.25 | - | - | ≤0.10 | ≤0.12 | |
| 7050 Series | 7050 | 5.7-6.7 | 1.9-2.9 | 2.0-2.6 | 0.04 | 0.08-0.15 | - | ≤0.12 | ≤0.15 |
| 7010 | 5.7-6.7 | 2.1-2.6 | 1.5-2.0 | 0.04 | 0.11-0.17 | - | ≤0.12 | ≤0.15 | |
| 7150 | 5.9-6.9 | 2.0-2.7 | 1.9-2.5 | 0.04 | 0.08-0.15 | - | ≤0.10 | ≤0.15 | |
| 7055 | 7.6-8.4 | 1.8-2.3 | 2.0-2.6 | 0.04 | 0.08-0.15 | - | ≤0.10 | ≤0.15 |
| Product Type | Alloy | Temper | Thickness (mm) | Width (mm) |
|---|---|---|---|---|
| Alu Sheet | 7075, 7475 | T6, T73, T76, T74 | 0.5-3.5 | 800-2600 |
| Alu Sheet | 7050, 7B50 | T6, T73, T76, T74 | 3.5-6.0 | 800-2900 |
| Alu Plate | 7075, 7475 | T651, T7351, T7651, T7451 | 6-12 | 800-2900 |
| Alu Plate | 7050, 7B50, 7A55 | T651, T7351, T7651, T7451 | 12-250 | 800-3800 |
| Alloy | Temper | Typical Thickness | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) | Standard |
|---|---|---|---|---|---|---|
| 7075 | T651 | 6.0-225.0 | 570 | 495 | 10 | SAE AMS 4045 |
| 7475 | T7651 | 6.0-50.0 | 510 | 435 | 10 | SAE AMS 4089 |
| 7050 | T7451 | 6.0-225.0 | 530 | 460 | 10 | SAE AMS 4050 |
| 7A55 | T7751 | 6.0-50.0 | 635 | 605 | 10 | - |
✔Primary structural components with high load requirements:
Manufacture of fuselage frames, bulkheads, wing skins, extrusion reinforcing rods, stringers and ribs, forging parts, gear support members, beams, strengthening panels, flanges, and critical joints.
