2A12 aluminum plate and
6061 aluminum plate are both heat-treated aluminum alloy. After heat treatment, it is difficult to distinguish them from the appearance. The price difference between the two is huge, probably more than 10,000 yuan per ton, so many dealers on the market use
6061 aluminum plate to sale as 2A12 aluminum plate, how to identify the two is a problem for the user. So, how to distinguish 6061 and 2A12 aluminum plate?
First, the hardness:
6061 aluminum plate after heat treatment in the hardness of 90HB, while the 2A12 can reach 120HB near. The difference between the two hardness is large, if you have a measuring device, you can measure the hardness.
Second, the density: If you do not have a hardness meter, then there is a simple way, the difference between the two large density,
6061 aluminum plate density can only reach 2.7, and 2A12 due to high copper alloy content, density can reach 2.78-2.79. According to the weight of aluminum formula, we can calculate the density of the product.
Weight formula: Thickness (mm) * Density (2.7 / 2.78) * Length (m) * Width (m) = Weight
Look at the weight of the final product which one, so you can determine the aluminum model.
Third, if there is still doubt, you can find a third party detection, through the elemental analysis of the instrument analysis of the alloying elements, and then refer to the national standard alloy content, will be able to finalize