Aluminum Coil

What is Aluminum Coil?

Aluminum coil refers to aluminum or aluminum alloy ingots that are cast from molten aluminum through the rolling process, and then processed by hot rolling or cold rolling into coiled aluminum materials. It features uniform thickness, smooth surface, and flexible length cutting, serving as the mother material form for aluminum sheets, strips, and foils.

Aluminum coil is a continuous rolled material made through the rolling process, using aluminum or aluminum alloy as the main material. It is characterized by light weight, corrosion resistance, and recyclability, and is widely used in construction, packaging, automotive, electronics, and other fields.

Aluminum Coil Specifications

Aluminum Coil Classification

Aluminum coil classification according to different alloy elements

According to the different metal elements contained in aluminum coils, aluminum coils can be roughly divided into 9 major categories, that is, they can be divided into 9 series

• 1000 Series: 1050, 1060, 1100 aluminum coils/strips, with excellent corrosion resistance, conductivity, and processing performance but relatively low strength, used in general industry and packaging.
• 3000 Series: 3003, 3004, 3104, 3105, 3005 aluminum coils/strips, with medium strength and good corrosion resistance, commonly used in air conditioners, refrigerators, and the most widely applied.
• 5000 Series: 5052, 5083, 5005, 5754, 5182 aluminum coils/strips, with higher strength and excellent corrosion resistance, especially seawater resistance.
• 8000 Series: 8021, 8079, 8006 aluminum foil coils, with high strength, good ductility, and barrier properties, suitable for food and pharmaceutical packaging.

• 1000 series aluminum coil

  These aluminum coils are mainly pure aluminum products containing aluminum, such as 1100 aluminum coils, which have higher purity and are usually used in food packaging, chemical processing equipment, etc.

  1060 Aluminum Coil 1050 Aluminum Coil 1100 Aluminum Coil

• 2000 series aluminum coil

  These aluminum coils are usually aluminum products containing copper alloys, such as 2024 and 2014 aluminum coils, which have higher strength and are often used in the aerospace field.

• 3000 series aluminum coil

  These aluminum coils are usually aluminum products containing manganese, such as 3003 and 3004 aluminum coils, which have good corrosion resistance and are often used to be processed into containers, pipes, etc.

  3003 Aluminum Coil 36 wide aluminum coil 3105 Aluminum Coil 3005 Aluminium Coil 3004 Aluminum Coil

• 4000 series aluminum coil

  These aluminum coils are usually silicon-containing aluminum products, such as 4047 aluminum coils, which have good fluidity and corrosion resistance and are suitable for welding and casting.

• 5000 series aluminum coil

  These aluminum coils are usually aluminum products containing magnesium, such as 5052 and 5083 aluminum coils, which have good corrosion resistance and weldability and are commonly used in shipbuilding, automotive parts, etc.

  5052 Aluminum Coil 5005 Aluminum Coil 5754 Aluminum Coil 5083 Aluminum Coil

• 6000 series aluminum coil

  These aluminum coils are usually aluminum products containing silicon and magnesium, such as 6061 and 6063 aluminum coils, which have good processability and strength and are often used in construction, mechanical parts, etc.

  6061 Aluminum Coil 6063 Aluminum Coil 6082 Aluminum Coil

• 7000 series aluminum coil

  These aluminum coils are usually aluminum products containing zinc, such as 7075 aluminum coils, which have very high strength and are often used in the aerospace field.

• 8000 series aluminum coil

  These aluminum coils are usually aluminum alloy composite materials, such as 8011 aluminum coils, which are commonly used in food packaging, pharmaceutical packaging, etc.

• 9000 series aluminum coil

  In some areas, this series may be used to refer to custom specifications or special purpose aluminum coils, and therefore may not have a unified meaning.

