Color Coated Aluminum Sheet Coil

Color-coated aluminum, also known as color-coated aluminum sheet or coil, is a composite material formed by applying one or more layers of organic coatings onto pretreated aluminum sheets through continuous roll coating or spraying processes. This material combines the lightweight and corrosion-resistant characteristics of aluminum with the decorative and protective properties of the coating, making it an ideal material for modern construction, home appliances, transportation, and other fields.

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As a high-performance, multifunctional composite material, color-coated aluminum is widely used in construction, transportation, home appliances, packaging, and many other fields due to its advantages of being lightweight, high-strength, corrosion-resistant, and aesthetically pleasing.

Core Advantages of Color Coated Aluminum Sheet Coil

• Lightweight and high-strength, reducing structural load
• Excellent corrosion and weather resistance
• Rich colors and surface finish effects
• Good processing performance and plasticity
• Environmentally friendly and recyclable, meeting sustainable development requirements

Common Alloy Materials of Color-Coated Aluminum

Series 1: Pure Aluminum

• Series 1 pure aluminum has the highest aluminum content, with main grades including , , , , etc. Among them:
• grade: relatively soft, excellent ductility, outstanding forming and processing characteristics, high corrosion resistance, long service life, low cost, but lower strength and rigidity; mainly used in applications requiring high formability but low strength.
• grade: aluminum content above 99.00%, also with excellent formability, corrosion resistance, and weldability; one of the commonly used pure aluminum materials in color-coated aluminum.

Series 3: Aluminum-Manganese Alloy

• Series 3 alloys mainly add manganese to improve the strength and corrosion resistance of aluminum:
• grade: manganese content between 1-1.5%, density approximately 2.73g/cm³, hardness and tensile properties superior to Series 1. Excellent anti-rust properties, also called "rust-proof aluminum", widely used in color-coated aluminum.
• grade: higher strength than , excellent formability, good corrosion resistance; widely applied in airports, stations, stadiums, and other public buildings.
• grade: further optimized on the basis of , good formability and corrosion resistance, commonly used in color-coated aluminum products requiring certain strength.

Series 5: Aluminum-Magnesium Alloy

• Series 5 alloys mainly add magnesium to significantly improve material strength:
• grade: main features include low density, high tensile strength, high elongation. Due to low density, it is lightweight, with performance higher than Series 3; price is relatively higher, commonly used in high-end color-coated aluminum products.
• grade: lower magnesium content, good corrosion resistance and formability; commonly used in Series 5 color-coated aluminum.

Other Alloy Series

In addition to the main series above, some other alloy series are used for specific color-coated aluminum products:

• grade: aluminum-silicon alloy, good formability and corrosion resistance, often used in color-coated aluminum products with special requirements.
• Series 6 alloys (such as , ) and Series 7 alloys (such as ): these alloys have higher strength, mainly used in special color-coated aluminum products requiring extreme strength, but less common in general color-coated aluminum.

Alloy Series Main Grades Features Application Areas Series 1 Pure Aluminum , High purity, good ductility, strong corrosion resistance, low strength Applications requiring high formability but low strength Series 3 Aluminum-Manganese , , Moderate strength, good corrosion resistance, excellent formability Building curtain walls, roofing, general decorative materials Series 5 Aluminum-Magnesium , Low density, high strength, excellent corrosion resistance Applications requiring lightweight and high strength, such as aerospace and high-end construction Series 8 Alloy Good formability and corrosion resistance Special packaging, decorative materials

Haomei Color-Coated Aluminum Sheet & Coil Strip Product Range

Item Specification Description Alloy Series Series (, ) Series (, , ) Series (, ) Series (, ) Temper H14, H16, H18, H24, H32, etc., balancing strength and flexibility Thickness Range 0.2–6.0 mm Coil: 0.2–2.0 mm Sheet: 2.0–6.0 mm Width Range 50– mm (customizable) Coating Type PE (Polyester): Economical, service life 7–10 years PVDF (Polyvinylidene Fluoride): Excellent UV resistance, service life 20–30 years HDP (High-Density Polyester): Medium durability (10–15 years) Coating Thickness Single Layer: 4–20 μm Double Layer: 25–28 μm Triple Layer: 30–38 μm Packaging Method Waterproof paper + steel strip, standard export packaging Core Diameter 150–610 mm Transportation Method Pallet transportation for sea shipping Delivery Time 7–30 days, depending on customization requirements

