Color Coated Brushed Aluminum Coil is a high-performance decorative and functional aluminum product combining surface aesthetics with protective coatings. It features a mechanically brushed finish for a directional, metallic texture, followed by durable color coatings to produce a wide range of visual effects (metallic, woodgrain, solid color). The product is widely used in architectural facades, interior design, appliance panels, signage, and transport industry components where both appearance and corrosion resistance are required.
advantages:
- Attractive, modern brushed appearance with consistent grain
- Enhanced corrosion resistance and UV stability from color coatings
- Lightweight and high strength-to-weight ratio
- Formable and suitable for various fabrication processes (bending, stamping, roll forming)
- Wide range of colors, textures, and coating systems (PVDF, polyester, SMP)
Features
- Brushed surface finish: directional, uniform grain achieved through controlled mechanical brushing
- Color coating systems: PVDF (Kynar/Hylar), SMP (Silicone Modified Polyester), Polyester — selected based on durability and cost requirements
- Pre-treated and primer-coated substrate: improved adhesion and corrosion protection
- Available in various alloys and tempers: typically 3003, 3105, 5052, 5005 in H14/H16/H24 tempers
- Thickness range: commonly 0.3 mm to 1.5 mm (customizable)
- Width range: typically 500 mm to 1600 mm (customizable)
- Surface protection: peelable film or kraft paper during transport
- Finishing options: clear coat, embossed or smooth, anti-fingerprint treatments
Typical Chemical Composition (Representative Alloys)
Note: Actual composition depends on the chosen alloy. Typical commercial alloys used for color coated brushed coils are 3003, 3105, 5005, and 5052. The table below gives representative ranges.
| Element | 3003 (wt%) | 3105 (wt%) | 5005 (wt%) | 5052 (wt%) |
|---|---|---|---|---|
| Al | Balance | Balance | Balance | Balance |
| Si | 0.6 max | 0.6 max | 0.5 max | 0.25 max |
| Fe | 0.7 max | 1.0 max | 0.7 max | 0.4 max |
| Cu | 0.05 max | 0.05 max | 0.1 max | 0.15 max |
| Mn | 1.0–1.5 | 0.3–1.0 | 0.1–0.5 | 0.1–0.5 |
| Mg | 0.1 max | 0.1 max | 0.8–1.2 | 2.2–2.8 |
| Cr | — | — | 0.05–0.25 | 0.15–0.35 |
| Zn | 0.25 max | 0.25 max | 0.25 max | 0.25 max |
Mechanical Properties (Typical)
Mechanical properties vary by alloy and temper. The table below lists typical properties for commonly used alloys in their work-hardened tempers.
| Alloy & Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HV or HB) |
|---|---|---|---|---|
| 3003 H14 | 150–210 | 70–120 | 6–12 | ~40–50 HRB |
| 3105 H14 | 120–170 | 60–110 | 6–12 | ~40–50 HRB |
| 5005 H14 | 105–155 | 55–105 | 8–12 | ~35–45 HRB |
| 5052 H32 | 220–300 | 120–230 | 7–15 | ~55–65 HRB |
Coating Systems and Performance
Different coatings are used depending on service life, UV exposure, and aesthetics.
| Coating Type | Typical Topcoat Thickness (µm) | Properties | Typical Warranty |
|---|---|---|---|
| PVDF (Kynar 500/HX) | 20–30 | Exceptional UV, color, chalk resistance; chemical resistance; premium durability | 20–30 years (architectural) |
| SMP (Silicone Modified Polyester) | 18–25 | Good color retention, cost-effective, good adhesion | 10–15 years |
| Polyester (TGIC-free) | 12–20 | Economical, suitable for interior use or low UV exposure | 5–10 years |
| Clear Coat (over brushed) | 5–15 | Enhances gloss and scratch resistance, maintains brushed texture | N/A (depends on main coat) |
Performance test metrics (typical):
- Salt spray resistance: 500–2000 hours depending on pre-treatment and alloy
- Humidity resistance: 1000+ hours for PVDF systems
- UV/Color fastness: Delta E <5 over warranty period for PVDF systems (under standard test conditions)
Technical Specifications
| Parameter | Typical Range / Value |
|---|---|
| Base Material | Aluminum coil (3003 / 3105 / 5005 / 5052) |
| Thickness | 0.3 mm – 1.5 mm (customizable) |
| Width | 500 mm – 1600 mm (customizable) |
| Coil ID | 508 mm (20") or 610 mm (24") or per customer request |
| Coil Weight | 2,000 kg – 8,000 kg (depending on thickness and width) |
| Surface Finish | Brushed (grain sizes: #3, #4, #6 common) |
| Coating Weight (Top) | 12 – 30 µm (depending on system) |
| Coating System | Pre-treatment + Primer + Topcoat (PVDF/SMP/Polyester) |
| Backside | Uncoated / Primer coated / Paint (as required) |
| Formability | Good for bending, roll forming, stamping |
| Temperature Range for Service | -40°C to +120°C (coating dependent) |
| Packing | Export-standard wooden crates, palletized with protective film |
Surface Finishes and Options
