Color-coated aluminum coils are color-coated on aluminum coil. Common fluorocarbon color-coated aluminum and polyester color-coated aluminum are widely used in aluminum-plastic panels, aluminum veneers, and aluminum honeycomb panels. Aluminum ceiling, roof surface, leftovers, cans, and electronic products. Its performance is very stable and not easy to corrode. After special treatment, the surface can reach 30 years of quality assurance. The weight per unit volume is the lightest among metal materials.

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The color-coated aluminum coil is processed by washing, chromizing, roll coating, baking, etc., and the aluminum coil surface is coated with various color paint coatings.

Differences between Prepainted Aluminum Coil and Prepainted Steel Coil

The difference between polyester and fluorocarbon coating (how to choose different coatings):

Polyester coating (PE)

It is a kind of anti-UV ultraviolet coating. The polyester resin is a polymer containing an ester bond in the main chain as a monomer. Ton acid resin is added. The ultraviolet absorber can be divided into matt and high gloss series according to the gloss. Especially suitable for interior decoration and advertising boards.

Fluorocarbon coating (PVDF)

It is made by mixing fluorocarbon resin with fluoroalkene as the basic monomer, pigment, alcohol ester solvent and additives. After baking at high temperature to form a film, the molecular structure in the coating is tight, and it has super weather resistance. Fluorocarbon coatings can be divided into traditional fluorocarbon and nano-fluorocarbon coatings according to the surface film-forming structure. Especially suitable for decoration and display of indoor and outdoor decoration, commercial chains, exhibition advertisements in public places.

Coating thickness: PVDF (fluorocarbon)≥25micronPOLYESTER(polyester)≥18micron；

Glossiness: 10-90%；

Coating hardness: greater than 2H；

Adhesion: not less than level 1；

Impact resistance: 50kg/cm, without peeling paint and no cracks. The color of Polyester can be used for 20 years, while fluorocarbon can be used for 30 years without discoloration.

The Characteristic of Color Coated Aluminum Coil

Flatness: No composite high-temperature indentation on the surface. There is no residual stress on the board surface, and it will not deform after shearing.

Decorative: Coated with wood grain and stone grain, it has a realistic sense of real material and a fresh natural beauty. The patterns are made at will, giving customers a wide range of personality choices, which can enrich the humanistic connotation of products and give people more beautiful enjoyment.

Weather resistance: The paint pattern made by coating and baking at high temperatures has high gloss retention, good color stability, and minimal change in color difference. The polyester paint is guaranteed for 10 years and the fluorocarbon paint is guaranteed for more than 20 years.

Mechanical: The use of high-quality aluminum, plastics, and adhesives, using advanced composite technology. The product has the bending and bending strength required by the decorative board. In the four seasons, the changes in wind pressure, temperature, humidity, and other factors will not cause bending, deformation, and expansion.

Environmental protection: Resistant to salt and alkali acid rain corrosion, it will not corrode and produce poisonous bacteria, does not release any toxic gas, does not cause corrosion of keel and fixed parts.

Flame retardancy: not less than B1 level according to national regulations.

Material grade of aluminum coil:  

series:

The series aluminum plate is also called the pure aluminum plate. Among all the series, the series belongs to the series with the most aluminum content. The purity can reach more than 99.00%. The price is relatively cheap. Most of the circulation in the market is and series.

series：

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2A16 (LY16) 2A06 (LY6) series aluminum plate is characterized by high hardness, of which the content of copper is the highest, about 3-5%.

series:

Mainly represented by 3A21. It can also be called anti-rust aluminum plate.  The production process of the series aluminum plate of our nation is excellent. series aluminum plate is made of manganese as the main component, with content between 1.0-1.5. It is a series with good anti-rust function.

series:

The aluminum plate represented by the 4A01 series belongs to the series with the higher silicon content. The silicon content is usually between 4.5-6.0%. It belongs to construction materials, mechanical parts, forging materials, welding materials， with a low melting point, and good corrosion resistance.

Product description: Having the characteristics of heat resistance and wear resistance.

series:

With ...5A05 series as representatives, the series aluminum plate belongs to the more commonly used alloy aluminum plate series, and the main element is magnesium, and the magnesium content is between 3-5%. It can also be called aluminum-magnesium alloy. The main characteristic is low density, high tensile strength, and high elongation.

series:

with as a representative, it mainly contains two elements of magnesium and silicon. is a cold-processed aluminum forged product, which is suitable for applications that require high corrosion resistance and oxidation.

General characteristics of : Having excellent interface characteristics, easy coating, high strength, good usability, and strong corrosion resistance.