• Color-Coated Aluminum Sheet Coil Strip: High-purity aluminum material with excellent corrosion resistance and good workability, suitable for decorative and construction applications.
• Color-Coated Aluminum Sheet Coil Strip: Lightweight and corrosion-resistant, with a smooth and flat surface, ideal for indoor and outdoor decoration and light construction structures.
• Color-Coated Aluminum Sheet Coil Strip: High aluminum content, strong oxidation resistance, suitable for roofing, curtain walls, and signage.
• Color-Coated Aluminum Sheet Coil Strip: High-purity aluminum, good electrical conductivity, long-lasting surface brightness, commonly used in building decoration and appliance panels.
• Color-Coated Aluminum Sheet Coil Strip: Manganese-containing alloy, high strength, corrosion-resistant, widely used for roofing, walls, and decorative panels.
• Color-Coated Aluminum Sheet Coil Strip: Higher strength than , excellent weather resistance, suitable for curtain walls, roofing, and decorative panels.
• Color-Coated Aluminum Sheet Coil Strip: Good corrosion resistance and excellent formability, commonly used in roofing, curtain walls, and architectural decoration.
• Color-Coated Aluminum Sheet Coil Strip: Outstanding corrosion resistance, suitable for coastal and humid environment building decoration.
• Color-Coated Aluminum Sheet Coil Strip: High strength, corrosion-resistant, commonly used in roofing, walls, ships, and industrial decorative panels.

Forms of Color-Coated Aluminum Products

• Color-Coated Aluminum Coil: Continuous coil, suitable for large-scale building curtain walls, roofing, and decorative projects, easy to process and transport.
• Color-Coated Aluminum Sheet: Flat sheet, suitable for construction, indoor and outdoor decoration, and furniture surfaces, easy to cut and form.
• Color-Coated Aluminum Foil: Ultra-thin flexible material, suitable for packaging, decoration, and electronic applications, corrosion-resistant and printable.
• Color-Coated Aluminum Strip: Narrow coil, suitable for profiles, doors and windows, signage, and industrial parts, easy to bend and process.

Haomei color-coated aluminum is mainly supplied in coil and sheet forms:

• Color-coated aluminum coil: the main supply form, convenient for transportation and large-scale processing. Usually produced via continuous roll coating, and the length can be customized according to user requirements.
• Color-coated aluminum sheet: formed by leveling and cutting aluminum coils into flat sheets of specific sizes. Depending on surface treatment, it can be flat sheets, embossed sheets, corrugated sheets, and other forms.

In addition, for special applications, there are some special forms of color-coated aluminum products, such as color-coated aluminum strips, color-coated corrugated sheets, and color-coated ribbed sheets, mainly used in specific construction and decorative fields.

Haomei Color-Coated Aluminum Product Specifications

The specifications of color-coated aluminum mainly include thickness, width, length, and coating thickness:

• Thickness range: The thickness of color-coated aluminum varies widely, generally from 0.2-5.0mm. For architectural decoration, it is usually 0.2-1.5mm; for industrial use, it can reach 3.0-5.0mm; for special applications, ultra-thin specifications can go down to 0.04mm.
• Width range: The width of color-coated aluminum coils is generally 650-mm, with a maximum up to mm; for sheets, the width is generally 800-mm, and special sizes can reach mm.
• Length specifications: Coil lengths can be customized according to user needs, usually 2-5 tons per coil; standard sheet lengths are generally -mm, with special sizes available upon request.
• Coating thickness: Coating thickness is an important parameter, directly affecting service life and performance. Generally, polyester (PE) coatings have a dry film thickness ≥18 microns, and fluorocarbon (PVDF) coatings ≥25 microns.
• Coil core diameter: Inner diameters of coils typically include 150mm, 405mm, 500mm, 505mm, 508mm, 510mm, to suit different processing equipment.

