6061-T651 aluminum is a high-strength, heat-treatable Al-Mg-Si alloy known for its excellent corrosion resistance and outstanding dimensional stability. Compared with standard 6061-T6, the T651 temper offers superior machinability and reduced distortion, making it ideal for precision-critical aerospace, marine, and structural applications. The "T651" designation indicates that the alloy has been solution heat-treated, artificially aged, and then stress-relieved by stretching, which minimizes internal stresses that can lead to warping during machining.
T651 (solution heat-treated, artificially aged, and stress-relieved by stretching)
High tensile and yield strength, similar to T6 but with improved stability
Excellent-better than T6 due to reduced internal stress
T6 vs. T651
6061-T6: Solution heat-treated and artificially aged, offering strong mechanical properties.
6061-T651: T6 performance plus stress relief through stretching, resulting in significantly better dimensional stability and reduced warping during machining, though typically at a slightly higher cost.
GNEE supplies high-quality 6061-T651 aluminum products designed for demanding applications requiring accuracy, consistency, and long-term reliability.
GNEE 6061-T651 aluminum plate conforms to AMS QQ-A-250/11, AMS 4027, and ASTM B209 standards.
6061 aluminum is a heat-treatable alloy containing approximately 1.0% magnesium and 0.6% silicon, known for its excellent corrosion resistance, formability, and weldability. GNEE 6061-T651 aluminum plate is widely used in engineering and structural applications, marine vessels, furniture, transportation equipment, and more.
The 6061-T651 aluminum plate typically comes with a mill finish. It is not polished, brushed, or supplied with protective PVC, as it is generally intended for functional rather than aesthetic purposes.
GNEE can provide shear or laser cutting services for 1/4" 6061-T651 aluminum plates. For 3/8" plates, laser cutting or full sheet supply is available.
