2A12 aluminum sheet is a heat-treatable aluminum–copper–magnesium alloy in the 2xxx series. It is widely used in aerospace and high-strength structural applications due to its high strength, good fatigue resistance, and reliable overall performance. 2A12 is considered the Chinese standard equivalent to 2024 aluminum alloy and is commonly selected for critical load-bearing components.
Specifications
| Item | Specification |
|---|---|
| Alloy / Grade | 2A12 |
| Chemical Composition (%) | Cu 3.8–4.9, Mg 1.2–1.8, Mn 0.3–0.9, Fe ≤ 0.50, Si ≤ 0.50, Zn ≤ 0.30, Ti ≤ 0.15, Al Balance |
| Series | 2000 Series (Al-Cu-Mg) |
| Temper | O, T3, T4, T6 |
| Thickness (mm) | 0.5 – 200 |
| Width (mm) | 100 – 2600 |
| Length (mm) | 2000 – 6000 |
| Surface Finish | Mill Finish, Alclad, Anodized, Painted |
| Standard | GB/T 3880, ASTM B209 (Equivalent to 2024) |
Description
Features
- High Mechanical Strength
Provides high strength after heat treatment, making it suitable for structural and load-bearing applications.
- Good Fatigue Resistance
Maintains stable performance under cyclic loading and vibration, ideal for aerospace and transportation components.
- Good Machinability
Supports machining, drilling, and milling with good surface quality and dimensional accuracy.
- Heat Treatable Alloy
Mechanical properties can be significantly enhanced through solution heat treatment and artificial aging.
- Widely Used and Proven Alloy
A mature alloy with extensive application history in aviation, aerospace, and industrial fields.
Applications
- Aircraft structures and fuselage panels.
- Aerospace and aviation components.
- High-strength mechanical and structural parts.
- Military and defense equipment.
- Precision engineering components.
