Color coated aluminum coil and sheet are prepainted aluminum products manufactured by applying organic coatings to pretreated aluminum substrates. Available in PE, HDP and PVDF coating systems for roofing, wall cladding, curtain walls, aluminum composite panels, ceilings, appliances, signage and decorative applications.
- Alloys: 1050, 1060, 1100, 3003, 3004, 3105, 5005, 5052, 8011
- Product Forms: Coil, Sheet, Strip and Cut-to-Length Panels
- Thickness: 0.20–6.00 mm
- Width: 50–2, 000 mm, subject to specification confirmation
- Coatings: PE, HDP, PVDF and Special Functional Coatings
- Custom RAL Colors, Matte, Gloss, Metallic, Wood Grain and Stone Grain
What Is Color Coated Aluminum?
Color coated aluminum, also known as prepainted aluminum coil or coated aluminum sheet, is a composite material made by applying one or more organic coating layers to a pretreated aluminum substrate through a continuous coil coating process.
The finished product combines aluminum’s low density, corrosion resistance, formability and recyclability with the decorative appearance and protective performance of organic coatings. Depending on the selected alloy and coating system, color coated aluminum can be used in architectural roofing, wall cladding, curtain wall panels, ceilings, household appliances, transportation, advertising, aluminum composite panels and industrial equipment.
The most suitable material is determined by the project environment, forming method, required service conditions, coating system, desired color, coating thickness, substrate thickness and corrosion-resistance requirement.
Continuous coil coating process for prepainted aluminum coil production.
Coating durability depends on the coating resin system, dry film thickness, UV exposure, humidity, salt exposure, industrial pollution, installation design, substrate selection and maintenance conditions.
Color Coated Aluminum Coil & Sheet Specifications
| Item | Available Specification | Notes |
| Product Form | Coil, Sheet, Slit Strip, Cut-to-Length Panel | Customized supply form may be available. |
| Alloy | 1050, 1060, 1100, 3003, 3004, 3105, 5005, 5052, 8011 | Select according to strength, corrosion resistance and forming requirements. |
| Temper | H14, H16, H18, H24, H26, H32, H34, O and customized tempers | Availability depends on alloy and thickness. |
| Thickness | 0.20–6.00 mm | Coil is commonly supplied in thinner gauges; sheet availability depends on material and processing. |
| Width | 50–2, 000 mm | Standard and maximum width depend on alloy, thickness, coating and production capability. |
| Coil Inner Diameter | 150 mm, 405 mm, 500 mm, 505 mm, 508 mm, 510 mm, 610 mm | Select according to customer processing equipment. |
| Coating System | PE, HDP, PVDF, Epoxy, Polyurethane, Anti-static and Other Functional Coatings | Final selection depends on application environment and performance requirements. |
| Coating Thickness | Customized according to coating system and project specification | Confirm top coat, primer and back coat dry film thickness separately where required. |
| Color | RAL, Pantone, Customer Sample Matching, Customized Colors | Final color should be approved by sample or production standard. |
| Surface Finish | Glossy, Matte, Metallic, Pearlescent, Embossed, Wood Grain, Stone Grain | Gloss level and texture should be confirmed before production. |
| Processing Service | Slitting, Cut-to-Length, Protective Film, Custom Packaging | Subject to confirmed production requirements. |
| Packaging | Moisture-proof paper, plastic film, edge protection, steel straps and export seaworthy packing | Packaging method can be adjusted for sea, rail, truck or shipment. |
| Delivery Time | To be confirmed by specification and order quantity | Coating color, alloy, raw material availability and processing can affect lead time. |
Common Alloys for Color Coated Aluminum
Alloy selection should be based on required strength, corrosion resistance, formability, surface quality, application environment and budget.
