Color 0.55mm Aluminium Strip Coils
Color 0.55mm aluminium strip coils combine the light weight and corrosion resistance of aluminum with a factory-applied decorative coating. This thickness offers a practical balance between rigidity, formability, and material economy, making it suitable for roll forming, bending, stamping, slitting, and profile production.
The coil is produced from aluminum sheet that is cleaned, chemically pretreated, coated, oven cured, and precision slit into narrow widths. The finished surface can be supplied in white, black, red, green, yellow, gold, dark red, and custom RAL colors. It provides a clean visual finish while reducing the need for secondary painting after fabrication.
Product Functions and Material Value
A 0.55mm color aluminium strip coil performs both structural and decorative roles. The aluminum base supports lightweight fabrication, while the coating protects the metal surface from moisture, atmospheric exposure, minor abrasion, and common contaminants. Compared with painted steel strip, aluminum strip does not form red rust and can substantially reduce component weight.
| Function | Performance Contribution | Customer Benefit |
|---|---|---|
| Decorative finish | Uniform color, gloss, and surface texture | Attractive finished parts without repainting |
| Corrosion protection | Pretreatment and coating isolate the substrate | Longer service life in indoor and normal outdoor settings |
| Forming support | Suitable tempers allow bending and profiling | Efficient production of shaped channels, trims, and covers |
| Weight reduction | Aluminum has a density of about 2.70 g/cm³ | Easier transport, handling, and installation |
| Thermal response | High thermal conductivity compared with steel | Useful for HVAC, heat-related housings, and insulation systems |
| Processing efficiency | Coil format supports continuous production | Lower fabrication time and material waste |
For general architectural trim, appliance panels, signage, and indoor fabrication, PE-coated material is widely selected. For building facades, roof-edge systems, and locations exposed to stronger UV radiation, PVDF coating offers enhanced weathering stability. Customers can compare coating options through our Color Coated Aluminum Strip range.
Typical Technical Specifications
The final specification should match the end-use forming method, environmental exposure, color requirement, and equipment capability. Width, coil weight, coating thickness, and mechanical properties can be adjusted within agreed production limits.
| Parameter | Typical Range or Value | Notes |
|---|---|---|
| Product name | Color 0.55mm Aluminium Strip Coil | Prepainted and slit aluminum coil |
| Nominal thickness | 0.55 mm | Other gauges available by request |
| Thickness tolerance | ±0.04 mm typical | Subject to alloy, width, and applicable standard |
| Strip width | 20-1,600 mm | Narrow slit coils or master coils available |
| Width tolerance | ±0.5 mm typical for slit strip | Depends on width and slitting agreement |
| Aluminum alloy | 1050, 1060, 1100, 3003, 3105 | 3003 and 3105 are common coated-coil grades |
| Temper | H14, H16, H18, H24, H26 | Selected according to required bendability and strength |
| Coil inner diameter | 405 mm or 505 mm | Other IDs available by agreement |
| Coil outer diameter | Up to approximately 1,500 mm | Limited by coil weight and shipping method |
| Coil weight | 0.5-5.0 tonnes typical | Export packaging can be customized |
| Surface finish | High gloss, semi-gloss, matte, embossed | Protective film optional |
| Color | RAL, Pantone, customer sample | Color variation is controlled by batch standards |
Aluminum Alloys and Temper Conditions
The substrate alloy influences strength, corrosion resistance, and the ability to withstand forming without coating cracks. Pure aluminum grades such as 1050 and 1060 offer excellent corrosion resistance and softness. Alloy 3003 adds manganese for improved strength, while 3105 is frequently used for painted architectural products because it combines workable strength with stable coating performance.
| Alloy | Main Alloying Element | Typical Temper Choices | Suitable Uses |
|---|---|---|---|
| 1050 | High-purity aluminum | H14, H16, H18 | Decorative trims, lighting parts, general indoor products |
| 1060 | High-purity aluminum | H14, H24 | Insulation cladding, channel letters, light-duty profiles |
| 1100 | Aluminum with controlled impurities | H14, H16, H24 | Chemical equipment covers, signage, formed components |
| 3003 | Manganese | H14, H24, H26 | Building trim, appliance panels, roofing accessories |
| 3105 | Manganese and magnesium | H14, H24, H26 | Rainwater systems, siding, shutters, architectural profiles |
| Temper | Material Condition | Forming Characteristic | Typical Selection Reason |
|---|---|---|---|
| H14 | Half-hard | Good balance of stiffness and bendability | General roll forming and moderate bends |
| H16 | Three-quarter hard | Higher strength with reduced ductility | Parts requiring improved shape retention |
| H18 | Full-hard | High stiffness, limited deep forming | Flat panels and simple profiles |
| H24 | Strain hardened and partially annealed | Strong with reliable processing flexibility | Common choice for architectural strip |
| H26 | Higher-strength partially annealed condition | Better rigidity than H24 | Narrow profiles and demanding formed sections |
Chemical Composition of Common Substrate Grades
Composition values are shown as mass percentage limits commonly aligned with EN 573-3 or ASTM alloy definitions. Exact melt certificates should be reviewed for project-controlled requirements.
