7075 aluminum alloy is a cold - treated forging alloy, high strength, far better than mild steel. 7075 is one of the strongest alloys commercially available. Under heat treatment, can achieve very high strength characteristics. 7075 materials are generally added a small amount of copper, chromium and other alloys, the department of 7075-T651 aluminum alloy is particularly top grade, known as the best aluminum alloy products, high strength, far better than any mild steel. The alloy also has good mechanical properties and anode reaction.