| Alloy Series | Common Grades | Main Characteristics | Typical Applications |
| 1xxx Pure Aluminum | 1050, 1060, 1070, 1100 | High aluminum content, good ductility, corrosion resistance and workability; lower strength compared with 3xxx and 5xxx alloys. | Decoration, appliance panels, signage, light-duty construction and applications requiring high formability. |
| 3xxx Aluminum-Manganese Alloy | 3003, 3004, 3105 | Improved strength compared with 1xxx series, good corrosion resistance and forming performance. | Roofing, wall cladding, gutters, curtain wall panels, general building decoration and transportation-related applications. |
| 5xxx Aluminum-Magnesium Alloy | 5005, 5052 | Good strength and corrosion resistance. 5052 is commonly selected for more demanding humid, marine or industrial environments. | Architectural decoration, marine-related environments, transportation, industrial panels and high-corrosion-resistance applications. |
| 8xxx Alloy | 8011, 8079 | Good formability and corrosion resistance for selected applications. | Packaging, decorative materials and special-use coated aluminum products. |
1050 / 1060 / 1100
- High formability and ductility
- Good corrosion resistance
- Suitable for general decoration and light-duty applications
- Lower strength than 3xxx and 5xxx alloys
3003 / 3004 / 3105
- Good balance of strength and formability
- Common choice for roofing and wall cladding
- Good corrosion resistance for general exterior applications
- Suitable for roll forming and fabrication
5005 / 5052
- Improved corrosion resistance and strength
- Suitable for humid, marine and industrial environments
- Used in architectural and transportation applications
- Material cost and processing requirements should be evaluated
Color Coated Aluminum Coil Coating Systems: PE, HDP and PVDF
The coating system has a significant impact on appearance, weatherability, corrosion resistance, color retention, forming performance and lifecycle cost.
| Coating Type | Main Features | Typical Use | Weatherability | Cost Level |
| PE Polyester | Good decorative performance, processing performance and cost efficiency. | Indoor decoration, appliance panels, advertising panels and mild environments. | Standard | Low |
| HDP High-Durability Polyester | Enhanced weatherability and anti-aging performance compared with standard PE. | Exterior cladding, general outdoor construction and roofing. | Enhanced | Medium |
| PVDF Fluorocarbon | High weather resistance, color retention and corrosion resistance when properly specified. | High-end facades, curtain walls, coastal projects, high-UV and demanding outdoor environments. | High | High |
| Epoxy Coating | Good adhesion and corrosion resistance for selected applications. | Industrial and corrosion-protection requirements. | Application dependent | Medium to High |
| Polyurethane Coating | Good flexibility and wear-resistance characteristics. | Applications requiring mechanical durability and flexibility. | Application dependent | Medium to High |
| Special Functional Coatings | May include anti-static, self-cleaning, heat-reflective or other customized functions. | Project-specific applications. | Application dependent | Customized |
PE Coated Aluminum
PE coating is commonly selected for cost-sensitive, indoor or mild-environment applications. It offers a broad color range, good decorative performance and practical forming characteristics.
HDP Coated Aluminum
HDP coating provides improved weatherability and aging resistance compared with standard polyester, making it a practical choice for exterior cladding, roofing and general outdoor applications.
PVDF Coated Aluminum
PVDF coating is commonly specified for demanding architectural applications, including curtain walls, exterior cladding, coastal projects and high-UV environments where long-term color and weather resistance are important.
Custom Colors, Gloss Levels and Decorative Finishes for Coated Aluminum
Choose coated aluminum in standard RAL colors or request a finish developed for your project. Color, gloss level and surface appearance can be selected to suit architectural cladding, signage, interior decoration, appliances, transportation and branded product applications.
For custom projects, colors can be matched to a RAL or Pantone reference, a physical sample, or an approved color standard. Please confirm the intended application, coating system, substrate, thickness and quantity when requesting a color match.
- Standard RAL colors and project-specific color matching
- Pantone references or matching based on an approved customer sample
- Gloss, semi-gloss, satin and matte surface options
- Metallic, pearlescent, brushed and reflective visual effects
- Wood-grain and stone-look decorative aluminum finishes
- Embossed, textured and patterned surfaces
- Protective film available for fabrication, transport and installation
- Custom gloss levels subject to pigment, coating formulation and final color approval
To receive a suitable recommendation, provide the desired color reference, finish type, aluminum grade, thickness, coil or sheet dimensions, end-use environment and required order quantity. For projects where color consistency is critical, an approved production sample is recommended before bulk supply.
Custom RAL colors, matte coatings, metallic effects, wood-grain patterns and other decorative aluminum finishes.
Colored Mirror Aluminum Coil Options
Our colored mirror aluminum coil range includes blue, gray, violet, red, pink, brown, silver, gold, black and copper-toned finishes. These decorative coils are commonly considered for interior panels, trim, signage, lighting components, packaging and display applications.
