6061 aluminum coil is a continuous coiled sheet material based on 6061 aluminum alloy, processed through hot rolling or cold rolling. 6061 coil is widely used in industrial manufacturing, construction, transportation, electronics, and many other fields. As a representative of Al-Mg-Si series (6xxx series) heat-treatable aluminum alloys, 6061 aluminum coil is hailed as an "all-around" structural alloy material due to its excellent comprehensive performance, good processing adaptability, and high cost-effectiveness.
1. Chemical composition of 6061 aluminum coil
Aluminum (Al): 97.9%
Magnesium (Mg): 0.8–1.2%
Silicon (Si): 0.4–0.8%
Copper (Cu): 0.15–0.4%
Chromium (Cr): 0.04–0.35%
Others (Fe, Mn, Zn, etc.): Trace
2. Physical properties of 6061 aluminum coil
Density: 2.7 g/cm³, classifying it as a lightweight material.
Heat treatability: Strength can be significantly improved through solution treatment (T4, T6 temper) and aging treatment.
Corrosion resistance: A dense oxide film easily forms on the surface, resisting atmospheric and water corrosion, but pitting corrosion may occur when in contact with alkaline soils.
3. Mechanical properties of 6061 t6 aluminum coil:
Tensile strength: ≥310 MPa
Yield strength: ≥276 MPa
Elongation: 8–12% (depending on thickness)
Hardness: Approximately 95 HB (Britll hardness)
Density: 2.7 g/cm³
4. Specifications of 6061 aluminum coil:
Thickness range: 0.2 mm – 6 mm (thicker requires customization)
Width range: Up to 2500 mm (depending on equipment capacity)
Roll weight/inner diameter: Customized according to customer requirements (commonly used in continuous stamping, roll forming, etc.)
Tempers:
O temper (annealed): Low strength, high plasticity, easy to form.
T4 temper: Solution treated and naturally aged, moderate strength.
T6 temper: Solution treated and artificially aged, highest strength, commonly used for structural components.
T651 temper: Produced through heat treatment and pre-stretching process, no deformation after processing, dense and defect-free material.
5. Performance advantages of 6061 aluminum coil:
High strength-to-weight ratio: Suitable for load-bearing structural components.
Good corrosion resistance: Excellent performance in atmospheric environments (but not recommended for long-term use in marine environments).
Excellent weldability: Supports TIG/MIG welding (post-weld strength decreases, requiring re-heat treatment).
High machinability: Suitable for cutting, stamping, and bending (annealing before forming is recommended to improve plasticity).
Various surface treatments: Anodizing, spraying (e.g., PVDF), wire drawing, mirror finish, etc.
6. Application areas of 6061 aluminum coil:
Transportation:
Automotive Industry: Manufacturing wheel hubs, body panels, engine parts, radiators, etc., reducing weight and improving corrosion resistance.
Rail Transit: Used for interior and exterior wall panels, floors, and carriage panels of subway cars and high-speed buses, such as structural components for rail transit vehicles.
Shipbuilding: Hull frames, decks, accessories, etc., resisting seawater corrosion.
Aerospace:
Aircraft skin, fuselage frame, beams, rotors, propellers, etc., requiring high strength and lightweight.
Rocket forging rings, spacecraft wall panels, etc., adapted to extreme environments.
Electronics & Electrical Appliances:
Mobile phone casings, 3C product shells, electronic components, heat exchangers, heat sinks, etc., utilizing their electrical conductivity and heat dissipation properties.
Electrical fixtures, structural components in the communications field, such as base station brackets, antenna housings.
Architectural Decoration:
Curtain wall aluminum panels, profiled panels, patterned panels, color-coated aluminum panels, etc., used for building frames, doors, windows, ceilings.
Decorative facing materials, such as aluminum curtain wall panels, replacing glass in curtain walls, providing sound insulation and heat preservation functions.
Other Fields:
Packaging Industry: All-aluminum can filling material, packaging foil, used for food, cosmetics, and pharmaceutical packaging.
Printing Industry: Production of PS plates (aluminum-based printing plates), used for automated plate making and printing.
Mold Manufacturing: Precision machining molds, SMT solder carriers, etc., utilizing their high precision and wear resistance.
7. Processing and storage recommendations of 6061 aluminum coil
Bending: T6 state is brittle; the recommended minimum bending radius is approximately twice the plate thickness.
Cutting: Laser cutting, water jet cutting, or shearing machines can be used; pay attention to burr control.
Storage: Keep dry and avoid interlayer scratches; upright storage is recommended to prevent deformation.