- Brushed grain directions: longitudinal (standard) or custom
- Grain sizes: coarse to fine (e.g., #3 coarse, #4 medium, #6 fine)
- Color options: RAL, Pantone, metallics, faux wood patterns
- Special textures: embossed, matte, gloss, anti-fingerprint topcoat
- Edge options: slit coils, cut-to-length sheets, pre-punched holes
Applications and Use Cases
Color Coated Brushed Aluminum Coil is used where appearance and performance meet. Typical applications include:
- Architectural claddings and facades — modern brushed metallic looks with color stability and weather resistance
- Interior wall panels and ceilings — lightweight, attractive finishes for commercial spaces
- Elevator doors and interiors — durable, scratch-resistant surfaces with premium aesthetics
- Appliance panels — refrigerators, ovens, and range hoods where brushed metal appearance is desired
- Signage and advertising — durable outdoor signage with color stability and reflectivity control
- Transportation interiors and exteriors — buses, trains, yachts for decorative panels and trim
- Furniture and retail fixtures — durable, formable panels with consistent grain
- Electronic enclosures and front panels — EMI-friendly aluminum substrate with cosmetic finish
Benefits
- Aesthetic versatility: wide color palette and brushed texture deliver premium visual appeal
- Durability: coatings (especially PVDF) provide long-term color and gloss retention and chemical resistance
- Corrosion resistance: aluminum substrate plus pre-treatment and coating protect in diverse environments
- Lightweight: reduced structural load and easier handling compared to steel alternatives
- Formability: suitable for deep drawing, bending, roll forming, and stamping without significant cracking (depending on alloy/temper)
- Recyclability: aluminum is highly recyclable, supporting sustainable design goals
- Cost-effectiveness: long service life, low maintenance reduces life-cycle costs
Handling, Forming, and Installation Guidelines
- Avoid sharp bends exceeding minimum bend radius for the chosen alloy and temper to prevent coating cracking.
- Use protective films during fabrication when possible; remove only after installation to avoid scratches.
- Recommended minimum bend radius: 1.0–2.5 times material thickness (verify with supplier for specific alloy/temper).
- For welding or brazing, edge preparation and local recoating/patching may be required to restore corrosion protection.
- Store coils in a dry, ventilated area; prevent direct contact with dissimilar metals and corrosive agents.
- Clean with mild detergents; avoid abrasive cleaners that can damage the brushed surface or coating.
Quality Control and Testing
Typical quality tests performed:
- Coating thickness measurement (micrometer, e-coat gauges)
- Adhesion test (cross-cut / pull-off)
- Salt spray (ASTM B117 / ISO 9227)
- Humidity resistance (ASTM D2247)
- UV/Weathering (QUV or natural exposure)
- Color and gloss measurement (spectrophotometer, gloss meter)
- Mechanical tests: tensile, bend, and hardness as per customer requirements
- Visual inspection for brushing uniformity, coating defects, and color consistency
Packaging & Delivery
- Protective peelable film or kraft paper applied to coated surface
- Interleaving paper between layers to prevent marring
- Coil ends protected with cardboard/firewood boards
- Packed in wooden crates or on pallets secured with steel straps and anti-slip materials
- Export documentation and certificates (material test reports, coating data sheets) provided per order
Typical Ordering Information
When requesting a quotation, please provide:
- Alloy and temper (e.g., 3003 H14, 5052 H32)
- Thickness and width required
- Coil ID and maximum coil weight
- Surface finish (grain size, direction)
- Coating system and color (include RAL/Pantone or sample)
- Quantity and delivery schedule
- Special processing (slitting, cut-to-length, perforation, embossing)
Color Coated Brushed Aluminum Coil combines a refined mechanical brushed texture with long-lasting color coatings to provide an elegant, durable, and versatile material solution. It is suitable for a broad range of architectural, interior, and industrial applications where appearance, corrosion resistance, and formability are required. Selecting the correct alloy, temper, and coating system ensures optimal performance tailored to the intended environment and fabrication processes.
For specific project recommendations, sample panels, or technical data sheets (TDS/MSDS), please contact your sales or technical representative with the project requirements and preferred specifications.
