GNEE 7075-T651 aluminum is a high-strength, zinc-based aluminum alloy recognized for its outstanding strength-to-weight ratio. It is widely used in aerospace, defense, and other high-performance applications where lightweight materials with exceptional strength are essential, such as aircraft frames, gears, and structural components.
7075-T651 aluminum plate is an excellent contender for most processing processes, with moderate corrosion resistance. It's a lightweight material with a semi-smooth surface and a dull mill finish, and it has one of the highest strength-to-weight ratios of any heat-treatable alloy. Aircraft, marine, motorsports, and commercial-grade parts are common applications for which parts are machined to end-user standards.
The T651 temper indicates that the material has undergone solution heat treatment, artificial aging, and stress relief by stretching. This process delivers excellent mechanical performance, improved dimensional stability, and good machinability, while providing moderate corrosion resistance.
CHEMICAL COMPOSITION |
|
| Element | Percentage |
| Al | 90 |
| Cr | 0.18 - 0.28 |
| Cu | 1.2 - 2 |
| Fe | 0.5 max |
| Mg | 2.1 - 2.9 |
| Mn | 0.3 max |
| Si | 0.4 max |
| Ti | 0.2 max |
| Zn | 5.1 - 6.1 |
| Zn + Ti | 0.25 max |
MECHANICAL INFORMATION |
||
| Imperial | Metric | |
| Density | 0.102 lb/in³ | 2.81 g/cc |
| Ultimate Tensile Strength | 83,000 psi | 572 MPa |
| Yield Tensile Strength | 73,000 psi | 503 MPa |
| Fatigue Strength | 23,000 psi | 159 MPa |
| Shear Strength | 48,000 psi | 331 MPa |
| Melting Point | 890 - 1,175°F | 477 - 635°C |
| Temper | T651 |
| Hardness Rockwell | B87 |
| Hardness Brinell | 150 |
Key Characteristics
High Strength: Comparable to steel in strength while remaining significantly lighter, with excellent tensile and yield properties.
Zinc-Based Alloy: Zinc is the main alloying element, combined with magnesium, copper, and chromium for enhanced performance.
Excellent Fatigue Resistance: Performs reliably under repeated stress, making it ideal for aerospace and dynamic load applications.
Good Machinability: Suitable for precision machining and tight tolerance components.
Moderate Corrosion Resistance: Offers reasonable corrosion protection, though it is not recommended for prolonged saltwater exposure.
Common Applications
Aircraft and aerospace structures, fittings, and critical components
High-stress mechanical parts such as gears, shafts, and sprockets
Bicycle components, rock-climbing equipment, and military hardware
Plastic mold tooling and related industrial applications