Surface Treatment and Coating Effects

Color-coated aluminum offers a variety of surface treatments and coating effects, including:

• Color options: Multiple color choices can be provided according to user requirements, with over 60 standard colors or customized color matching from samples.
• Surface texture: Through different coating processes and additives, various finishes can be achieved such as gloss, matte, pearlescent, and metallic effects. Special processes can also create natural textures like wood grain, stone grain, or embossed patterns to meet design requirements.
• Coating hardness: Typically required to be greater than 2H, ensuring good wear resistance and scratch resistance during use.
• Gloss: Gloss can be adjusted according to requirements, generally controlled between 10-90%, to meet aesthetic requirements for different applications.

Parameter Type Common Range Special Range Application Scenarios Thickness 0.2-1.5mm 0.04-5.0mm Standard architectural decoration / special industrial applications Width 650-mm 50-mm Standard products / customized Coating Thickness (PE) ≥18 microns - General decorative requirements Coating Thickness (PVDF) ≥25 microns - High weather-resistance applications Gloss 10-90% - Customizable according to design

• 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 sheet coil

• Copper aluminum coil

Coatings of Color-Coated Aluminum

The coating system of color-coated aluminum determines its service life, appearance, and weather resistance. According to different classifications, the coatings of color-coated aluminum are mainly categorized as follows:

Polyester (PE) Coated Aluminum Coil

Polyester coating is the most commonly used coating for color-coated aluminum, offering good decorative and processing performance at a relatively low cost. Polyester resin is a polymer with ester bonds in the main chain, combined with alkyd resin, UV absorbers, and other additives. According to gloss, it can be divided into matte and high-gloss series, providing rich color, good gloss and smoothness, as well as excellent texture and feel. PE-coated color-coated aluminum is suitable for indoor decoration, advertising panels, and general building use, with colors typically lasting up to 20 years without fading.

High-Durability Polyester (HDP) Coated Aluminum Coil

High-durability polyester coating is an improved version of regular polyester, adding special weather-resistant additives to significantly enhance coating durability and anti-aging performance. Its weather resistance is between that of regular polyester and PVDF coatings, and the price is moderate, making it a cost-effective coating option.

Fluorocarbon (PVDF) Coated Aluminum Coil

Fluorocarbon coating (polyvinylidene fluoride, PVDF) is currently the most high-performance coating for color-coated aluminum. In addition to excellent mechanical wear and impact resistance, it provides long-lasting color retention under harsh climates and environments, with superior weather resistance. PVDF coatings can be divided into traditional fluorocarbon and nano-fluorocarbon based on film formation structure. PVDF-coated color-coated aluminum is suitable for high-end architectural indoor and outdoor decoration, with colors guaranteed not to fade or peel for over 20 years.

Other Special Coatings

In addition to the main coatings mentioned above, there are some special functional coatings, such as:

• Silicone-modified polyester coating: offers better heat resistance and weatherability.
• Epoxy coating: provides excellent corrosion resistance and adhesion, commonly used in applications requiring high anti-corrosion performance.
• Polyurethane coating: offers good flexibility and wear resistance, commonly used in applications requiring higher mechanical performance.
• Anti-static coating: provides anti-static functionality, suitable for the electronics and electrical industry.
• Self-cleaning coating: offers self-cleaning functionality, making the panel surface less prone to dirt and easier to maintain.

Coating Type Main Features Service Life Weather Resistance Price Main Applications Polyester (PE) Good decorative and processing performance About 20 years Medium Relatively low Indoor decoration, advertising panels, general construction High-Durability Polyester (HDP) Excellent weather resistance and anti-aging performance About 25 years Good Moderate Building exteriors, general outdoor applications Fluorocarbon (PVDF) Exceptional weather resistance and corrosion resistance Over 30 years Excellent Relatively high High-end buildings, landmark buildings, harsh environments Special Functional Coatings Provides specific functions (e.g., anti-static, self-cleaning) Depends on type Depends on type Relatively high Applications requiring specific functional features