Color Coated Aluminum Sheet Coil Chemical Composition
| Alloy | Si | Fe | Cu | Mn | Mg | Cr | Zn | Ti | Others: Each | Others: Total | Al:Min. |
| 1050 | 0.25 | 0.40 | 0.05 | 0.05 | 0.05 | - | 0.05 | 0.03 | 0.03 | - | 99.50 |
| 1050A | 0.25 | 0.40 | 0.05 | 0.05 | 0.05 | - | 0.07 | 0.05 | 0.03 | - | 99.50 |
| 1100 | 0.95 Si + Fe | 0.05~0.20 | 0.05 | - | - | 0.10 | - | 0.05 | 0.15 | 99.0 | |
| 3003 | 0.60 | 0.70 | 0.05~0.20 | 1.0~1.5 | - | - | 0.10 | - | 0.05 | 0.15 | remainder |
| 3105 | 0.60 | 0.70 | 0.30 | 0.3~0.8 | 0.2~0.8 | 0.20 | 0.40 | 0.10 | 0.05 | 0.15 | remainder |
| 5005 | 0.30 | 0.70 | 0.20 | 0.20 | 0.5~1.1 | 0.1 | 0.25 | - | 0.05 | 0.15 | remainder |
| 5052 | 0.25 | 0.40 | 0.10 | 0.10 | 2.2~2.8 | 0.15~0.35 | 0.10 | ||||
Applications of Color Coated Aluminum Coil & Sheet
| Application Field | Typical Applications | Common Material Options | Main Considerations |
| Construction & Decoration | Roofing, wall cladding, curtain walls, ceilings, interior panels, awnings and trim. | 3003, 3004, 3105, 5005, 5052 with PE, HDP or PVDF coating. | Weatherability, corrosion resistance, color retention, forming and installation requirements. |
| Metal Roofing Systems | Standing seam roofs, corrugated roofing sheets, profiled roofing panels and gutter systems. | 3003, 3004, 3105; HDP or PVDF depending on exposure. | Formability, thickness, coating flexibility, UV exposure, drainage and local climate. |
| Curtain Wall & Facade | Architectural cladding, facade panels, decorative aluminum panels and exterior wall systems. | 3003, 5005, 5052; often HDP or PVDF for exterior projects. | Color consistency, coating system, project warranty requirements and corrosion environment. |
| Aluminum Composite Panel | ACP production, architectural composite panels, signs and display panels. | 1100, 3003 and other suitable alloys with PE or PVDF systems. | Surface flatness, coating adhesion, color consistency and bonding compatibility. |
| Home Appliances | Refrigerator panels, washing machine panels, air conditioner housings and appliance components. | 1100, 3003 with PE, HDP or other suitable coating systems. | Appearance, scratch resistance, processing behavior and cleaning requirements. |
| Transportation | Vehicle interior trim, rail transit interior panels, marine decoration and traffic facilities. | 3003, 3004, 5052 depending on environment and mechanical requirements. | Weight reduction, corrosion resistance, forming and vibration-related conditions. |
| Advertising & Signage | Signboards, lightboxes, display stands, billboards and decorative displays. | 1050, 1060, 1100, 3003 with PE coating. | Printability, color visibility, flatness and outdoor durability requirements. |
| Packaging & Specialized Use | Selected packaging materials, decorative packaging, industrial panels and insulation-facing materials. | 1100, 8011 and other alloys subject to final application requirements. | Food-contact, coating safety, thickness and application-specific compliance where applicable. |
Color Coated Aluminum Coil Quality Control
Every color coated aluminum coil is inspected against the agreed product specification before shipment. Our quality control process covers substrate dimensions, coating performance, surface finish and packaging condition to help ensure consistent results during fabrication, forming and end use.
- Substrate verification: Aluminum coil thickness, width, alloy, temper and coil weight are checked against the purchase order or technical specification.
- Surface appearance inspection: The painted surface is examined for scratches, dents, pinholes, streaks, roller marks, coating voids, color inconsistency and other visible defects.
- Coating thickness measurement: Dry film thickness is measured using appropriate methods for non-ferrous aluminum substrates, such as eddy-current coating gauges.
- Color consistency testing: Where required, a colorimeter is used to compare the finished coating with the approved color standard or customer sample.
- Gloss measurement: Surface gloss is checked at the specified angle when gloss level is part of the product requirement.
- Pencil hardness testing: Coating hardness may be evaluated to confirm resistance to scratching and surface damage during handling and fabrication.
