5052 aluminum checker plate has good corrosion resistance, hardness and rust resistance. Usually used in special places, such as ships, cabins and other wet environment, this kind of aluminum plate has high hardness and certain bearing capacity. Aluminum-magnesium alloys also contain small amounts of manganese, chromium, beryllium, titanium, etc. Manganese in the alloy mainly forms MnAl6 except for a small amount of solid solution. The effect of chromium in 5052 aluminum plate is similar to that of manganese in that it improves the resistance to stress corrosion cracking, increases the strength of base metal and weld, and reduces the tendency of weld cracking, but its content generally does not exceed 0.35%.