3mm thick aluminum sheet price plate used aluminum is aluminum alloy, it is impossible to have pure aluminum. However, due to the different alloy content, the mechanical properties of aluminum alloy are also different. At present, aluminum alloy used as the price material of 3mm thick aluminum plate in China can be roughly divided into five grades:
Grade 1: Aluminum-magnesium alloy with some manganese. The advantage of this material is its high oxidation resistance. At the same time, due to the content of manganese, it has a certain strength and rigidity. It is the ideal material for making 3mm thick aluminum sheet.
The second grade: aluminum manganese alloy, its strength and hardness is slightly better than aluminum magnesium alloy. However, the antioxidant capacity is slightly lower than that of Al-Mg alloy. If both sides are protected, the oxidation resistance of the alloy is not as good as that of aluminum magnesium alloy.
The third grade: aluminum alloy, containing manganese, magnesium less. Therefore, its strength and stiffness are obviously lower than those of Al-Mg alloy and Al-Mn alloy. Because it is soft and easy to process, as long as it reaches a certain thickness, it can basically meet the basic flatness requirements of 3mm thick aluminum plate. However, its oxidation resistance is obviously inferior to that of Al-Mg alloy and Al-Mn alloy. Moreover, it is easy to deform during processing, transportation and installation.
Fourth grade: ordinary aluminum alloy, mechanical properties are unstable. Grade 5: The raw material of this plate is aluminum ingots smelted into aluminum plates by aluminum processing plants, and the chemical composition is completely uncontrolled. Due to the chemical composition is out of control, the properties of these materials are unstable, resulting in serious uneven product surface, product deformation, easy oxidation.
From the above classification of raw materials, we are not difficult to analyze the quality assurance of each 3mm thick aluminum plate after forming. Now many people think that the thicker the plate, the better. Through the analysis of the above raw materials, we can know that if the raw materials are the same, the thicker the plate, the better. However, if it is a five – level board, no matter how thick it is. On the other hand, in the surface treatment, some manufacturers of raw materials did not reach a certain thickness, but in order to pursue the concept of thickness, in the surface treatment of a layer of paint. Ordinary consumers can not have a good understanding of the raw material when buying aluminum buckle plate, so it is a simple way to feel the strength and hardness of aluminum plate by hand.