- Cross-hatch adhesion testing: Coating adhesion is tested where specified to verify that the paint system is firmly bonded to the aluminum substrate.
- T-bend flexibility testing: The coated aluminum is bent to assess coating flexibility and resistance to cracking during roll forming or bending.
- Impact resistance testing: Impact tests may be performed to evaluate coating durability under mechanical stress.
- Corrosion resistance testing: Salt spray or other corrosion-resistance tests can be arranged for applications requiring enhanced environmental performance.
- Packaging inspection: Protective film, edge protection, inner wrapping, export-grade packing and coil labeling are checked before loading.
Testing methods and acceptance criteria are selected according to the coil application, paint system and customer requirements. Inspection records, color references and test reports can be provided when required for project approval or incoming quality control.
How Color Coated Aluminum Coil Is Produced
Color coated aluminum coil is produced through a continuous process that typically includes substrate selection, surface pretreatment, primer and top-coat application, curing, quality inspection and final packaging. Each stage is controlled to ensure consistent coating performance, appearance and suitability for downstream forming.
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Aluminum Substrate Selection
Select the appropriate aluminum alloy, temper, thickness and width based on the required forming process, end-use application and service environment.
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Cleaning & Pretreatment
Clean and chemically pretreat the aluminum surface to remove contaminants and improve coating adhesion and corrosion resistance.
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Primer Application
Apply a compatible primer to improve adhesion between the aluminum substrate and the subsequent top-coat system while providing additional corrosion protection.
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Top Coat Application
Apply PE, HDP, PVDF or another specified coating system according to the required color, gloss, coating thickness and application conditions.
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Oven Curing
Cure the coated aluminum under controlled oven conditions to develop the required coating properties, surface finish and film durability.
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Quality Inspection
Check coating thickness, color, gloss, surface appearance, dimensions, adhesion, flexibility and other agreed quality requirements before release.
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Slitting or Cut-to-Length
Process the finished coil into narrower strips or cut-to-length sheets according to the customer's fabrication equipment and final product requirements.
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Export Packaging
Protect the finished material with suitable moisture-resistant packaging, edge protection, supports and strapping for handling and international transportation.
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Loading & Shipment
Verify coil condition, loading arrangement, securing methods and shipping documentation before the finished color coated aluminum coil is dispatched.
FAQ – Color Coated Aluminum Coil & Sheet
What is color coated aluminum coil?
Color coated aluminum coil, also known as prepainted aluminum coil, is aluminum coil coated with organic paint systems such as PE, HDP or PVDF after surface pretreatment. It combines aluminum’s light weight and corrosion resistance with decorative color and additional surface protection.
What is the difference between PE, HDP and PVDF coated aluminum?
PE polyester is commonly selected for indoor decoration and mild environments. HDP provides improved weatherability for many general exterior applications. PVDF is generally selected for demanding exterior projects, including high-UV, coastal or architectural facade environments. The final decision should consider coating thickness, UV exposure, humidity, salt exposure and project requirements.
Which aluminum alloy is suitable for roofing?
3003, 3004 and 3105 are commonly used for roofing and wall cladding because they provide a good balance of strength, formability and corrosion resistance. For demanding humid, industrial or marine environments, 5052 may be considered based on final project requirements.
Can you supply custom RAL colors?
Custom RAL colors, Pantone references and customer sample color matching may be available. For critical projects, color should be confirmed using a physical sample, approved color card or production standard before bulk production.
Can color coated aluminum coil be slit into strips?
Yes. Color coated aluminum coil can be slit into narrow strips based on thickness, width, edge requirements, coil weight and processing conditions. Please provide the required slit width and tolerance.
Can I request a sample before placing a bulk order?
Samples may be available for coating color, gloss, surface effect, bending and fabrication evaluation. Please provide the alloy, thickness, coating system, color reference and intended application when requesting a sample.
How is color coated aluminum packaged for export?
Export packaging may include protective film, moisture-proof paper, plastic film, edge protection, steel or wooden support, steel straps and seaworthy outer protection. Final packing should be confirmed according to product dimensions, destination and shipping method.
What documents can be supplied with the shipment?
Depending on the confirmed order, available documents may include a mill test certificate, packing list, commercial invoice, certificate of origin, coating technical data sheet and inspection report. Confirm required documents before order placement.