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 3A21 Materiales
3A21 is an Al-Mn-based alloy, which is an excellent rust military aluminum alloy material. 3A21 aluminum plate is a widely used anti-rust aluminum with low strength (only slightly higher than industrial pure aluminum) and cannot be strengthened by heat treatment. Therefore, cold processing methods are often used to improve its mechanical properties. It has high plasticity in annealed state, and it is still good when hardened semi-cooled work, low plasticity during hardening, good corrosion resistance, good welding, and poor cutting performance.
2. Chemical composition of 3A21
| 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 | 0.60 | 0.70 | 0.20 | 1.0-1.6 | 0.05 | – | 0.10 | 0.15 | Cada | total | margen | |||||||||||
| 3A21 | LF21 | 0.05 | 0.10 | ||||||||||||||||||||
3. 3A21 propiedades físicas
| 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) |
| 3a21-h112 | 120 | – | 16 | – | 2.75 |
Four: Applicable areas
3A21 is mainly used for welding parts such as aerospace, military equipment, tooling and fixtures, automobiles, transportation, propellant storage boxes, welded structural cabin skins, end frames, brackets and other welded parts, as well as conduits that work in corrosive media.