Features of Color Coated Aluminum Sheet Coil

• Aesthetic Diversity: These aluminum coils offer a variety of colors and finishes, including matte, glossy, wood grain, and stone grain patterns, enabling diverse design possibilities.
• Durability: The coating provides excellent weather resistance, protecting the aluminum coil from UV radiation, corrosion, and environmental wear. High-quality coatings such as PVDF (Polyvinylidene Fluoride) can offer warranties of 20 years or more.
• Lightweight and Strong: Aluminum coils have low density and light weight, reducing structural load. Despite their lightness, they retain high strength and stiffness, suitable for various applications.
• Formability: Color coated aluminum coils have excellent formability and can be processed into various shapes without affecting the integrity of the coating.
• Environmental Friendliness: Aluminum is a recyclable material, and the coating processes are designed to be more environmentally friendly, supporting sustainable development.
• Colors and Surface Treatments: Color coated aluminum coils are available in various colors and surface treatments, including smooth, textured, matte, and other effects to meet different design needs.
• Thermal Conductivity: Excellent thermal conductivity makes it suitable for applications requiring heat dissipation, such as exterior building surfaces and roofs.
• Economic Efficiency: Color coated aluminum coil is a cost-effective choice, offering high cost-performance compared to other materials.

Advantages of Color-Coated Aluminum Compared to Other Materials

Lightweight, Reduces Structural Load

• Density advantage: Aluminum has a density of approximately 2.73g/cm³, about one-third of steel plate. This makes color-coated aluminum significantly lighter than other metals, such as color-coated steel.
• Reduces structural burden: Due to its light weight, using color-coated aluminum can greatly reduce the load on supporting structures, especially suitable for large-span buildings such as airports, stations, and stadiums with high load-bearing requirements.
• Lowers transportation and installation costs: Its lightweight nature also makes transportation and installation easier, reducing costs and installation difficulty.

Strong Corrosion Resistance, Long Service Life

• Natural anti-corrosion: Aluminum reacts with oxygen in the air to form a dense oxide film on its surface, which prevents further oxidation and acts as a natural protective layer, giving color-coated aluminum excellent self-corrosion resistance.
• Coating protection: The organic coating on the surface of color-coated aluminum further enhances corrosion and weather resistance. PVDF-coated aluminum can withstand harsh environments for long periods without significant corrosion or fading.
• Long service life: Under normal conditions, PE-coated aluminum can last over 20 years, while PVDF-coated aluminum can last over 30 years, far exceeding ordinary color-coated steel.

High Strength, Good Rigidity

• Alloy strengthening: Adding elements like magnesium and manganese significantly improves strength and rigidity. For example, aluminum-magnesium-manganese alloy and aluminum-magnesium alloy can reach or exceed the strength of some low-carbon steels.
• Structural stability: Color-coated aluminum has good rigidity and structural stability, is not easily deformed, and can withstand significant external forces and pressure, suitable for applications with high structural strength requirements.
• Good impact resistance: Can withstand impacts of 50kg/cm without peeling or cracking, maintaining integrity under moderate external force.

Excellent Workability and Formability

• Easy to process and form: Good plasticity and workability allow bending, cutting, and grooving to create various shapes such as arcs and right angles to meet design requirements.
• Adapts to complex shapes: Can be formed into straight, concave, convex, fan-shaped, or other roof shapes, including spherical and curved forms, maximizing design flexibility.
• Good compatibility: Can be processed using standard metal or woodworking tools and is compatible with other construction and decorative materials.

Excellent Coating Performance, Attractive Appearance

• Rich color options: Offers over 60 standard colors and custom colors, including wood grain and embossed patterns, to meet various architectural styles and design requirements.
• Uniform coating: Roll coating technology ensures more even surface coatings compared to powder coating, with consistent thickness control.
• Adjustable gloss: Coating gloss can be adjusted from 10-90%, achieving both low-key matte and bright high-gloss effects for different settings.
• Long-lasting aesthetics: High-quality coatings maintain appearance over time without fading or discoloration.

Excellent Environmental Performance

• Recyclable: High recycling value. Ordinary color-coated steel sells at only a few cents per kilogram after corrosion, while color-coated aluminum can recover 85-95% of the original aluminum value.
• Low-carbon and eco-friendly: Aluminum production is relatively environmentally friendly and does not release harmful substances during use, meeting modern green building requirements.
• Energy-saving: Lightweight aluminum reduces overall building weight, lowering energy consumption. Certain special coatings also provide heat insulation, improving energy efficiency.

