Decoration aluminium refers to specially processed aluminium sheets used primarily for decorative purposes in various architectural, furniture, and interior design applications. With its excellent combination of strength, corrosion resistance, surface finish options, and lightweight nature, it has become a favorite material for ornamental cladding, ceiling panels, signboards, and more.
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Features and Advantages
- Aesthetic appeal: Versatile surface finishes including anodized, brushed, mirror, and color-coated options.
- Durability: Naturally corrosion resistant aluminium enhances longevity in indoor and outdoor use.
- Lightweight: Reduced structural load compared to steel or wood alternatives.
- Workability: Easy to cut, bend, weld, and assemble in diverse shapes and sizes.
- Eco-friendly: Aluminium is recyclable with minimal degradation in properties.
Common Alloys for Decoration Aluminium
The most prevalent alloys for decoration aluminium sheets combine admirable corrosion resistance with workable strength and excellent surface finishing characteristics. The selection of alloy depends on application specifics including mechanical demand and aesthetic requirements.
| Alloy Number | Alloying Elements | Typical Applications | Tempering Options |
|---|---|---|---|
| 1050 | 99.5% Aluminum | High corrosion resistance, shaping decor | H14 (cold worked), H24 |
| 3003 | Aluminum + ~1% Mn | Roof panels, interior walls, ceiling clads | H14, H22 |
| 3105 | Al + Mn + Mg | Coated sheets for outdoor facades | H14, H24 |
| 5005 | Al + Mg | High strength decorative facades | H14, H22, H34 |
Temper and Mechanical Properties
The tempering process enhances mechanical properties or prepares sheets for specific applications by controlling hardness and ductility. Typical tempers for decoration aluminium sheets include:
- H14: Strain-hardened, moderately hard, good formability.
- H22: Partial annealed for balance of strength and flexibility.
- H24: Quarter hard, good toughness for bent applications.
- H34: Half hard with enhanced strength.
Mechanical properties (example — Alloy 3003)
| Temper | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (Brinell) |
|---|---|---|---|---|
| H14 | ~65 | 110 | 12-16 | 40 |
| H22 | 90 | 130 | 10-15 | 50 |
| H24 | 115 | 150 | 9 | 60 |
Chemical Composition
| Alloy | Al (%) Min | Si (%) Max | Fe (%) Max | Cu (%) Max | Mn (%) Max | Mg (%) Max | Zn (%) Max | Ti (%) Max |
|---|---|---|---|---|---|---|---|---|
| 1050 | 99.5 | 0.25 | 0.40 | 0.05 | 0.03 | 0.03 | 0.05 | 0.03 |
| 3003 | 97.0 | 0.60 | 0.70 | 0.05 | 1.0 | 0.10 | 0.05 | 0.05 |
| 3105 | 96.6 | 0.3 | 0.7 | 0.02 | 0.50 | 0.30 | 0.10 | 0.03 |
| 5005 | 97.0 | 0.40 | 0.70 | 0.20 | 0.10 | 0.70-1.20 | 0.10 | 0.03 |
Implementation Standards
Production and inspection of decoration aluminium sheets commonly conform to various international standards to assure consistency and reliability:
- ASTM B209 / B209M: Standard specification for aluminium and aluminium-alloy sheet and plate.
- EN 485-2: Aluminium and aluminium alloys — Sheet, strip, and plates — Part 2: Tolerances on dimensions and shape.
- GB/T 3880 / GB/T 3190: Chinese standards for aluminium purity and chemical composition.
- ISO 6361-1/2: Specifications for textured, coated, and anodized aluminium products.
Surface finish processes might further comply with respective treatment standards such as:
- ISO 7599: Anodic oxidation coatings on aluminium and its alloys (anodizing).
- Qualicoat Specification: For durable powder coating.
Applications of Decoration Aluminium
- Architectural cladding & facades: Lightweight and long-lasting panels enhance aesthetic appeal with customized color coatings.
- Ceiling & partition panels: Smooth and reflective finishes that integrate with modern designs.
- Furniture: Al sheets formed into modern cabinet fronts, decorative trims, tabletop overlays.
- Signboards & advertising displays: Corrosion resistance plus excellent surface printability.
- Transportation interiors: Train, bus, and elevator trims with scratching resistance coatings.