The advantages of Color Coated Aluminum Coil:

What’s The Difference Between Powder Coated and Coil Coated (Pre-Painted) Aluminum?

Different projects, architectural designs, and buildings have different material requirements. The material you choose can also significantly impact the longevity, aesthetics, and overall performance of your structure. Two options that often stand out and provide extra protection are powder coated aluminum and coil-coated aluminum, but what’s the difference? Both offer excellent protection and aesthetic appeal, so understanding their differences is crucial for making informed decisions in various applications.

Powder Coated Aluminum

Powder coating is a popular finishing technique known for its durability, versatility, and environmental friendliness. It involves the application of a dry powder to a substrate, which is then heated to form a smooth, uniform, and durable finish. Aluminum, being inherently resistant to corrosion and lightweight, serves as an ideal substrate for powder coating. This product also comes pre-painted or finished, after the powder coat has been applied. This eliminates the need for a painting team to finish the job. Powder coated aluminum is:

• Durable: Powder coated aluminum exhibits exceptional resistance to corrosion, fading, chipping, and scratching, making it suitable for outdoor applications exposed to harsh weather conditions.
• Aesthetically Versatile: Products that are powder coated can then be finished with a wide range of color options and textures, including glossy, matte, textured, and metallic effects.
• Sustainable: Unlike liquid coatings, powder coating generates minimal volatile organic compounds (VOCs) and hazardous waste, making it a more eco-friendly choice.
• Easy to Maintain: Powder coated aluminum surfaces are easy to clean and maintain, requiring only mild detergent and water to remove dirt and debris.

Powder coated aluminum is used in many different applications, even beyond the architectural realm:

• Architectural Cladding: Powder coated aluminum panels and planks are commonly used in building facades, curtain walls, and exterior cladding systems due to their durability and aesthetic appeal.
• Automotive Components: From rims and wheels to trim and grilles, powder coated aluminum finds applications in various automotive parts, offering both style and protection.
• Outdoor Furniture: Patio furniture, garden fixtures, and decorative elements often feature powder coated aluminum for its resistance to rust and fading.

Coiled Coated Aluminum

Coil-coated aluminum, also known as pre-painted steel, involves the application of organic coatings to steel coils before they are formed into finished products. This process enhances the steel’s corrosion resistance and aesthetic appeal, making it a preferred choice in many industries. Liquid coatings are most commonly used in this process, alkyd resins, solution vinyl resins, and, to a certain extent, epoxy resins are used. Coil coating, is an efficient method for uniformly applying high-quality coatings onto metal surfaces and provides:

• Strength and Rigidity: Steel inherently possesses high tensile strength and rigidity, providing structural integrity and durability.
• Uniform Coating Thickness: Coiled coating processes ensure consistent and uniform application of coatings.
• Weather Resistance: Coated steel offers excellent resistance to UV radiation, moisture, and extreme temperatures, making it suitable for outdoor applications in diverse climates.

Coil-coated aluminum has a wide range of uses across multiple industries:

• Building Roofing and Siding: Coated steel roofing panels and siding sheets are widely used in residential, commercial, and industrial construction for their durability and weather resistance.
• Appliances: Household appliances such as refrigerators, washing machines, and ovens often feature coiled coated steel exteriors for their sleek appearance and resistance to stains and scratches.
• Automotive Industry: Coated steel is extensively used in the automotive sector for body panels, chassis components, and underbody protection due to its strength and formability.
• Industrial Equipment: Machinery, storage tanks, and industrial enclosures benefit from the protective coatings of coiled coated steel, ensuring longevity and performance in harsh operating environments.

Choosing the Right Product for Your Needs

Coil stock finds its utility in crafting items such as gutters and flashings, typically on-site. Skilled tradesmen can tailor-make various components from it, the paint used remains flexible even when the material is bent or shaped. On the contrary, powder coating tends to crack under such manipulation. Powder coating, although offering superior quality, comes at a higher cost, and aligns with the premium quality of aluminum extrusion. In contrast, the more economical thin gauge coil is a better match for wet paint, which is generally cheaper.

While both powder coated aluminum and coil coated aluminum offer exceptional durability and corrosion resistance, their suitability in specific applications varies. Factors such as budget, design requirements, and environmental conditions can play a part in the decision-making process. Understanding the unique properties and advantages of each material is essential for making informed decisions and achieving optimal results in construction, manufacturing, and design projects. Whether you opt for the versatility of powder coated aluminum or the robustness of the coil coat process both materials can deliver superior performance.

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Angela Mortimer

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