Good Fire Resistance

• Non-combustible: Aluminum is inherently non-flammable, providing good fire safety in building applications.
• High-temperature stability: Unlike some organic materials, color-coated aluminum does not emit toxic gases or smoke under high temperatures, enhancing safety during fires.

Advantage Aspect Color-Coated Aluminum Coil/Strip Color-Coated Steel Aluminum Alloy (Uncoated) Other Metals Weight Light (density ~2.73g/cm³) Heavy (density ~7.85g/cm³) Light Mostly heavy Corrosion Resistance Excellent (natural corrosion resistance + coating protection) Moderate (relies on coating protection) Good (natural corrosion resistance) Varies by material Strength High (after alloy strengthening) High Medium Varies by material Workability Excellent, easy to process and form Good, slightly inferior to aluminum Good Varies by material Decoration Excellent, rich and long-lasting colors Good, prone to fading and corrosion Moderate, single color Varies by material Service Life Long (20-30 years) Shorter (10-15 years) Long, but colors are monotonous Varies by material Recycling Value High (85-95% of original aluminum value) Low (about 50% of original steel value) High Varies by material

Color Coated Aluminum Sheet Coil Alloy Designation

Alloy Chinese Standard American Standard European Standard 1xxx Series - - A - EN AW-A - 3xxx Series EN AW- EN AW- 5xxx Series EN AW- EN AW-

Color Coated Aluminum Sheet Coil Chemical Composition

Alloy Si Fe Cu Mn Mg Cr Zn Ti Others: Each Others: Total Al:Min. 0.25 0.40 0.05 0.05 0.05 - 0.05 0.03 0.03 - 99.50 A 0.25 0.40 0.05 0.05 0.05 - 0.07 0.05 0.03 - 99.50 0.95 Si + Fe 0.05~0.20 0.05 - - 0.10 - 0.05 0.15 99.0 0.60 0.70 0.05~0.20 1.0~1.5 - - 0.10 - 0.05 0.15 remainder 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 0.30 0.70 0.20 0.20 0.5~1.1 0.1 0.25 - 0.05 0.15 remainder 0.25 0.40 0.10 0.10 2.2~2.8 0.15~0.35 0.10

Applications of Color-Coated Aluminum

Thanks to its excellent performance and diverse surface treatment options, color-coated aluminum is widely used in multiple fields such as construction, transportation, home appliances, and packaging.

Color-Coated Aluminum Sheets in Construction and Decoration

Building Roof Systems

Color-coated aluminum, especially aluminum-magnesium-manganese alloy color-coated aluminum, is an ideal material for metal roofing systems. It features lightweight, high strength, and good waterproof performance, making it suitable for various building roofs such as airports, stadiums, exhibition halls, and railway stations. Color-coated aluminum roofing systems can be formed into multiple shapes, including spherical, curved, and fan-shaped, meeting different architectural design requirements.

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Building Exterior Walls and Curtain Walls

Color-coated aluminum sheets are widely used for exterior wall decoration and curtain wall systems. They offer a wide range of color options and have good weather resistance and corrosion resistance, maintaining a long-lasting aesthetic appearance. Color-coated aluminum curtain wall systems are lightweight, easy to install, and visually appealing, suitable for various architectural styles, from modern minimalist to classical ornate designs.

Interior Decoration

Color-coated aluminum sheets are also widely used in interior decoration, such as ceilings, wall panels, partitions, and furniture finishes. Their rich colors and good workability make them an ideal choice for interior designers, enabling the creation of unique interior spaces. Additionally, color-coated aluminum is easy to clean, fire-resistant, and moisture-resistant, making it highly suitable for indoor applications.

Shading and Awnings

Color-coated aluminum sheets can be used to create building shading systems and awnings, providing both sun and rain protection while offering decorative appeal. These systems are lightweight, strong, and weather-resistant, suitable for long-term use under various climatic conditions.

