7A04
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Description
Scope of supply of Aviation Group:
It can be customized non-standard, aluminum plate (whole plate/cut), aluminum rod, aluminum forgings, aluminum tubes, aluminum profiles, etc. Welcome to inquire!
1. Introduction to 7A04 Materials
7A04 belongs to Al-Zn-Mg-Cu superaluminum alloy, also known as superhard aluminum, which is a very mature alloy with a long-lasting and wide use among superhard aluminum. High strength, good heat treatment strengthening effect, medium plasticity in annealing and new quenching states; unlike hard aluminum, the corrosion resistance in artificial aging state is better than that in natural aging states, and the natural aging process is slow, and it takes 3 months to reach the peak of aging hardening. Therefore, the disadvantage of using 7A04 in quenching artificial aging state is that its structure stability is low, low low-frequency fatigue strength, and tends to have stress corrosion and rupture. The alloy has good point properties and good machinability after gas welding heat treatment, but poor machinability after annealing.
2. 7A04 chemical composition
| Alloy Medal | silicon
And |
iron
Fe |
copper
Cu |
manganese
Mn |
magnesium
Mg |
chromium
Cr |
Zinc
Zn |
titanium
Of |
other | aluminum
AL |
||
| New grade | Old brand | 0.5 | 0.5 | 1.4-2.0 | 0.2-0.6 | 1.8-2.8 | 0.1-0.25 | 5.7-7.0 | 0.10 | Each | total | margin |
| 7a04 | LC4 | 0.05 | 0.10 | |||||||||
3. Physical properties and characteristics of 7A04
| Aluminum alloy grade and status | tensile strength
Rm/Mpa |
Yield of yield
Rp0.2/Mpa |
Elongation/% | Hardness/HBWα | density
(20 ℃) (g / cm3) |
| 7a04-T6 | 490 | 410 | 7 | 150 | 2.9 |
IV. 7A04 application fields
7A04 is widely used in mold processing, mechanical equipment, tooling and fixtures, aerospace industry, blow molding (mold, ultrasonic plastic welding mold, golf ball head, shoe mold, paper mold, foam mold, wax removal mold, mechanical equipment, etc.
