Prepainted Aluminum
Worthwill is a prepainted(color-coated) aluminum factory that supports customized prepainted aluminum coils, sheets, and strips with complete specifications, supporting PE, PVDF, HDP, epoxy and other paints.
- Alloy:
- 1050, 1060, 3003, 3004, 3105, 5005, 5052, 8011, 8079 etc.
- Product type:
- Coil, sheet, strip.
- Temper:
- H14, H16, H18, H19, H22, H24, H26, H28, H42, H44, H46, H48.
- Thickness:
- 0.2mm-2.00mm.
- Width:
- 50mm-2000mm.
- Coating Type:
- Polyester(PE), PVDF, HDP, epoxy paint, varnish coatings.
- Service:
- Brushed, mirror, embossed, lacquering, lubricating, slitting and cutting, etc.
- Standards:
- ASTM-B-209M, BS EN 485-2, BS EN 573-3, GB/T3880-2008.
What is Prepainted Aluminum?
Prepainted aluminum, also known as color-coated aluminum, is a material with a painted surface layer applied to aluminum coils through processes such as cleaning, chroming, roller coating, and baking.
The coating protects the aluminum from UV radiation, corrosive gases, and microbial effects, extending its service life.
It is widely used in construction, decoration, and other industries in the form of sheets or coils.
For prepainted aluminum foil products (thickness ≤0.2mm), please visit Coated Aluminum Foil.
Specifications
Temper:
H14, H16, H18, H19, H22, H24, H26, H28, H42, H44, H46, H48.
Dimensions
- Thickness of prepainted aluminum coil: 0.2mm - 2.00mm.
- Thickness of prepainted aluminum sheet and plate: 2.00mm - 6mm.
- Width: 50mm - 2000mm.
- Core Diameter of coil and strip: 150mm, 405mm, 500mm, 505mm, 510mm.
Coating
- Coating Type: Polyester (PE), PVDF, HDP (High Durability Polyester).
-
Coating Thickness:
- Single coating: 4 - 20 microns.
- Double coating: 25 - 28 microns.
- Triple coating: 30 - 38 microns.
- Coating Brands: AkzoNobel, Nippon, PPG, Beckers.
-
Coating Properties:
- Hardness: > 2H.
- Adhesion: Level 1.
- Gloss: 10 - 90%.
- Impact resistance: 50kg/cm without peeling or cracking.
Colors Chart of Prepainted Aluminum
Worthwill can customize a variety of colors, solid color series include white, black, red, brown, dark bronze etc, metallic colors series, wood grains series, stone grains series.
White
Black
Red
Green
Blue
Yellow
Orange
Gray
Maroon
Lime
Navy
Cyan
Purple
Olive
Teal
Silver
Pink
Light Gray
Gold
Saddle Brown
Dark Slate Gray
Dark Khaki
Indian Red
Tomato
Coral
Dark Orange
Peach Puff
Light Pink
Light Salmon
Orange
Orange Red
Pale Violet Red
Hot Pink
Deep Pink
Dodger Blue
Steel Blue
Sky Blue
Dark Bronze
Metallic Colors
Wood Grains
Stone Grains
PE vs. HDP vs. PVDF vs. Powder Coating
| Aspect | PE Coating | HDP Coating | PVDF Coating | Powder Coating |
|---|---|---|---|---|
| Main Material | Polyester (PE) | High Durability Polyester (HDP) | Polyvinylidene fluoride (PVDF) | Thermosetting resin and pigment |
| Durability | Regular | High | High | High |
| Corrosion Resistance | Good | Excellent | Excellent | Good |
| Weather Resistance | Regular | High | Excellent | Good |
| UV Resistance | Regular | High | Excellent | Good |
| Color Retention | Good | Excellent | Excellent | Good |
| Gloss Retention | Good | Excellent | Excellent | Good |
| Wear Resistance | Regular | High | Excellent | Good |
| Adhesion | Regular | High | Excellent | Good |
| Flexibility | High | High | High | Regular |
| Toughness | High | High | High | Regular |
| Chemical Resistance | Good | Excellent | Excellent | Good |
| Environmental Resistance | Good | Excellent | Excellent | Good |
| Application Method | Spraying, dipping, etc. | Spraying, dipping, etc. | Air spraying, thermal spraying, high-pressure spraying | Electrostatic spraying |
| Coating Thickness | Regular 16 - 35μm, max 100μm | Regular 16 - 35μm, max 100μm | Regular 30 - 35μm, max 100μm | Regular 50 - 60μm |
| Curing Method | Thermal curing | Thermal curing | Thermal curing | Thermal curing |
| Price | Low | Medium | High | Medium |
| Service Life | 5 - 10 years | 10 - 15 years | 15 - 20 years | 7 - 8 years |
Basic Aluminum Materials
| Alloy Grade | Common Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Electrical Conductivity (% IACS) | Thermal Conductivity (W/m·K) | Density (g/cm³) |
|---|---|---|---|---|---|---|---|
| 1050 | O, H14, H18, H19 | 85 - 120 | 35 - 90 | 20 - 35 | 61 | 205 | 2.71 |
| 1060 | O, H14, H18, H19 | 90 - 130 | 40 - 100 | 20 - 35 | 63 | 205 | 2.71 |
| 1070 | O, H14, H18, H19 | 80 - 110 | 30 - 80 | 25 - 35 | 63 | 205 | 2.71 |
| 1100 | O, H14, H18, H19 | 90 - 140 | 40 - 110 | 20 - 30 | 60 | 205 | 2.73 |
