2A12 2a12 aluminum Features Uses standard: GB / T 3191-2010 instead of the old GB / T 3191-1998, ● Features and Scope: 2A12 aluminum [1] is a high-strength aluminum hard, can be heat strengthened. 2A12 aluminum spot welding is good, there is a tendency among the formation of intergranular cracks when using gas welding and welding;, 2A12 aluminum alloy after cold hardening cutting is still good. Corrosion resistance is not high, often with anodized and painted or surface plus clad layer method to improve corrosion resistance. ● Use: Mainly used in the production of high-load of parts and components (but not including stamping forgings) aircraft parts such as skeleton, skin, bulkheads, wing ribs, spars, rivets and other working parts below 150 ℃ . ● Chemical Composition: Aluminium Al: margin silicon Si: ≤0.50 copper Cu: 3.8 ~ 4.9 Mg Mg: 1.2 ~ 1.8 Zinc Zn: ≤0.30 Manganese Mn: 0.30 ~ 0.9 Titanium Ti: ≤0.15 Ni-Ni: ≤0.10 iron Fe: 0.000 to 0.500 Fe + Ni-Fe + Ni: 0.000 ~ 0.500 Note: Single: ≤0.05; Total: ≤0.10 2A12 aluminum alloy mechanical properties: Tensile strength σb (MPa): ≥410 Conditions yield strength σ0.2 (MPa): ≥265 Elongation δ5 (%): ≥12 Note: longitudinal bars at room temperature mechanical properties of the sample size: bar diameter (square bar, hexagonal bar inscribed circle diameter) ≤22 Heat treatment 2A12 aluminum heat treatment specifications: 1) homogenization: heating 480 ~ 495 ℃; holding 12 ~ 14h; furnace cooling. 2) complete annealing: heating 390 ~ 430 ℃; holding time 30 ~ 120min; furnace cooling to 300 ℃, air cooling. 3) rapid thermal annealing: heating 350 ~ 370 ℃; holding time 30 ~ 120min; air cooling. 4) quenching and aging [1]: quenching 495 ~ 505 ℃, water-cooled; artificial aging 185 ~ 195 ℃, 6 ~ 12h, air-cooled; natural aging: room temperature 96h. Spot size 2A12 sheet spot size: 0.3mm-350mm (thickness) Width: 500mm-2500mm 2A12 bar spot size: 3.0mm-500mm (diameter) Length: 1m-6m 2A12 wire spot size: 0.1mm-20mm (diameter) Length: Any 5082 Aluminum 5082 aluminum belong Al-Mg-Si alloy, using a wide range, especially in the construction industry can not do without this alloy is the most promising alloys. Good corrosion resistance, weldability, cold is better, and with moderate intensity. 5082 is the main alloying elements of magnesium, has good forming properties, corrosion resistance, weldability, moderate intensity, for the manufacture of fuel tanks, pipelines, meters, street lights bracket, hardware, electrical appliances, such as Shell. AL-Mn alloy, is the most widely used as a rust-proof aluminum, high strength of this alloy, especially those with fatigue strength: high ductility and corrosion resistance can not be heat strengthened, in the semi-cold hardening plastic is still good When the plastic work hardening is low, good corrosion resistance, good weldability, machinability can not be polished. Mainly used for high plasticity and good weldability, working in a liquid or gaseous medium low load parts, such as fuel tanks, gasoline or oil conduit, with a variety of liquid containers and other small loads produced by deep drawing parts 5082 Aluminum Material Name: Wrought aluminum and aluminum alloy grades: 5082 ● Properties and Applications: 5082 aluminum alloy, aluminum and aluminum alloy deformed the United States. 5082 and 5083 are similar strength aluminum alloy, formability, good corrosion resistance. Standard control: American Aluminum Association (AA) 5082, UNS A95082; China GB 5082 ● chemical composition: aluminum Al (minimum): margin silicon Si: ≤0.20 iron Fe: ≤0.35 copper Cu: ≤0.15 Mn Mn: ≤ Other elements ≤0.10 unspecified:: 0.15 Mg Mg: 4.0 ~ 5.0 chromium Cr: ≤0.15 Zinc Zn: ≤0.25 titanium Ti each: ≤0.05; Total: ≤0.15