Basic understanding of various sections of rust-proof aluminum

【China Aluminum Industry Net】 1.LF6 has high strength and corrosion resistance, and its plasticity is still good under annealing and extrusion conditions. The gas tightness and plasticity of the welding seam with argon arc welding are acceptable. Good machinability. For welding containers, stressed parts, aircraft skin and skeleton parts.

2. LF21 is a widely used rust-proof aluminum, its strength is not high, can not be heat-strengthening, there is a high plasticity in the annealed state, and good corrosion, good weldability, poor processing and processing. Used for manufacturing low load parts such as oil tanks, oil pipes, liquid containers, etc., which require high plasticity and good weldability and work in liquid or gaseous media. Rivets can be made from wire rods.

3.LF5-1 is a non-heat-treatable aluminum alloy that has a certain strength, good corrosion resistance, and good machinability. Anodized surface appearance, can be processed into optical mechanical parts, ship parts and wire clips.

4.LF13 has high corrosion resistance and good welding performance. The thermal conductivity and electrical conductivity are much lower than that of pure aluminum. It can be strengthened by cold deformation processing and cannot be strengthened by heat treatment. It is suitable for welding structural parts.

5. LF2 and LF3 have higher strength than LF21, high plasticity and corrosion resistance, no heat treatment, and good weldability (LF3 has better weldability than LF2). It has better machinability under cold hardening and can be polished. Used for the manufacture of medium strength welds, cold stamped parts, containers, etc. working in liquids.

6.LF5 and LF10 are aluminum-magnesium rust-proof aluminum (magnesium content of LF10 is slightly higher than LF5), strength is equal to that of LF3, heat treatment cannot be strengthened, plasticity in annealed state is high, semi-cold hardened plasticity medium, welding performance is still good, LF5 Used to make welded parts, pipes and containers and other parts that work in liquids. LF10 is mainly used to make rivets.

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