Other Architectural Applications

Color-coated aluminum sheets can also be used for decorative trim, balcony railings, stair handrails, ventilation openings, exhaust ducts, and various building components, providing a coordinated and aesthetic overall effect.

Color-Coated Aluminum Sheets in Home Appliances and Electronics

• Home Appliance Housings Color-coated aluminum sheets have excellent corrosion resistance, decorative appeal, and workability, making them ideal for housings of refrigerators, air conditioners, washing machines, microwaves, and other home appliances. They are not only aesthetically pleasing and durable but also lightweight, facilitating transportation and installation.
• Electronic Device Housings Color-coated aluminum sheets can be used for computer cases, server cabinets, instrument housings, and other electronic device enclosures. Aluminum's electrical conductivity and thermal conductivity make it suitable for electromagnetic shielding and heat dissipation, while color coating provides decorative and protective features.
• Lighting Equipment Color-coated aluminum sheets can be used for housings and reflectors of various lighting devices. Aluminum's high reflectivity makes it ideal for reflectors, improving lighting efficiency, and color coating offers rich color options to meet diverse lighting design requirements.
• Solar Equipment Color-coated aluminum sheets are also used in solar applications, such as outer casings of solar water heaters, frames and reflectors of solar panels, etc. Aluminum's lightweight, high strength, and corrosion resistance make it suitable for solar devices, and color coating provides additional protection and decorative effects.

Color-Coated Aluminum Coils in Transportation

Automotive Interiors and Trim

Color-coated aluminum coils can be used to manufacture automotive interior components, such as door panels, dashboard panels, and seat trims. Aluminum's lightweight helps reduce vehicle weight and improve fuel efficiency, while color coating provides a wide range of colors and textures, enhancing interior aesthetics and comfort.

Marine and Offshore Engineering

Color-coated aluminum coils are widely used in ship and offshore engineering applications, such as interior decoration, deck coverings, and cabin partitions. Aluminum's light weight and corrosion resistance make it ideal for marine environments, while color coating provides extra protection and decorative appeal.

Rail Transit Vehicles

Color-coated aluminum coils can be used for interior decoration and exterior cladding of subways, high-speed trains, and other rail vehicles. Aluminum's lightweight helps reduce vehicle weight and improve operational efficiency, and color coating provides a wide range of colors and good weather resistance, meeting aesthetic and functional needs.

Aerospace

Although high-strength aluminum alloys like are mainly used in aerospace, color-coated aluminum coils are applied in some non-critical structural and interior components. Aluminum's lightweight helps reduce aircraft weight and enhance performance, while color coating provides decorative and protective functions.

Traffic Signs and Facilities

Color-coated aluminum coils are widely used for traffic signs, signboards, guardrails, and other transportation facilities. Aluminum's light weight and corrosion resistance make it ideal for outdoor applications, while color coating provides bright colors and good visibility, improving safety and recognizability.

Color-Coated Aluminum Coils in Packaging and Advertising

• Metal Packaging Color-coated aluminum coils can be used to make various metal packaging containers and materials, such as food cans, beverage cans, and cosmetic packaging. Aluminum's light weight, corrosion resistance, and non-toxicity make it suitable for food and pharmaceutical packaging, while color coating provides rich colors and patterns, enhancing visual appeal.
• Advertising Displays Color-coated aluminum coils are widely used for billboards, display stands, lightboxes, signage, and other advertising displays. Aluminum's light weight and good workability facilitate the production and installation of various display structures, while color coating provides vibrant, long-lasting visual effects.
• Decorative Panels Color-coated aluminum coils can be used to manufacture various decorative panels, such as aluminum-plastic composite panels, aluminum honeycomb panels, and aluminum single panels, which are widely used in construction decoration, furniture manufacturing, and exhibitions.

Industrial and Specialized Applications

Industrial Equipment and Piping

Color-coated aluminum coils can be used to manufacture industrial equipment housings, pipe insulation materials, and anti-corrosion coatings. Aluminum's corrosion resistance and thermal conductivity make it suitable for industrial environments, and color coating provides additional protection and labeling.