Aluminum coil classification according to the surface treatment process

• Mirror Aluminum Coil Mirror aluminum coil has a highly polished surface with reflective mirror effect, commonly used in decoration, lighting reflectors, and electronic product casings.
• Anodized Aluminum Coil Anodized aluminum coil has an anodized surface that provides excellent corrosion resistance and decorative finish, widely used in building facades, electronics, and decorative panels.
• Brushed Aluminum Coil Brushed aluminum coil features a regular brushed texture, combining metallic feel with aesthetic appeal, commonly used for home appliance panels, decorative wall panels, and furniture.
• Colored Aluminum Coil Colored aluminum coil has painted or coated surfaces with various color options, suitable for roofing, exterior walls, and signage.
• Embossed Aluminum Coil Embossed aluminum coil has patterned surface (e.g., diamond, orange peel), providing slip resistance and decorative effect, used in building decoration, packaging, and insulation.
• Mill Finish Aluminum Coil Mill finish aluminum coil has a natural rolled surface without extra treatment, retaining the original aluminum color, suitable for secondary processing or industrial applications.
• Painted Aluminum Coil Painted aluminum coil has a paint layer on the surface, offering both aesthetics and corrosion protection, commonly used in roofs, gutters, and exterior cladding.
• Polished Aluminum Coil Polished aluminum coil has a mechanically or chemically polished smooth surface, used for decoration, lighting, and signage.
• Coated Aluminum Coil Coated aluminum coil has a functional coating (e.g., anti-corrosion, heat-resistant), widely used in construction and industrial applications.
• PVDF Coated Aluminum Coil PVDF coated aluminum coil features a polyvinylidene fluoride coating, offering excellent weather resistance and corrosion protection, ideal for high-end building facades and roofing.
• PE Coated Aluminum Coil PE coated aluminum coil has a polyester coating, providing bright colors and cost-effectiveness, used for interior decoration and exterior walls.
• Lacquered Aluminum Coil Lacquered aluminum coil has a transparent or colored lacquer layer, enhancing gloss and corrosion resistance, suitable for decoration and packaging.
• Pre-coated Aluminum Coil Pre-coated aluminum coil comes with a factory-applied coating and can be used directly, commonly used in construction panels and home appliance panels.
• Pre-painted Aluminum Coil Pre-painted aluminum coil has a factory-painted surface with multiple color options, used for roofing, gutters, and curtain walls.
• Stucco Embossed Aluminum Coil Stucco embossed aluminum coil has a textured stucco pattern for decorative and anti-reflective effects, commonly used in insulation and decorative projects.
• Textured Aluminum Coil Textured aluminum coil has various surface textures (e.g., stone, leather), offering both aesthetic appeal and slip resistance, widely used for decoration and home appliances.
• Wood Aluminum Coil Wood aluminum coil has a wood grain finish, suitable for interior and exterior decoration, curtain walls, and windows, as a lightweight alternative to natural wood.
• Granite Coated Aluminum Coil Granite coated aluminum coil simulates granite texture, lightweight and durable, suitable for exterior wall decoration.
• Marble Finish Aluminum Coil Marble finish aluminum coil simulates marble appearance, providing a high-end natural look, used in architectural decoration and interior panels.
• Stone Grain Aluminum Coil Stone grain aluminum coil has a stone texture surface, decorative and durable, used for curtain walls and wall panels.
• Copper Coated Aluminum Coil Copper coated aluminum coil combines aluminum’s lightness with copper’s decorative appeal, used in architecture and decoration.
• Zinc Coated Aluminum Coil Zinc coated aluminum coil has a zinc layer to enhance corrosion resistance, suitable for outdoor roofing and industrial applications.
• Anti-slip Embossed Aluminum Coil Anti-slip embossed aluminum coil has raised patterns to prevent slipping, commonly used for flooring, steps, and platforms.
• Perforated Aluminum Coil Perforated aluminum coil has evenly spaced holes, offering ventilation and sound absorption, widely used for decoration, ceilings, and acoustic panels.
• PVC Coated Aluminum Coil PVC coated aluminum coil has a protective PVC film for waterproofing, corrosion resistance, and decoration, commonly used for exterior walls and roofing.
• PVC Coated Black Aluminum Trim Coil PVC coated black aluminum trim coil has a black PVC film, used for exterior wall trims and decorative lines.
• PVC Wood Grain Finish Aluminum Trim Coil PVC wood grain finish aluminum trim coil has a wood-pattern PVC film, used for window trims and exterior decoration lines.
• Heat Reflective Aluminum Coil Heat reflective aluminum coil has a reflective coating that reduces heat absorption, suitable for roofs and insulated walls.
• Aluminum Trim Coil Aluminum trim coil is used for building facades and roof trims, providing both decorative and protective functions.

