2A11 aluminum alloy is the earliest hard aluminum used, generally called standard hard aluminum, with medium strength. It has good plasticity in annealing, quenching and hot state. It can be heat-treated and strengthened. It can be used in quenching and natural aging conditions. The weldability is good, and there is a tendency to crack when performing gas welding and argon arc welding; the cutting is good in the quenching aging state and is poor in the annealing state.
2A11 aluminum extruded square bar
Common Temper:T4,H112
检测项目
Inspec. Item |
Fe |
Cu |
Mg |
Mn |
Si |
Zn |
Cr |
Al |
|
Standard Value |
0.0-0.7 |
3.8-4.8 |
0.4-0.8 |
0.10 |
≤0.7 |
≤0.3 |
0.15-0.35 |
Remain |
|
机械性能PHYSICAL and MECHANICAL PROPERTIES |
检测项目
Inspec. Item |
抗拉强度Rm
(Mpa)
Tensile Strength |
屈服强度Rp0.2
(Mpa)
Yield Strength |
延伸率
（%）
Elongation |
|
Standard Value |
≥370 |
≥215 |
≥12 |
|
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Heat treatment process
1) Homogenization annealing: heating 480 ~ 495 ° C; holding 12 ~ 14h; furnace cooling.
2) Complete annealing: heating 390 ~ 430 ° C; holding time 30 ~ 120min; air cooling.
3) Rapid annealing: heating 350 ~ 370 ° C; holding time is 30 ~ 120min; air cooling.
4) Quenching and aging: quenching 495 ~ 510 ° C, water cooling; artificial aging 155 ~ 165 ° C, 6 ~ 10h, air cooling; natural aging: room temperature 96h.