Medical Equipment

Color-coated aluminum coils can be used for medical equipment housings, hospital furniture, and medical instruments. Aluminum's lightweight, corrosion resistance, and non-toxicity make it suitable for medical applications, while color coating provides clean, hygienic surfaces and decorative appeal.

Refrigeration and Freezing Equipment

Color-coated aluminum strips can be used for the interior decoration and structural components of cold storage, freezers, and refrigerators. Aluminum's low-temperature resistance and corrosion resistance make it ideal for cold environments, while color coating provides good aesthetics and easy cleaning.

Application Field Main Application Scenarios Common Color-Coated Aluminum Materials Main Advantages Construction and Decoration Roofs, exterior walls, curtain walls, ceilings, interior decoration, etc. , , alloys, PVDF or HDP coatings Lightweight, high strength, good weather resistance, strong decorative appeal Home Appliances and Electronics Appliance housings, electronic device housings, lighting equipment, etc. , alloys, PE or HDP coatings Lightweight, corrosion-resistant, decorative, excellent workability Transportation Automotive interiors, ship decoration, rail transit, traffic signs, etc. , alloys, PE or HDP coatings Lightweight, high strength, good corrosion resistance, strong decorative appeal Packaging and Advertising Metal packaging, billboards, display stands, signage, etc. , alloys, PE coating Lightweight, corrosion-resistant, decorative, excellent workability Industrial and Specialized Applications Industrial equipment, medical equipment, aerospace components, etc. , alloys, special functional coatings Lightweight, high strength, corrosion-resistant, versatile functionality

How to Select Color-Coated Aluminum

Color-Coated Aluminum Product Selection Process

• Clarify Application Requirements Determine the specific application scenarios, environmental conditions, performance requirements, and decorative needs of the color-coated aluminum product to provide clear goals and standards for subsequent selection.
• Determine Alloy Material Based on application requirements and performance needs, choose the appropriate alloy material, such as , , , , etc.
• Select Coating System Choose the appropriate coating system according to the usage environment and decorative needs, such as PE, HDP, PVDF, and determine the coating color, gloss level, and surface effect.
• Determine Product Specifications Decide the thickness, width, length, and other specifications of the color-coated aluminum product based on application requirements and processing conditions.
• Sample Evaluation Request samples from the supplier for evaluation, checking the product's appearance quality, coating performance, and workability to ensure they meet requirements.
• Quality Inspection Conduct strict quality inspections upon product delivery to ensure compliance with contract requirements and relevant standards.

Choose the appropriate alloy material according to the application environment

• Consider the application scenario: Select the appropriate alloy material according to the specific application scenario of the color-coated aluminum product. For example, for building roofs and exterior walls that require high strength and weather resistance, aluminum-magnesium-manganese alloy is suitable; for interior decoration and general purposes, or alloy can be used; for applications with strict weight requirements, such as aerospace, aluminum-magnesium alloy is suitable.
• Consider environmental factors: Choose alloy materials based on climate conditions and corrosion risk in the usage environment. In harsh environments with high humidity or high salt content, select corrosion-resistant alloys like or ; in dry or indoor environments, cost-effective or alloys can be chosen.
• Consider strength requirements: Select alloy materials based on required strength and rigidity. For high-strength structural applications, or alloys are recommended; for general decorative applications with low strength requirements, or alloys are sufficient.
• Consider processing methods: Choose alloy materials according to subsequent processing requirements. Different alloys have different workability, with some better suited for bending, stamping, or stretching. For example, alloy has excellent workability and is suitable for complex shapes, while alloy is strong but harder to process.

Choose the appropriate coating according to usage requirements

• Consider the environment: Select coating systems based on climate and corrosion risk. For outdoor, high-humidity, high-salt environments, choose PVDF or HDP coatings; for indoor or mild environments, PE coating is suitable.
• Consider lifespan requirements: Select coatings according to expected product life. For long-term applications requiring over 20 years, choose PVDF; for medium-term applications of 10-20 years, select HDP; for short-term or indoor use, PE is sufficient.
• Consider decorative requirements: Choose coatings based on desired aesthetic effect. Different coatings provide different color options, gloss, and textures. PVDF provides richer color choices and long-lasting color retention, while special coatings like wood grain transfer or printed patterns offer unique decorative effects.
• Consider functional requirements: Choose coatings based on special functions. For example, anti-static coating for electrostatic-sensitive environments, self-cleaning coating for easy maintenance, heat-insulating coating for thermal management, etc.