Aluminum coils are classified according to processing technology

Cold rolled aluminum coil

• Processing technology: Processed by cold rolling process, that is, the aluminum billet is rolled at normal temperature to obtain the required size and surface quality.
• Features: It has high surface quality and relatively precise dimensions, smooth surface and high material hardness. It is suitable for applications requiring high precision and surface quality.
• Application: Commonly used in fields such as automotive parts, building materials, and electronic product casings that require high precision and surface quality.

Hot rolled aluminum coil

• Processing technology: Processed by hot rolling process, that is, the aluminum billet is rolled at high temperature to obtain the required shape and size.
• Features: It has high plasticity and ductility, and is easy to bend and form, but the surface quality is generally slightly worse than that of cold-rolled aluminum coils.
• Application: Suitable for applications that require bending, forming or large area coverage, such as pressing, deep drawing, etc.

Coated aluminum coil

• Processing technology: Apply a protective or functional coating on the surface of the aluminum coil. Common coatings include fluorocarbon coating, polyester coating, etc.
• Features: While protecting the surface of the aluminum coil, it can also give the aluminum coil other properties, such as corrosion resistance, wear resistance, etc.
• Application: Widely used in building materials, auto parts, home appliances and other fields to provide protection and aesthetic effects.

Aluminum coils classified by use

• Aluminum coils for construction: used in the construction industry such as roofs, walls, window frames, etc.
• Aluminum coil for packaging: used for food packaging, pharmaceutical packaging, etc.
• Aluminum coils for the electronics industry: used to manufacture electronic product casings, radiators, etc.
• Aluminum coils for transportation: used in the manufacture of automobiles, airplanes and other means of transportation.

Aluminum Coil Color Options

• 

  Blue aluminium sheet coil

• 

  Gray aluminum sheet coil

• 

  Violet aluminum sheet coil

• 

  Red aluminum sheet coil

• 

  Pink aluminum sheet coil

• 

  Brown aluminum sheet coil

• 

  Silver aluminum sheet coil

• 

  Golden aluminum sheet coil

• 

  Black aluminum mirror sheet coil

• 

  Copper aluminum coil

• Bright White PVC Aluminum Coil

• Bronze Aluminum Coil

• Brown Aluminum Coil

• Charcoal Gray Aluminum Coil

• Clay Aluminum Coil

• Dark Bronze Aluminum Coil

• Green Aluminum Coil

• Sandstone Aluminum Coil

• White PVC Aluminum Coil

• White Wood Grain Aluminum Coil

• Copper Aluminum Coil

Standard Aluminum Coil Sizes and Specifications

Aluminum Coil Properties

• Lightweight: with a density of only 2.7g/cm³, about 1/3 that of steel, significantly reducing transportation and installation costs.
• Corrosion Resistance: 3xxx series aluminum coils (such as 3003) contain manganese, suitable for humid environments; 5xxx aluminum-magnesium alloys (such as 5052) offer superior corrosion resistance, ideal for marine environments.
• Processability: supports cutting, bending, stamping, and other deep processing. Color-coated aluminum coils can also achieve wood grain, stone grain, and other surface effects through the roller coating process.

