What is the hardness of aluminum alloy 7075 sheet?
7075 aluminum alloy belongs to Al Zn mg Cu superhard aluminum. It is called superhard aluminum because its hardness is very high, up to 150HB, which is close to that of many mild steels. 7075 aluminum plate generally adds a small amount of copper, chromium and other alloys. For this series of aluminum plates in different states, 7075-T651 aluminum alloy is particularly top-grade. It is known as the best product of aluminum alloy, with high strength and far better than any mild steel.
Characteristics of 7075 aluminum alloy
7075 is an aluminum alloy with zinc as the main alloy element, but sometimes a small amount of magnesium and copper are added. It has the hardness close to that of steel and can be strengthened by heat treatment. It is a high-strength and heat treatable alloy with ordinary corrosion resistance and good mechanical properties.
7075 tensile strength: 524mpa 0.2% yield strength: 455mpa hardness: 150HB density: 2.81g/cm ^ 3
If you want to know whether it is a real 7075 aluminum alloy, you can judge it this way
- 7075 aluminum alloy has high hardness, which is close to that of many mild steels. We can casually find a piece of mild steel and try to touch it from sharp corner to sharp corner. If the damage of the blade is similar to that of mild steel or the gap is not large, it can be basically judged.
- 7075 aluminum alloy has high zinc content, so its specific gravity is greater than that of general aluminum alloy. Because it contains more zinc, it can be burned with flame to see whether there is white smoke caused by zinc combustion.