| Alloy | Si | Fe | Cu | Mn | Mg | Zn | Ti | Al |
|---|---|---|---|---|---|---|---|---|
| 1050 | ≤0.25 | ≤0.40 | ≤0.05 | ≤0.05 | ≤0.05 | ≤0.07 | ≤0.05 | ≥99.50 |
| 1060 | ≤0.25 | ≤0.35 | ≤0.05 | ≤0.03 | ≤0.03 | ≤0.05 | ≤0.03 | ≥99.60 |
| 1100 | Si + Fe ≤0.95 | Included | 0.05-0.20 | ≤0.05 | - | ≤0.10 | - | ≥99.00 |
| 3003 | ≤0.60 | ≤0.70 | 0.05-0.20 | 1.0-1.5 | - | ≤0.10 | - | Balance |
| 3105 | ≤0.60 | ≤0.70 | ≤0.30 | 0.30-0.80 | 0.20-0.80 | ≤0.40 | ≤0.10 | Balance |
Mechanical Properties for 0.55mm Coil
Mechanical data varies by alloy, temper, width, and test direction. The values shown are commonly used reference ranges for 3003 and 3105 color-coated strip in H24 condition.
| Property | Typical 3003 H24 | Typical 3105 H24 | Test Reference |
|---|---|---|---|
| Tensile strength | 130-170 MPa | 145-185 MPa | ASTM B557 or EN ISO 6892-1 |
| Yield strength | ≥115 MPa | ≥125 MPa | ASTM B557 or EN ISO 6892-1 |
| Elongation | ≥3% | ≥3% | Depends on gauge and specimen width |
| Density | 2.73 g/cm³ | 2.72 g/cm³ | Nominal reference value |
| Melting range | Approx. 643-655°C | Approx. 635-655°C | Alloy dependent |
| Thermal conductivity | Approx. 160 W/m·K | Approx. 160 W/m·K | Reference at room temperature |
Coating Systems and Surface Performance
The paint system usually includes chemical conversion treatment, primer, top coat, and optional back coat. Pretreatment improves paint adhesion and contributes to corrosion resistance at cut edges and formed areas. Film thickness is measured after curing.
| Coating System | Top-Coat Thickness | Back-Coat Thickness | Recommended Environment | Typical Service Characteristic |
|---|---|---|---|---|
| PE polyester | 15-25 μm | 5-10 μm | Indoor use and normal outdoor exposure | Economical color retention and good workability |
| SMP silicone-modified polyester | 20-25 μm | 5-10 μm | Moderate outdoor exposure | Improved weathering and hardness |
| PVDF fluorocarbon | 25-35 μm | 5-10 μm | High-UV and demanding architectural use | Strong color retention and weather resistance |
| HDP high-durability polyester | 20-30 μm | 5-10 μm | Exterior cladding and trim | Good balance of durability and cost |
| Coating Property | Typical Requirement | Common Test Method |
|---|---|---|
| Pencil hardness | HB to 2H, coating dependent | ASTM D3363 |
| Adhesion | No paint loss after cross-hatch test | ASTM D3359 |
| Impact resistance | No cracking at agreed impact level | ASTM D2794 |
| T-bend flexibility | 0T-2T, depending on temper and paint | ASTM D4145 |
| Gloss tolerance | Controlled against approved sample | ASTM D523 |
| Color difference | Commonly controlled within agreed Delta E | Spectrophotometer measurement |
Applications for Color 0.55mm Aluminium Strip Coils
This gauge is frequently processed into gutter accessories, downpipe components, ceiling grids, window trims, roller shutter slats, electrical enclosures, lighting housings, appliance bands, sign frames, insulation jacketing, and decorative edge strips. It is also an effective material for roof flashing, fascia systems, partition profiles, and transport interior fittings where low weight is valued.
For clean production, use non-marking rollers, maintain smooth slitting tools, and avoid dragging the painted surface across rough worktables. A generous bend radius is recommended for hard tempers or thick coating systems. Protective film should be removed after installation rather than stored for extended periods in direct sunlight.
Implementation Standards and Quality Control
Color 0.55mm aluminium strip coils can be produced to internationally recognized aluminum and coating standards. The selected standard depends on the destination market and contractual requirements.
| Standard | Scope |
|---|---|
| ASTM B209 | Aluminum and aluminum-alloy sheet and plate requirements |
| EN 485 | Tolerances, mechanical properties, and technical delivery conditions for aluminum sheet and strip |
| EN 573-3 | Chemical composition and alloy designation for wrought aluminum |
| EN 1396 | Coil-coated aluminum and aluminum-alloy sheet and strip for general applications |
| GB/T 3880 | Wrought aluminum and aluminum-alloy plates, sheets, and strips |
| ASTM D3359 | Coating adhesion evaluation by tape test |
Each coil may be supplied with identification information covering alloy, temper, dimensions, color code, coating type, coil weight, production batch, and inspection status. Proper export packaging typically includes interleaving paper or film, moisture barrier protection, edge guards, steel strapping, and reinforced wooden pallets.
Color 0.55mm aluminium strip coils offer a dependable solution for manufacturers seeking consistent dimensions, attractive painted surfaces, efficient processing, and long-term material value.
