Characteristics of GNEE 7075 Aluminum Plate
A heat-treatable alloy with exceptionally high strength
Excellent mechanical performance
Good overall usability
Easy to machine with strong wear resistance
7075 T7351 temper improves corrosion resistance and fracture toughness
Ideal for high-pressure and high-strength structural applications
7075 T651 Temper Explanation
The T651 temper indicates that the aluminum plate has undergone solution heat treatment, followed by stress relief through stretching and artificial aging. This treatment improves both mechanical strength and dimensional stability, making the material well suited for precision machining and demanding structural uses.
Typical Applications of GNEE 7075 Aluminum Plate
Aerospace Components: Aircraft structural parts, wings, and fuselage sections
Automotive Applications: High-performance and racing components, such as suspension parts
Marine Equipment: High-stress components used in boats and ships
Tooling: Dies, molds, jigs, and fixtures requiring high strength and dimensional accuracy
If you need additional technical details or application guidance for GNEE 7075 aluminum plate, feel free to ask.
GNEE 7075-T651 Processing Route
The GNEE 7075-T651 temper is produced by adding a controlled pre-stretching step to the standard T6 heat-treatment process.
Solution Heat Treatment and Artificial Aging
The initial stages of the T651 process are the same as those used for the T6 temper. The alloy first undergoes solution heat treatment to fully dissolve the alloying elements into the aluminum matrix. This is followed by artificial aging, during which strengthening precipitates form, providing the alloy with its characteristic high strength.
Pre-Stretching Treatment
After aging, the material is mechanically stretched to achieve a permanent elongation of approximately 1.5% to 3%. This pre-stretching step plays a critical role in relieving internal residual stresses generated during solution treatment and aging, resulting in a more uniform stress distribution throughout the material.
In addition, the stretching process influences the alloy's microstructure, making it more homogeneous and significantly enhancing dimensional stability during subsequent machining or service.
Residual Stress Control
Following prestretching, the internal residual stress level of GNEE 7075-T651 aluminum alloy is substantially reduced and can typically be maintained below 50 MPa. In contrast, 7075-T6 aluminum without pre-stretching may retain residual stresses as high as 200–300 MPa.
This effective stress reduction makes GNEE 7075-T651 particularly suitable for precision-machined components and high-performance structural applications where dimensional accuracy and stability are critical.