Aluminum Coil Applications

• Aluminum Insulation Coil Aluminum coil designed for thermal insulation applications, offering excellent corrosion resistance, lightweight properties, and easy handling for HVAC and building insulation projects.
• Aluminum Coil Stock for Gutters High-quality aluminum coil suitable for manufacturing rain gutters and drainage systems, resistant to corrosion and weathering.
• Aluminum Coil for Roofing Aluminum coil optimized for roofing sheets, providing durability, corrosion resistance, and lightweight construction for long-lasting roofing solutions.
• Aluminum Coil for Cans Aluminum coil used for beverage and food can bodies, featuring good formability, high corrosion resistance, and consistent surface quality.
• Aluminum Coil for Windows Aluminum coil suitable for window frames and sashes, offering ease of extrusion, high durability, and corrosion resistance.
• Aluminum Coil Siding Aluminum coil designed for exterior wall cladding and siding panels, providing excellent weather resistance and decorative finishes.
• Aluminum Coil Strip for Transformer High-conductivity aluminum coil strips used in transformer cores, ensuring excellent electrical performance and thermal stability.
• Aluminum Coil for Curtain Wall Aluminum coil for architectural curtain walls, offering corrosion resistance, lightweight structure, and aesthetic surface finishes.
• Aluminum Sheet Coil for Ceiling Panels Aluminum coil suitable for ceiling panels, providing easy fabrication, corrosion resistance, and decorative surface options.
• Aluminum Coil for Pipelines and Ducting Aluminum coil ideal for ductwork and pipelines, offering lightweight, corrosion-resistant, and easy-to-form properties.
• Aluminum Coil Strip for Blinds Aluminum coil strips designed for window blinds, combining lightweight, durability, and excellent surface finish.
• Aluminum Coil Strip for Automotive Trim Aluminum coil strips for automotive decorative trims, offering high formability, corrosion resistance, and premium surface appearance.
• Aluminum Coil for Cable Wrapping Aluminum coil used for cable wrapping and shielding, providing corrosion resistance, flexibility, and lightweight protection.
• Aluminum Coil for Appliances Aluminum coil for appliance housings such as refrigerators and microwaves, offering lightweight, corrosion-resistant, and easy-to-fabricate properties.
• Aluminum Coil Strip for Heat Exchangers High-performance aluminum coil strips for heat exchangers, featuring excellent thermal conductivity, corrosion resistance, and formability.
• Aluminum Coil Strip for Radiators Aluminum coil strips suitable for radiator manufacturing, providing lightweight, high heat transfer efficiency, and corrosion resistance.
• Aluminum Sheet Coil for Printing Plates Aluminum coil for printing plates (CTP/PS plates), offering smooth surface, precise thickness, and good printability.
• Aluminum Coil for LED Lighting Aluminum coil used in LED lighting components and housings, providing lightweight, corrosion resistance, and excellent thermal management.

Aluminum Coil Production Process

• Smelting and Casting: Aluminum ingots and other alloying elements (such as magnesium, silicon, manganese, etc.) are melted into alloy liquid in specific proportions, then cast into large rectangular slabs through a casting machine.
• Homogenization Treatment: The aluminum ingot is heated and kept at temperature to homogenize its internal chemical composition and microstructure, improving subsequent processing performance.
• Hot Rolling: The heated aluminum ingot is rolled at high temperatures, significantly reducing its thickness and forming thicker coils.
• Cold Rolling: The hot-rolled coil is further rolled at room temperature to achieve thinner thickness, higher precision, and superior surface quality.
• Annealing: During or after the cold rolling process, heating and cooling are applied to eliminate work hardening and adjust the material’s temper (such as O-temper, H-temper).
• Finishing and Slitting: Surface treatments (such as cleaning, coating) are performed, and the coils are slit to the customer’s required width, then rewound and packaged.

Aluminum Coil Purchasing and Storage Precautions

• Clarify Requirements: Accurately provide alloy, temper, thickness, width, and other core parameters as the first step of procurement.
• Surface Quality: Check whether the surface of the aluminum coil has scratches, roll marks, oil stains, oxidation spots, or other defects.
• Dimensional Accuracy: The tolerance of aluminum coil thickness and width should be within the range specified in the agreement.
• Storage Environment: Should be stored in a dry, ventilated warehouse free from corrosive gases to prevent moisture and oxidation. Vertical storage is recommended, with wooden pads underneath for support.
• Safe Operation: Aluminum coils are heavy with sharp edges. During lifting, handling, and unwinding/cutting, professional tools must be used, and strict safety procedures must be followed to prevent crushing and cuts.