Colour Coated Aluminum Strip Sheet Width Ppgi
Colour coated aluminum strip sheet is a pre-painted aluminum product supplied in coil, strip, or sheet form for roofing, cladding, ceiling, signage, shutter, appliance, and decorative panel systems. In many projects, it is selected as a lighter, corrosion-resistant alternative to traditional PPGI while still delivering bright color, stable coating adhesion, and efficient roll-forming performance.
The product combines an aluminum base metal with chemical pretreatment, primer, and topcoat layers. Width control is especially important because many downstream lines require accurate feed dimensions for slitting, profiling, stamping, and continuous panel production.
Product Character
Colour coated aluminum strip sheet is engineered for customers who need a ready-to-fabricate metal surface with reliable appearance and predictable processing behavior. The aluminum substrate provides low density, natural oxidation resistance, and good formability. The paint system adds color consistency, UV protection, stain resistance, and improved surface hardness.
Compared with PPGI, aluminum has no red rust risk, offers better weight reduction, and is easier to handle during installation. For coastal, humid, or chemically active environments, aluminum-based coated strip can extend service life when the correct alloy and coating are selected.
For customers sourcing Color Coated Aluminum Strip, width tolerance, coating thickness, gloss, and bend performance should be reviewed together rather than separately. A beautiful color is only valuable when the coil also runs smoothly on forming equipment.
Main Features
| Feature | Practical Value |
|---|---|
| Lightweight structure | Reduces transport load and installation effort compared with steel-based PPGI |
| Strong corrosion resistance | Suitable for humid, coastal, and outdoor environments when matched with proper coating |
| Stable color finish | Supports architectural consistency across batches and projects |
| Good forming performance | Can be slit, bent, roll-formed, embossed, and stamped |
| Accurate width supply | Improves production efficiency on panel and trim forming lines |
| Recyclable base metal | Aluminum can be recovered and reused with high material value |
Typical Technical Specifications
| Parameter | Common Range | Notes |
|---|---|---|
| Product form | Coil, strip, sheet | Supplied for slitting, forming, or direct fabrication |
| Thickness | 0.18-3.00 mm | Custom thickness available by application |
| Width | 20-1600 mm | Narrow strip and wide sheet options supported |
| Width tolerance | +/-0.10 to +/-1.00 mm | Depends on width, thickness, and edge condition |
| Coil ID | 405 mm, 505 mm, 508 mm | Matched to customer decoiler |
| Coil OD | 800-1800 mm | Based on coil weight and packing method |
| Coating type | PE, HDP, SMP, PVDF | Selected by weathering requirement |
| Paint thickness | 15-35 microns | Primer plus topcoat, optional back coat |
| Gloss | 10-90 GU | Matte, semi-gloss, and high-gloss finishes |
| Surface | Smooth, embossed, stucco, wood grain, stone pattern | Decorative options for indoor and outdoor use |
Aluminum Alloy Selection
The alloy determines strength, formability, corrosion behavior, and final panel stiffness. For most colour coated strip sheet applications, 1xxx, 3xxx, and 5xxx series aluminum are preferred.
| Alloy | Temper | Main Characteristics | Common Uses |
|---|---|---|---|
| 1050 | H14, H24 | High purity, excellent workability, soft forming | Ceiling strip, lighting parts, insulation jacketing |
| 1060 | H14, H24 | Good conductivity, high ductility, clean surface | Signage, decorative sheet, general cladding |
| 1100 | H16, H24 | Balanced corrosion resistance and formability | Curtain wall trim, interior panels |
| 3003 | H24, H26 | Manganese alloyed, stronger than pure aluminum | Roofing, gutter, roller shutter, composite panel skin |
| 3004 | H26, H46 | Higher strength, good roll-forming stability | Building panel, ceiling, exterior facade |
| 3105 | H24, H26 | Good painted surface performance and moderate strength | Siding, roofing accessories, pre-painted sheet |
| 5052 | H32, H34 | Stronger, excellent marine corrosion resistance | Coastal panels, transport parts, outdoor equipment |
Typical Chemical Composition
Values vary by standard and mill certificate. The table shows typical reference ranges for frequently used substrates.