Quality Indicators for Color-Coated Aluminum Sheet, Coil, and Strip

• Coating Thickness Coating thickness is an important factor affecting product life and performance. Ensure polyester coatings have a dry film thickness ≥18 μm and fluorocarbon coatings ≥25 μm. Insufficient thickness reduces weather resistance and corrosion resistance, shortening product life.
• Adhesion Adhesion between the coating and aluminum substrate is critical to prevent peeling or cracking. Choose products with adhesion not less than Grade 1 to ensure firm bonding.
• Hardness Coating hardness affects wear and scratch resistance. Choose products with a coating hardness greater than 2H to prevent damage during normal use.
• Impact Resistance Impact resistance measures the ability to withstand external force. Select products that show no peeling or cracks under 50kg/cm impact to ensure durability under external stress.
• Weather Resistance Weather resistance indicates the product's ability to withstand natural environmental effects over time. Choose products verified through aging tests to prevent fading, discoloration, or corrosion.

Consider Product Specifications and Dimensions

• Thickness: Select appropriate thickness according to application. For building decoration, thickness is usually 0.2-1.5mm; for industrial use, 3.0-5.0mm; for special applications, thickness can be as low as 0.04mm.
• Width: Select width based on application and processing equipment. Color-coated aluminum coil width is generally 650-mm, up to mm; color-coated aluminum sheet width is 800-mm, with special sizes up to mm.
• Length: Select length according to application and transportation requirements. Coil length can be customized, typically 2-5 tons per roll; sheet standard length is -mm, with customization available.
• Shape: Choose shape according to application. Products are mainly supplied as coils or sheets; other forms include strips, corrugated sheets, and waffle panels, selectable based on specific needs.

Consider Cost Factors

• Material Cost Prices vary significantly with different alloys and coating systems. Generally, 5-series alloys are more expensive than 3-series, and PVDF coatings cost more than polyester. Choose cost-effective products based on requirements and budget.
• Processing Cost Different alloys and coatings have varying processing difficulties and costs. Some alloys require special equipment or processes, increasing cost. Consider subsequent processing cost and choose easily processed products.
• Installation Cost Product weight, size, and installation method affect installation cost. Lightweight, easy-to-install products reduce installation expenses and construction time. Consider installation convenience when selecting.
• Maintenance Cost Coating type affects maintenance requirements and costs. PVDF coatings generally have lower maintenance due to superior weather resistance and self-cleaning. Choose products with low long-term maintenance needs.
• Total Lifecycle Cost Consider both purchase cost and lifespan to calculate lifecycle cost. High-quality, expensive products may have higher initial investment but lower total cost due to long lifespan and low maintenance.

Haomei Color Coated Aluminum Sheet Coil Quality Control

• Testing: Coating thickness (magnetic particle inspection), adhesion (cross-cut test), color consistency (colorimeter), and salt spray corrosion testing.
• Certification: ASTM B209M, ISO , EN standards.

Production Process of Color Coated Aluminum Sheet Coil

Substrate Preparation

Aluminum Coil Selection: Select suitable aluminum coils as substrates, usually high-quality aluminum alloys, to ensure good processing performance and final results.

Surface Treatment

• Coating Application: After cleaning and pre-treating the surface of the aluminum coil, apply a fluorocarbon or polyester coating. These coatings not only impart color to the aluminum coil but also provide excellent weather resistance and corrosion protection.
• Curing: After the coating is applied, it undergoes high-temperature curing to firmly bond the coating with the surface of the aluminum coil, forming a durable and stable layer.

Forming and Processing

• Cutting and Coiling: The color-coated aluminum coil can be cut, coiled, or further processed to meet different application scenarios.
• Sheet Processing: The color-coated aluminum coil can also be further processed into sheets for use in construction and industrial applications.

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• Pre-painted Aluminum Coil
• Colored Coated Embossed Aluminum Roofing Coil
• Color Coated Aluminum Sheet Coil

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