2A12 Aluminum Bar
2A12 aluminum alloy is a high-strength hard aluminum that can be strengthened by heat treatment; 2A12 aluminum alloy has good spot welding properties, and tends to form intergranular cracks when using gas welding and argon arc welding; 2A12 aluminum alloy has good machinability after cold hardening. The corrosion resistance is not high, and anodizing and painting methods or aluminum coating on the surface are often used to improve corrosion resistance.
| ●Chemical composition: |
| Aluminum Al: Residue |
| Silicon Si: ≤0.50 |
| Copper Cu: 3.8～4.9 |
| Magnesium Mg: 1.2～1.8 |
| Zinc Zn: ≤0.30 |
| Manganese Mn: 0.30～0.9 |
| Titanium Ti: ≤0.15 |
| Nickel Ni: ≤0.10 |
| Iron Fe: 0.000～ 0.500 |
| Iron + Nickel Fe+Ni: 0.000～ 0.500 |
| Note: Single: ≤0.05; Total: ≤0.10 |
It is mainly used to make various high-load parts and components (but not including stampings and forgings) such as aircraft skeleton parts, skins, bulkheads, wing ribs, wing spars, rivets and other working parts below 150°C.