| Alloy | Si | Fe | Cu | Mn | Mg | Zn | Al |
|---|---|---|---|---|---|---|---|
| 1050 | <=0.25 | <=0.40 | <=0.05 | <=0.05 | <=0.05 | <=0.05 | >=99.50 |
| 1060 | <=0.25 | <=0.35 | <=0.05 | <=0.03 | <=0.03 | <=0.05 | >=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 | 1.00-1.50 | - | <=0.10 | Balance |
| 3105 | <=0.60 | <=0.70 | <=0.30 | 0.30-0.80 | 0.20-0.80 | <=0.40 | Balance |
| 5052 | <=0.25 | <=0.40 | <=0.10 | <=0.10 | 2.20-2.80 | <=0.10 | Balance |
Mechanical Performance
| Alloy and Temper | Tensile Strength | Yield Strength | Elongation | Forming Behavior |
|---|---|---|---|---|
| 1060 H24 | 95-145 MPa | 75-120 MPa | 3-8% | Excellent for bending and light forming |
| 3003 H24 | 145-195 MPa | 115-165 MPa | 4-10% | Stable for roofing and panel profiles |
| 3004 H26 | 190-240 MPa | 160-210 MPa | 2-6% | Better stiffness for exterior products |
| 3105 H24 | 150-200 MPa | 120-170 MPa | 4-9% | Popular for coated building sheet |
| 5052 H32 | 210-260 MPa | 160-215 MPa | 5-12% | Strong option for demanding environments |
Coating Systems and Performance
The paint system should match the location, service life expectation, forming radius, and cleaning conditions. PE coating is economical and widely used indoors or in mild outdoor environments. PVDF offers excellent weather resistance for building envelopes and coastal exposure. Customers requiring long exterior life may compare PVDF Coated Aluminum Strip with PE or HDP systems during design selection.
| Coating | Typical Thickness | Weather Resistance | Recommended Environment | Advantage |
|---|---|---|---|---|
| PE | 15-25 microns | Moderate | Interior panels, ceiling, signage | Cost-effective and colorful |
| HDP | 20-30 microns | Good | Outdoor wall panel, roofing accessory | Better UV retention than PE |
| SMP | 20-30 microns | Good | Industrial roofing and cladding | Balanced hardness and durability |
| PVDF | 25-35 microns | Excellent | Facade, coastal building, premium roofing | Superior color and gloss retention |
Width Control for PPGI-Style Production
The phrase Width PPGI is often used by buyers who process pre-painted metal on roofing, cladding, or panel lines originally designed for PPGI. Colour coated aluminum strip sheet can be supplied in compatible widths so the customer can use existing decoilers, roll formers, cutters, and stacking systems with limited adjustment.
| Application Line | Common Input Width | Suggested Aluminum Thickness | Notes |
|---|---|---|---|
| Roofing tile line | 914-1250 mm | 0.35-0.80 mm | Lightweight roof panel with good corrosion resistance |
| Wall cladding line | 1000-1500 mm | 0.50-1.20 mm | Suitable for flat, corrugated, or profiled panels |
| Ceiling strip line | 20-600 mm | 0.18-0.60 mm | Requires smooth coating and accurate slitting |
| Gutter and downpipe line | 200-600 mm | 0.50-1.00 mm | 3003 or 3105 commonly selected |
| Roller shutter line | 40-150 mm | 0.25-0.60 mm | Requires good bending and coating flexibility |
| Sign blank production | 600-1600 mm | 0.50-2.00 mm | Smooth finish and flatness are important |
Application Fields
Colour coated aluminum strip sheet serves both functional and decorative purposes. In building construction, it is used for roofing panels, facade panels, gutters, downpipes, ceiling strips, curtain wall trim, garage doors, and flashing. In transportation, it supports trailer panels, bus interior panels, vehicle decorative strips, and lightweight body components. In industrial and household fields, it can be used for appliance panels, electronic housings, lamp reflectors, air conditioner parts, and advertising boards.
The product is also suitable for sandwich panels, aluminum composite panel skins, venetian blind strip, bottle cap stock decoration, and insulation jacketing. For customers replacing PPGI, the strongest benefit is often weight saving combined with rust-free edge performance.
Processing and Fabrication Notes
Good downstream performance depends on coil quality and production control. Slitting edges should be smooth to reduce burr scratches during forming. The paint film must resist cracking during T-bend testing, while the substrate temper must support the required bend radius. For roll forming, coil camber and flatness should be controlled to prevent wave, twisting, and misalignment.
During storage, coated aluminum coils should be kept dry, ventilated, and away from alkaline or acidic chemicals. If the material arrives with protective film, the film should be removed within the recommended period, especially after outdoor exposure, to avoid adhesive residue.
Benefits for Buyers
| Buyer Concern | Product Benefit |
|---|---|
| Need lighter panels | Aluminum density is about one-third of steel |
| Concern about red rust | Aluminum does not form red rust at cut edges |
| Need attractive color | Factory coating gives consistent shade and finish |
| Need efficient fabrication | Supplied in slit width or full sheet width for production lines |
| Need outdoor service | PVDF and HDP coatings improve resistance to UV and weathering |
| Need design flexibility | Many colors, gloss levels, textures, and patterns are available |
Purchasing Guidance
When ordering colour coated aluminum strip sheet, customers should confirm alloy, temper, thickness, width, coating type, paint thickness, color code, gloss, coil ID, coil weight, and packing method. For roofing and facade work, weather exposure and local climate should guide the coating choice. For stamping or tight bending, formability and coating adhesion should receive extra attention.
Colour coated aluminum strip sheet Width PPGI provides a practical bridge between the familiar processing format of pre-painted steel and the long-term advantages of aluminum. With accurate width control, suitable alloy selection, and a coating system matched to the environment, it delivers dependable performance for manufacturers, contractors, and distributors seeking attractive, durable, and easy-to-process metal products.
