6061 aluminum and 7075 aluminum are both aluminum alloys with similar performance, but they are very different. 6061 aluminum belongs to the 6000 series aluminum alloy, while 7075 aluminum belongs to the 7000 series aluminum alloy. Of course, this is just the most basic difference.
Difference between 6061 and 7075 aluminum-composition
6061 is a 6 series alloy whose composition is aluminum, magnesium, silicon alloy, and 7075 belongs to the 7 series alloy, whose composition is aluminum, zinc, magnesium, copper alloy.
6061: Of the 6061 aluminum, 97.9% is aluminum, 1% is magnesium, 0.6% is silicon, and 0.28% copper and 0.2% chromium are added.
7075: In the 7075 aluminum alloy, the main aluminum and zinc metal elements account for 90% and 5.6%, respectively, the other is magnesium element 2.5%, copper accounts for 1.6%, chromium accounts for 0.23% and finally there are remaining Silicon, manganese, titanium and other metal elements.
Difference between 6061 and 7075 aluminum-hardness
The 6 series alloy aluminum plate belongs to hard aluminum, so does 6061 aluminum. The T651 temper hardness of 6061 aluminum is the highest. 7075 aluminum plate belongs to super hard aluminum, also called aviation aluminum. 7075-T651 aluminum alloy is particularly superior, known as the best product among aluminum alloys, with high strength and far better than any mild steel. This alloy also has good mechanical properties and anodic reaction. Hardness and strength are the main differences between the two.
Brinell hardness of 6061-T6 aluminum plate ≥95HB; Brinell hardness of 7075-T6 aluminum plate ≥150HB.
Difference between 6061 and 7075 aluminum-uses
6061 aluminum is used in various industrial structures that require a certain strength, weldability and high corrosion resistance, such as the manufacture of tubes, rods, trucks, tower buildings, ships, trams, furniture, mechanical parts, instrument processing, etc. Profiles and plates.
7075 aluminum is used in aviation fixtures, trucks, towers, ships, pipelines, and other areas where strength applications are required. Such as: aircraft parts, gears and shafts, fuse parts, instrument shafts and gears, missile parts, jump-in valve parts, turbines, keys, aircraft, aviation and defense applications.
Difference between 6061 and 7075 aluminum-price
Just as the price of 5/6 series aluminum alloy is higher than that of 1/3 alloy, because the performance and complexity of 7075 aluminum is higher than that of 6061 aluminum, the price is higher than it.