7075 introduction de la bobine d'aluminium
Alliage 7075 les bobines d'aluminium ont été et restent la norme de base avec un bon équilibre des propriétés requises pour les applications aérospatiales. 7075 l'aluminium fait partie des alliages les plus résistants disponibles et est utilisé dans les pièces fortement sollicitées. La résistance à la corrosion et l'usinabilité sont jugées acceptables, bien que l'ajout de chrome offre une bonne résistance à la fissuration par corrosion sous contrainte dans 7075 produits en tôle d'aluminium. As with alloy 2024, alliage 7075 is available in bare form or in clad to offer even further protection from corrosion.
It is characterized by good plasticity after solution treatment, especially good heat treatment strengthening effect, high strength below 150 “C, especially good low-temperature strength, poor welding performance and stress corrosion cracking tendency; it needs to be coated with aluminum or other protective treatment. Double aging can improve the ability of the alloy to resist stress corrosion cracking. The plasticity under annealing and just quenching is slightly lower than that under the same condition
2A12 in the sample state is slightly better than 7A04. The static fatigue, notch sensitivity and stress corrosion performance of the plate are better than 7A04.
This alloy has good mechanical properties and anodic reaction. It is a typical aviation aluminum.It is used to manufacture aircraft structures and other high stress structural parts requiring high strength and strong corrosion resistance, such as aircraft upper and lower wing wall panels, stringers, spacer frames, etc. it has good plasticity and heat resistance after solution treatment
The strengthening effect of treatment is particularly good. Those below 150 ° C have high strength, especially good low-temperature strength, poor welding performance, stress corrosion cracking tendency, and two-stage aging can improve the resistance to corrosion
SCC performance.
7075 aluminum coil alloy
7075 aluminum alloy plate for precision machining / mold 7xxx series is aluminum, zinc and magnesium alloy, one of the most powerful commercial alloys, with general corrosion resistance and mechanical properties. 7075 Al-Zn mg Cu superhard aluminum and 7075 alloy are ultra-high strength deformed aluminum alloys that have been used in aircraft manufacturing since the late 1940s and are still widely used in aviation industry.Among them, 7075t651 is particularly top-grade, which is known as the best aluminum alloy
7075 aluminum coil chemical composition:
| Silicium |
0.4 |
| Le fer |
0.5 |
| Cuivre |
1.2-2.0 |
| Manganèse |
0.3 |
| Magnésium |
2.1-2.9 |
| Chrome |
0.18-0.28 |
| Zinc |
5.1-6.1 |
| Titane |
0.2 |
| Les autres, chaque |
0.05 |
| Les autres, total |
0.15 |
| Balance, Aluminium |
7075 aluminum coil typical mechanical properties:
| Caractère |
Résistance à la traction |
Limite d'élasticité |
Élongation |
|---|
|
KSI |
KSI |
% |
| O (recuit) |
40 |
21 |
9-10 |
|---|
| T6 |
74-78 |
63-69 |
5-8 |
|---|
7075 aluminum coil applications
- Aircraft and aerospace structures
- Corrugated Aluminium Roof Panels
