The formability of 2618A aircraft aerospace grade aluminum plate sheet in the state, annealing and newly quenched state is relatively good, the heat treatment strengthening effect is significant, but the heat treatment process requirements are strict. The corrosion resistance is poor, but it can be effectively protected by covering with pure aluminum; it is easy to produce cracks during welding, but it can be welded or riveted by special technology.
2618A aircraft aerospace grade aluminum plate sheet
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Technical indexes of common 2618A aluminum alloy |
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|
Alloy |
Type |
Temper |
δ or d/mm |
σb/MPa |
σp 0.2/MPa |
δ/% |
KIC or KC/MPa |
Technical standard |
|||||
|
2618A |
Aluminum sheet |
T851 |
8～40 |
430 |
385 |
5 |
～ |
Z9-0411--1992 |
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|
>40～60 |
420 |
385 |
5 |
～ |
|||||||||
|
>60～80 |
420 |
380 |
5 |
||||||||||
|
>80～90 |
410 |
370 |
4 |
～ |
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|
2618A Welding property |
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|
Alloy |
Resistance welding |
Melting welding |
Argon arc welding |
Note |
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|
2618A |
The welding performance is unstable at a specific temperature, but the resistance welding is better. |
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|
Alloy |
Temper |
Aircraft types |
Application parts and typical parts |
|
2618A |
2618A aircraft aerospace grade aluminum plate sheet： T851 |
Concorde，Z9 |
Aircraft wing skin |
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