7A04
Description
Étendue de la fourniture du groupe Aviation :
Il peut être personnalisé hors norme, plaque d'aluminium (plaque entière/coupe), tige d'aluminium, pièces forgées en aluminium, tubes d'aluminium, profils d'aluminium, etc. N'hésitez pas à vous renseigner !
1. Introduction à la 7A04 Matériaux
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 composition chimique
| Médaille en alliage | silicium
Et |
fer
Fe |
cuivre
Cu |
manganèse
Mn |
magnésium
Mg |
chrome
Cr |
Zinc
Zn |
titane
De |
autres | aluminium
AL |
||
| Nouveau grade | Ancienne marque | 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 | Chaque | total | marge |
| 7a04 | LC4 | 0.05 | 0.10 | |||||||||
3. Physical properties and characteristics of 7A04
| Nuance et état de l'alliage d'aluminium | résistance à la traction
Rm/Mpa |
Rendement du rendement
Rp0,2/Mpa |
Élongation/% | Dureté/HBWα | densité
(20 ℃) (g / cm3) |
| 7a04-T6 | 490 | 410 | 7 | 150 | 2.9 |
IV. 7A04 champs d'application
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.
