Both 7050 and 7075 are high-strength aluminum alloys that are extensively utilized in the mold manufacturing, aerospace, and defense industries due to their exceptional strength, toughness, and resistance to corrosion.
Although 7075 aluminum is stronger and harder than 7050 aluminum, it is not as good at being machined or resistant to corrosion. 7075 is prone to stress corrosion, and as the temperature drops, its toughness diminishes.
In order to improve corrosion resistance, a thin coating of pure aluminum is frequently added to the outside of 7075 aluminum sheets.
7-Major-Differences-Between-7050-Aluminum-VS-7075-Aluminum.pdf
Differences between 7050VS7075 standards and certifications
Both 7050 and 7075 aluminum alloys meet the following standards: ASTM B-211, AMS 4122, AMS 4123, AMS 4124, AMS 4167, AMS 4169, QQ-A-200/11, QQ-A-225/9, AMS-QQA-225/9, US standards AMS 4041/4130, Chinese standard GB/T 3190, and international standard ISO 6324.
The Department of Defense (DoD) in the United States, the European Aviation Safety Agency (EASA), the Aviation Industry Corporation of China (AVIC), and the National Aeronautics and Space Administration (NASA) are just a few of the organizations that have certified them. As a result, these two aluminum alloys are both appropriate for a variety of uses in the aerospace, defense, and associated industries, and there are no notable differences between them in terms of standards and certifications.
Different Chemical Compositions
| Chemical element | 7050 | 7075 |
| Si | 0.12 | 0.40 |
| Fe | 0.15 | 0.50 |
| Cu | 2.0-2.6 | 1.2-2.0 |
| Mn | 0.10 | 0.30 |
| Mg | 1.9-2.6 | 2.1-2.9 |
| Cr | 0.04 | 0.18-0.28 |
| Zn | 5.7-6.7 | 5.1-6.1 |
| Ti | 0.06 | 0.20 |
| Zr | 0.08-0.15 | - |
| Other (Each) | 0.05 | 0.05 |
| Other (total) | 0.15 | 0.15 |
| Aluminium (Al) | Remainder | Remainder |
Different Common Tempers
| 7050 aluminum | T73511 | T7351 | T6 | T3651 | T74 | T73651 | T7651 | - | - | - |
| 7075 aluminum | T6 | T651 | T7451 | T76 | T7651 | T73 | T7351 | O | T62 | T652 |
A unique state of 7075 aluminum alloy, 7075 T7451, is produced via artificial aging and offers increased hardness and strength.
A common heat treatment condition for 7050 aluminum alloy is 7050 T6, which is attained via aging and solution heat treatment. The alloy acquires its characteristics after 16 hours of solution heat treatment at (120 ± 5) °C and quick cooling at room temperature.
Through solution heat treatment, aging therapy, and extra artificial aging treatment, 7050 T7351 is an over-aged condition of 7050 T6. The alloy achieves its properties after a 16-hour solution heat treatment at (120 ± 5) °C, a quick cooling to room temperature, and aging at (165 ± 10) °C for 6 hours, followed by a quick cooling to room temperature.
Differences in Mechanical Properties
| Performance | 7050 | 7075 |
| Tensile strength (MPa) | 500-570 | 570-620 |
| Yield strength (MPa) | 370-450 | 490-550 |
| Elongation percentage (%) | 12-16 | 10-12 |
| Hardness (Brinell) | 130-140 | 150-160 |
| Elastic modulus (GPa) | 70-73 | 71-73 |
Differences in Corrosion Resistance
Good corrosion resistance is exhibited by both 7050 and 7075, which can endure erosion from seawater, ambient conditions, and other chemical agents. Compared to 7075, 7050 exhibits marginally superior stress corrosion resistance.
Differences in Processing Capabilities
Good processing properties enable forming, welding, and machining operations for both 7050 and 7075.
Differences in Applications
7050 Aluminum
Aircraft structural components
Aerospace parts
Automotive components
Mold manufacturing
Pressure vessels
7075 Aluminum
Aircraft skins
Engine components
Rocket parts
Sports equipment
Tools and molds
Price Differences
Although 7050 and 7075 prices vary, they have been growing recently, mostly as a result of increased demand and rising raw material costs. It is anticipated that costs will keep growing steadily in the future.
Aluminum Source
The thickness of the 7075 and 7075 aluminum sheets that GNEE offers ranges from 0.25 to 8 inches.
Our main board sizes are typically 48.5 inches or 60.5 inches wide, with each length measuring 144.5 inches. The majority of our 7075-T651 aluminum sheets meet ASTM B209, QQA 250/12, and AMS 4045 requirements.
Any bendable aluminum alloy, including 7050 aluminum sheets, can have its sawing tolerance controlled to within ±0.005 inches.
