2A11 aluminum sheet is a heat-treatable aluminum–copper–magnesium alloy in the 2xxx series. It offers high strength, good fatigue resistance, and excellent machinability, and is widely used in aerospace, aviation, and mechanical manufacturing industries. 2A11 is similar to 2024 aluminum alloy in performance and is often selected for structural components requiring high strength and reliability.
Description
Yutwin New Materials specializes in the production of aluminum sheets and coils in a wide range of alloys, grades, and specifications, offering stable quality, flexible customization, and reliable supply to meet the diverse needs of different industries.
Features
- High Mechanical Strength
Provides high strength after heat treatment, suitable for load-bearing and structural applications.
- Good Fatigue Resistance
Maintains stable performance under repeated stress and vibration, making it suitable for dynamic and cyclic loading conditions.
- Excellent Machinability
Easy to machine, drill, and mill with good dimensional accuracy and surface quality.
- Heat Treatable Alloy
Mechanical properties can be significantly enhanced through solution heat treatment and artificial aging.
- Mature and Reliable Alloy
A well-established alloy widely used in aerospace and industrial applications with proven long-term performance.
Specifications
| Item | Specification |
|---|---|
| Alloy / Grade | 2A11 |
| 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, 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) |
Common Aluminum Surface Treatments
Polishing
Polishing uses mechanical grinding, chemical, or electrochemical methods to improve the smoothness and brightness of aluminum surfaces. Polished aluminum features a high-gloss finish and excellent decorative appearance.
Brushing
Brushing is a surface treatment process that creates fine, directional textures on aluminum using abrasive belts or brushes. The brushed surface provides a refined metallic appearance while helping conceal minor scratches.
Coating
Coating applies a protective coating onto the aluminum surface through powder coating, liquid spraying, or other coating methods. It provides excellent weather resistance, corrosion protection, and a wide range of color options. Coated aluminum offers both decorative appeal and long-term durabilit.
Anodizing
Anodizing is an electrochemical process that forms a dense oxide layer on the aluminum surface, improving corrosion resistance, wear resistance, and surface hardness. The oxide layer can also be colored to achieve various finishes.
Sand Blasting
Sand blasting uses high-speed abrasive particles to impact the aluminum surface, creating a uniform matte texture. This process provides a soft metallic appearance, reduces fingerprint marks, and improves coating adhesion for subsequent finishing processes.
Embossing
Embossing is a process that forms raised or recessed patterns on aluminum surfaces through rolling or stamping. Common patterns include stucco, diamond, and wood grain textures. Embossed aluminum offers excellent decorative effects, scratch resistance, and certain anti-slip properties.
Applications
- Aircraft and aerospace structural components.
- Aviation fittings and connectors.
- High-strength mechanical parts.
- Military and defense equipment.
- Precision engineering components.
