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2 a12 aluminum alloy
2A12 aluminum alloy is a kind of high strength duralumin, which can be strengthened by heat treatment. Spot welding of 2A12 aluminum alloy has good weldability and tends to form intergranular cracks when gas welding and argon arc welding are used. The machinability of 2A12 aluminum alloy is good after cold working hardening. Corrosion resistance is not high, often using anodic oxidation treatment and paint method or surface coated with aluminum layer to improve corrosion resistance.
Mechanical properties:
2A12 aluminum alloy mechanical properties:
Xiang Xiaonote: Longitudinal mechanical properties of bar at room temperature
Sample size: bar diameter (square bar, hexagonal bar inner circle diameter)≤22
Chemical composition:
● Chemical composition:
Aluminum Al: allowance
Si Si: 0.50 or less
Copper Cu: 3.8 ~ 4.9
Magnesium Mg: 1.2 ~ 1.8
Zinc and zinc: 0.30 or less
Mn: 0.30 ~ 0.9
Ti Ti: 0.15 or less
Ni Ni: 0.10 or less
Iron Fe: 0.000 ~ 0.500
Fe+Ni Fe+Ni: 0.000 ~ 0.500
Note: Single :≤0.05; Total: 0.10 or less
Heat treatment:
2A12 Aluminum alloy heat treatment specification:
1) Homogenizing annealing: heating 480 ~ 495℃; Keep warm for 12-14h; Furnace cooling.
2) Complete annealing: heating 390 ~ 430℃; Holding time 30-120min; The furnace is cooled to 300℃ and air-cooled.
3) Rapid annealing: heating 350 ~ 370℃; The holding time is 30 ~ 120min. Air cooling.
4) Quenching and aging: quenching 495 ~ 505℃, water cooling; Artificial aging 185 ~ 195℃,6 ~ 12h, air cooling; Natural aging: 96h at room temperature.
Feature USES
Standard: GB/T 3191-2010 instead of old GB/T 3191-1998,
● Features and scope of application:
2A12 aluminum alloy is a kind of high strength duralumin, which can be strengthened by heat treatment. Spot welding of 2A12 aluminum alloy has good weldability and tends to form intergranular cracks when gas welding and argon arc welding are used. 2A12 aluminum alloy has good machinability after cold working hardening. Corrosion resistance is not high, often using anodic oxidation treatment and paint method or surface coated with aluminum layer to improve corrosion resistance.
Low usage:
It is mainly used for making various high-load parts and components (but not including stamping parts and forgings), such as skeleton parts, skin, frame, wing ribs, wing beams, rivets and other working parts below 150℃.
Spot specification
2A12 Plate spot specification: 0.3mm-350mm(thickness) width: 500mm-2500mm
2A12 bar spot specification: 3.0mm-500mm(diameter) Length: 1m-6m
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