3A22 aluminum coil is an aluminum–manganese alloy in the 3000 series. It offers good corrosion resistance, moderate strength, and excellent formability, making it suitable for construction, transportation, and industrial applications. 3A22 is widely used in environments that require durable, corrosion-resistant panels and components.
Description
Yutwin New Materials specializes in the production of aluminum coils and sheets 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
- Aluminum–manganese–magnesium alloy (Al–Mn–Mg)
Belongs to the 3xxx-series aluminum alloys, with manganese and magnesium as main alloying elements, providing higher mechanical strength than 3xxx-series Al–Mn alloys.
- Medium to high mechanical strength
Stronger than 3003 and 3A21, suitable for automotive panels, structural, and load-bearing applications.
- Excellent corrosion resistance
Resistant to atmospheric, marine, and industrial environments, ideal for outdoor, coastal, and automotive applications.
- Good formability and workability
Can be rolled, bent, stamped, and deep-drawn, suitable for medium to thin-gauge processing and complex shapes.
- Good thermal and electrical conductivity
Supports heat dissipation and moderate electrical applications.
- Smooth and uniform surface finish
Suitable for anodizing, painting, coating, embossing, or film lamination for decorative and functional purposes.
- Good weldability
Compatible with TIG, MIG, and spot welding for reliable fabrication.
- Lightweight material
Low density supports weight reduction while maintaining strength and durability.
Specifications
| Item | Specification |
|---|---|
| Alloy / Grade | 3A22 |
| Chemical Composition (%) | Al ≥ 96.8, Mn 1.0–1.5, Fe ≤ 0.7, Si ≤ 0.6, Cu ≤ 0.1, Mg ≤ 0.2, Zn ≤ 0.25, Ti ≤ 0.15, Others ≤ 0.05 |
| Series | 3000 Series (Al-Mn Alloy) |
| Temper | O, H14, H16, H18, H19, H22 |
| Thickness (mm) | 0.2 – 250 |
| Width (mm) | 100 – 2650 |
| Length (mm) | 1000 – 12000 (Customizable) |
| Surface Finish | Mill Finish, Anodized, Painted |
| Standard | GB/T 3880, ASTM B209, EN AW-3A22 |
Common Aluminum Surface Treatments
Pulido
El pulido emplea métodos de abrasión mecánica, químicos o electroquímicos para mejorar la lisura y el brillo de las superficies de aluminio. El aluminio pulido presenta un acabado de alto brillo y una excelente apariencia decorativa.
Cepillada
El cepillado es un proceso de tratamiento superficial que crea texturas finas y direccionales en el aluminio mediante el uso de bandas abrasivas o cepillos. La superficie cepillada ofrece un aspecto metálico refinado a la vez que ayuda a disimular los arañazos leves.
Revestimiento
El proceso de recubrimiento aplica una capa protectora sobre la superficie de aluminio mediante técnicas como el recubrimiento en polvo, la pulverización de pintura líquida u otros métodos. Este acabado proporciona una excelente resistencia a la intemperie, protección contra la corrosión y una amplia variedad de opciones de color. El aluminio recubierto combina un atractivo estético con una gran durabilidad a largo plazo.
Anodizado
El anodizado es un proceso electroquímico que forma una capa densa de óxido en la superficie del aluminio, mejorando la resistencia a la corrosión, la resistencia al desgaste y la dureza superficial. La capa de óxido también puede teñirse para lograr diversos acabados.
Chorro de arena
El granallado con arena utiliza partículas abrasivas a alta velocidad que impactan contra la superficie de aluminio, creando una textura mate uniforme. Este proceso proporciona un aspecto metálico suave, reduce las marcas de huellas dactilares y mejora la adherencia del recubrimiento para los procesos de acabado posteriores.
Realce
El estampado es un proceso que forma patrones elevados o empotrados en superficies de aluminio mediante laminado o estampado. Los patrones comunes incluyen texturas de estuco, diamantes y vetas de madera. El aluminio repujado ofrece excelentes efectos decorativos, resistencia al rayado y ciertas propiedades antideslizantes.
Applications
- Automotive body panels
Widely used in car doors, roofs, hoods, and other vehicle body components due to good mechanical strength, corrosion resistance, and lightweight properties.
- Architectural and building applications
Suitable for roofing, wall cladding, ceiling panels, curtain walls, and decorative sheets in both interior and exterior environments.
- Transportation and railway components
Applied in truck panels, train interiors, and other lightweight transport structures where medium-to-high strength and corrosion resistance are required.
- Heat transfer and thermal applications
Used in heat exchangers, cooling fins, and other components requiring effective thermal conductivity.
- Chemical and industrial equipment
Suitable for tanks, containers, covers, and protective panels in mild chemical and industrial environments.
- General fabrication and forming
Ideal for stamping, bending, rolling, and deep-drawing of medium-thickness sheets and structural or decorative components.
