Descripción
Alcance del suministro de Aviation Group:
Puede ser personalizado no estándar, placa de aluminio (placa entera / corte), varilla de aluminio, piezas forjadas de aluminio, tubos de aluminio, perfiles de aluminio, etc. No dude en consultarnos.
1. Introducción 7A04 Materiales
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 composición química
| Medalla de aleación | silicio
Y |
hierro
Fe |
cobre
Cu |
manganeso
Mn |
magnesio
Mg |
cromo
Cr |
Zinc
Zn |
titanio
De |
otros | aluminio
AL |
||
| Nuevo grado | Marca antigua | 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 | Cada | total | margen |
| 7a04 | LC4 | 0.05 | 0.10 | |||||||||
3. Propiedades físicas y características of 7A04
| Grado y estado de la aleación de aluminio | resistencia a la tracción
Rm/Mpa |
Rendimiento
Rp0,2/Mpa |
Elongación/% | Dureza/HBWα | densidad
(20 ℃) (g / cm3) |
| 7a04-T6 | 490 | 410 | 7 | 150 | 2.9 |
IV. 7A04 campos de aplicación
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.
