Anti-rust alloy sheet metal mainly includes aluminum-magnesium alloy and aluminum-manganese alloy, because the alloy components between the two increase their anti-corrosion performance. Such sheet metal alloys cannot be strengthened by heat treatment, so their strength is low. The main performance feature of this type of aluminum sheet alloy is its excellent corrosion resistance, so it is called anti-rust aluminum.
Anti-rust aluminum alloy sheet metal is generally used in the annealed or cold work hardened state. It has high plasticity, low strength, excellent corrosion resistance and welding performance, easy to process and form, and has good gloss and low temperature performance. It is suitable for manufacturing in corrosive environments. It is the most widely used aluminum alloy in welded structures for parts that are not subject to much stress.
The rust-proof aluminum sheet that cannot be heat treated and strengthened is mainly improved in strength and hardness by work hardening. After work hardening, different annealing temperatures are used to achieve the required strength and plasticity to meet different application requirements.
The representatives of aluminum-manganese aluminum sheet alloys are 3105, 3004, 3003 aluminum alloys, the first type of wire and other high conductivity requirements are used above. The second type is generally used on cans, and the last type is widely used, such as kitchen utensils, food and chemical products processing and storage devices, tanks and tanks for transporting liquid products, and various pressure vessels and pipes made of thin plates.
According to the level of magnesium content, aluminum-magnesium alloy sheet metal are: 5005 5252 5251 5050 5052 aluminum alloy, etc., which are respectively used in some industries with high anti-corrosion performance and high strength requirements, such as shipbuilding, containers and subway high-speed trains. In the atmosphere, water Pressure-workable aluminum alloy with good corrosion resistance in media such as oil and oil.