3A21 aluminum plate

3A21 aluminum plate (corresponding to the old Chinese designation LF21) is a typical aluminum-manganese type anti-rust aluminum alloy. It is a balanced-performing, cost-effective general-purpose anti-rust aluminum alloy. When your design primarily considers the material's forming processing performance, corrosion resistance, and welding convenience, while having a low requirement for absolute strength, it is a very reliable choice.

Main advantages and features:

Outstanding corrosion resistance: Excellent corrosion resistance in the atmosphere (including marine environment), fresh water, and various media. It is a typical example of "rust-proof aluminum".

Good welding performance: Can be welded using conventional processes such as argon arc welding and spot welding, with good weldability.

Poor machinability: Due to its soft texture and good toughness, it is prone to sticking to the cutting tool during machining, resulting in poor surface finish, and it belongs to a material with poor machinability.

Main application fields:

With its excellent comprehensive performance, 3A21 is widely used in scenarios that require formability, corrosion resistance and sealing properties: liquid containers and conduits: fuel tanks (aircraft, automobiles), lubrication conduits, chemical product containers, tanks, etc. Transportation: vehicle skins, ship structural components, radiator parts, etc.

Construction and decoration: building roofs, wall decoration panels, pipeline insulation outer layers, etc.

Electronics and general industry: electronic product casings, signs, light-duty rivets, food packaging equipment, etc.