| 1200 | O, H14, H18, H19 | 80 - 120 | 30 - 90 | 20 - 30 | 61 | 205 | 2.71 |
| 1350 | O, H14, H18, H19 | 80 - 110 | 30 - 80 | 25 - 35 | 63 | 205 | 2.71 |
| 3003 | O, H14, H18, H19 | 130 - 185 | 55 - 140 | 20 - 30 | 36 | 160 | 2.73 |
| 3004 | O, H34, H36 | 160 - 205 | 150 | 10 - 20 | 36 | 160 | 2.73 |
| 3105 | O, H14, H24 | 140 - 185 | 110 - 150 | 10 - 20 | 41 | 160 | 2.73 |
| 5005 | O, H14, H18 | 110 - 160 | 45 - 120 | 15 - 25 | 35 | 160 | 2.73 |
| 5052 | O, H32, H34, H36 | 190 - 240 | 80 | 12 - 20 | 35 | 160 | 2.73 |
| 5454 | O, H14, H24 | 190 - 240 | 80 | 12 - 20 | 35 | 160 | 2.73 |
| 5754 | O, H14, H24 | 190 - 240 | 80 | 12 - 20 | 35 | 160 | 2.73 |
| 8011 | O, H14, H16, H18 | 100 - 180 | 34 - 170 | 1.7 - 28 | 56 | 210 | 2.73 |
| 8079 | O, H14, H16, H18 | 150 | 120 | 2.2 | 58 | 230 | 2.73 |
Types of Prepainted Aluminum
Paint types include PE (polyester), PVDF, and HDP (high durability polyester) coatings. Surface treatments vary from mirror and brushed to embossed stucco, while textures range from wood grain to stone grain.
PE(Polyester) coated aluminum 
PVDF coated aluminum 
Brushed aluminum sheet 
Polished aluminum sheet 
HDP coated aluminum 
Chameleon coating aluminum 
Stone finish aluminum 
Wooden grain finish aluminum
In addition, we also support epoxy paint, varnish coatings, etc. according to your needs.
Production Process
Step 1: Pre-treatment before coating
- Surface processing, such as brushing, polishing, and embossing.
- Hot water cleaning to remove surface oil and impurities.
- Hot alkali degreasing to make the surface brighter.
- Passivation treatment to facilitate coloring and increase color adhesion.
Step 2: Roller coating (single coating)
- Primer roller coating.
- Drying.
- Cooling.
Step 3: Topcoat roller coating (double coating)
- Topcoat roller coating.
- Drying.
- Cooling.
Step 4: Finishing paint roller coating (triple coating)
- Finishing paint roller coating.
- Drying.
- Cooling.
- Laminating.
Step 5: Subsequent processing
Slitting, cut to size, etc.
Application
Construction
- ACP panels.
- Honeycomb panels.
- Curtain walls.
- Blinds.
- Aluminum for roller shutters.
- Downpipes.
Interior Decorative
- Sublimation aluminum sheet.
- Aluminum for ceilings.
- Kitchens and balconies.
- Bathrooms.
- Trim coils.
Marketing Applications
- Display platforms.
- Signboards.
- Billboards.
- Store fronts.
Transportation and Industrial
- Car body panels.
- Car license plates.
- Industrial plants.
- Air conditioners.
- Appliance panels.
- Road signs.
Advantages and Benefits
Aluminum forms a natural oxide film that protects against further oxidation and corrosion.
Coated with fluorocarbon or polyester paint, prepainted aluminum sheets are fingerprint-resistant, anti-static, and scratch-resistant.
The surface is clean, free from oil contamination, and offers bright, stable colors with excellent decorative properties.
With a density one-third that of steel, aluminum reduces the load on supporting structures, making it suitable for long-span buildings.
The addition of metals like magnesium and manganese enhances the strength and rigidity of aluminum alloy sheets.
Prepainted aluminum has a high recycling value, making it more sustainable and cost-effective compared to ordinary steel plates.
Quality Control and Testing
- Coating Thickness: Measured using a magnetic thickness gauge.
- Color Difference: Detected using a colorimeter.
- Gloss: Measured with a gloss meter (tolerance ±5).
- Adhesion: Cross-cut test.
- Solvent Resistance: MEK wipe test.
- Impact Resistance: Impact test (L3, L4, L5 are qualified).
- Corrosion Resistance: Salt spray test, acid/alkali immersion test, damp heat test.
Why Choose Us
Worthwill is a professional manufacturer of prepainted aluminum coils and sheets. We strictly implement the production standards required by customers, such as ASTM-B-209M, BS EN 485-2, BS EN 573-3, GB/T3880-2008 and other processing and production.
- Professional Manufacturer: Adhering to standards such as ASTM-B-209M, BS EN 485-2, GB/T3880-2008.
- Quality Control: Strict systems for safe production, product testing, and packaging.
- Environmental Compliance: Green production, adhering to local environmental laws.
- RTO Process: Regenerative thermal combustion for exhaust gas treatment, removal efficiency > 98%.
- Packaging: Standard sea transportation packaging, customizable based on customer requirements.
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