Color Coated Aluminium Sheet 1100, 8011, 3003, 5052
Color coated aluminium sheets have become increasingly popular in various industries due to their aesthetic appeal combined with excellent durability and corrosion resistance. Among several alloys used for these sheets, 1100, 8011, 3003, and 5052 is know for their distinctive properties tailored to specific requirements.
What is a Color Coated Aluminium Sheet?
A color coated aluminium sheet is made by treating and painting the aluminium base sheet with multi-layer coatings for enhanced functionality, color variability, appearance durability, and weather resistance. The base aluminium alloys offer mechanical strength, corrosion resistance, and formability, while the coatings protect the surface and improve life span in outdoor conditions or food contact applications.
These sheets combine lightweight, corrosion resistance, and attractive finish-making them perfect for construction, packaging, foils, roofing, and decorative purposes.
Aluminium Alloy Types for Color Coated Sheets
Four alloys dominate the color coated aluminium sheet market: 1100, 8011, 3003, and 5052. Each alloy type is distinct, catering to different technical and performance needs.
| Alloy | Primary Features | Common Temper(s) | Typical Thickness Range (mm) |
|---|---|---|---|
| 1100 | Excellent corrosion resistance, very high ductility, low strength | H14, H24, O | 0.2 – 3.0 |
| 8011 | Superior corrosion resistance in packaging, exceptional formability | H14, H24 | 0.016 – 1.0 |
| 3003 | Moderate strength and good corrosion resistance | H14, H22, H24 | 0.2 – 4.0 |
| 5052 | High strength, excellent corrosion resistance in marine environments | H32, H34 | 0.3 – 6.0 |
Functions & Advantages of Color Coated Aluminium Sheets
- Aesthetic enhancement: Multi-color coatings meet architectural and decorative demands.
- Corrosion protection: Protective (e.g., PVDF or polyester coatings) resist weathering, chemicals, and UV radiation.
- Lightweight and strong: Good strength-to-weight ratio eases installation and transportation.
- Heat reflectance and insulation: Reflective coating options contribute to energy saving in buildings.
- Formability: Varies with alloy to suit bending, rolling, deep draw, or profiling.
- Durability: Protective lacquer reduces oxidation and mechanical wear.
Application Sectors
| Alloy | Primary Industry Use | Typical Products or Applications |
|---|---|---|
| 1100 | Food packaging, signage, cladding | Hats, decorative panels, inner packaging foils |
| 8011 | Food and beverage packaging (foil laminates) | Wrapping foils, flexible packaging layers |
| 3003 | Construction, roofing, transport | Roofing sheets, wall panels, architectural parts |
| 5052 | Marine, transportation, general industrial | Boat hulls, automotive bodies, fuel tanks |
Technical Parameters of Color Coated Aluminium Alloys
The following tables present technical attributes relevant to selection and application.
Chemical Composition (Weight %)
| Element | 1100 | 8011 | 3003 | 5052 |
|---|---|---|---|---|
| Aluminum (Al) | ≥ 99.0 | ≥ 97.0 | ≥ 97.0 | 97.25 – 98.25 |
| Copper (Cu) | 0.05 max | 0.10 max | 0.10 max | 0.10 max |
| Iron (Fe) | 0.95 max | 0.40 max | 0.7 max | 0.40 max |
| Manganese (Mn) | 0.05 max | 0.50 max | 1.0 – 1.5 | 0.10 max |
| Magnesium (Mg) | 0.03 max | 0.05 max | 0.05 max | 2.2 – 2.8 |
| Zinc (Zn) | 0.10 max | 0.40 max | 0.10 max | 0.10 max |
| Silicon (Si) | 0.95 max | 0.50 max | 0.60 max | 0.40 max |
Mechanical Properties by Temper
| Alloy | Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|---|
| 1100 | H14 | 90 – 110 | 35 – 55 | 18 – 35 |
| 8011 | H14 | 75 – 95 | 30 – 40 | 18 – 30 |
| 3003 | H14 | 130 – 155 | 75 – 105 | 12 – 22 |
| 5052 | H32 | 200 – 260 | 140 – 190 | 8 – 12 |
Implementation Standards
Most color coated aluminium sheets comply with the below international/common standards that ensure quality, coating adherence, finish, and mechanical performance.
| Standard | Description |
|---|---|
| ASTM B209 | Standard specification for aluminium and aluminium-alloy sheet and plate |
| EN 485 | Aluminum and aluminum alloys – Sheet, strip and plate – Technical conditions for delivery |
| JIS H4100 | Aluminium and aluminium alloy flat products |
| AAMA 2605 | Specification for high performance fluoropolymer coatings for aluminium extrusion and panels (often used for coatings) |
Alloy Tempering Conditions Explainer
The temper code indicates processing and final mechanical properties:
- O (Annealed): Softest temper with max ductility.
- H14: Strain hardened to a quarter hard condition.
- H24: Strain hardened then partially annealed.
- H32 / H34: Strain hardened and stabilized - medium strength.
These temper designations directly influence the sheet's strength, flexibility, and forming capability.
Coatings and Paint Systems
Common coating technologies applied are:
| Coating Type | Function & Advantages |
|---|---|
| Polyester (PE) | Economical, good weather resistance, vivid colors |
| PVDF (Kynar®) | High UV resistance, excellent color retention |
| Polyvinylidene Fluoride | Superior corrosion and weather protection |
| Primer layers | Ensure adhesion and enhance paint film durability |
Coating thickness typically ranges from 10 to 25 microns, helping prevent substrate corrosion and ensuring prolonged service life in diverse environments.
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