Painted aluminum sheet is a novel material with its surface coated in a layer of either fluorocarbon or polyester paint. This coating endows the aluminum sheet with remarkable properties, including UV protection, resistance to acids and alkalis, high weather resistance, among others. It can maintain its quality for up to 20 years when used outdoors.
Signi offers customized production according to customer specifications. Our professional color coating production line guarantees the stable quality of color aluminum sheets, surpassing Baosteel PCM aluminum alloy plated color plates in quality, and provides favorable wholesale prices.
Description of Painted Aluminum Sheet
Painted aluminum sheets undergo thermal expansion and contraction due to temperature fluctuations, which is an inherent phenomenon for metal roofing. They can be directly penetrated for smoke outlets, skylights, and pipe outlets. Special technology ensures the watertightness of accessories.
Due to their excellent flatness, corrosion resistance, decorativeness, and mechanical properties, painted aluminum sheets find applications in architectural decoration, food packaging, electronics, printing, transportation, and various other fields.
Production Process of Painted Aluminum Sheet
Samples are exposed at the Hainan National Exposure Test Site or an equivalent climate environment, following GB/T 9276 standards. Samples are placed at a 45° angle to the south for a 10-year test duration.
Performance of PVDF Color Coated Sheet/Coils
| Item | Test Item | Standard | National standard | Test Result |
| 1 | Color Difference | ECCA T3 | ΔE≤2.0 | ΔE≤1.5 |
| 2 | Gloss Difference | ECCA T2 | ≤10 | ≤5 |
| 3 | Coating Thickness | ECCA T1 | Two layers Min 23μm | ≥25μm |
| Three layers Min 30μm | ≥34μm | |||
| 4 | Pencil Hardness | ASTM D3363 | ≥HB | HB |
| 5 | T-bend | ASTM D4145 | ≤2T | ≤2T |
| 6 | Adhesion | ASTM D3359 | Grade 0 | Grade 0 |
| 7 | Impact | ASTM D2794 | ≥50kg.cm | ≥50kg.cm |
| 8 | Boiling water Resistance | GB/T17748 | 2h No change | 4h No change |
| 9 | Solvent Resistance | ASTM D2248 | 200 times paints remaining | 500 times no break |
| 10 | Acidity Resistance | ASTM D1308 | 5%HCL 24hrs No change | No change |
| 11 | Alkali Resistance | ASTM D1308 | 5%NaOH 24hrs No change color △E≤2.0 | No change |
| 12 | Nitric acid Resistance | AAMA620 | △E≤5.0 | △E≤5.0 |
| 13 | Oil Resistance | ASTM D1308 | 20#oil 24hrs No change | No change |
| 14 | Salt Spray Resistance | ASTM B117 | 4000hrs ≤Grade 1 | No change |
| 15 | Abrasion resistance | ASTM D968 | ≥5L/μm | ≥5L/μm |
| 16 | Dirt Resistance | GB/T9780 | ≤5% | ＜5% |
| 17 | Color retaining | GB/T16259 | 4000 hrs△E≤4.0 | 4000 hrs △E≤3.0 |
| 18 | Gloss weaken Level | 4000 hrs ≤ Grade 2 | 4000 hrs ≤ Grade 2 | |
| 19 | Chalking | 4000 hrs No change | 4000 hrs No change |
Advantages of Painted Aluminum Sheet
Painted aluminum sheet combines the benefits of aluminum plates and organic materials. It possesses high mechanical strength, good toughness, and ease of processing similar to aluminum plates. Additionally, it offers color variety, decorative properties, corrosion resistance, and ease of processing characteristic of organic polymer coating materials. It can be easily processed through punching, bending, deep drawing, welding, etc. The products made from painted aluminum are practical, decorative, easy to process, and durable. The adhesion between the printed layer and the base layer is strong.
Color Aluminum Production Parameters
| Alloy | Coating thickness | Base aluminum width | |
| 1060/1100/3003/3004/5052 or as per customer’s requests | Above 25μm | 1.5-5.0mm for sheet | 1850 for sheet |
| 1100/3003/3004/5052 or as per customer’s requests | Above 35μm | 1.5-5.0mm for sheet | 1850 for sheet |
| 1050/1060/1100 or customize | Above 20μm or customize | 1.5-5.0mm for sheet | 1850 for sheet |
| 1xxx,3xxx and 5xxx or customize | As per customer’s requests | 1.5-5.0mm for sheet | 1850 for sheet |
| 1050/1060/1100/3003/5052 or as per customer’s requests | As per customer’s requests | 1.5-5.0mm for sheet | 1850 for sheet |
| 1060/1100/ 3003/3004 or as per customer’s requests | Above 35μm | 1.5-5.0mm for sheet | 1850 for sheet |
Painted aluminum sheets come in various specifications with coating thicknesses ranging from 4μm to 38μm. The surface can exhibit different patterns, such as wood grain, stone grain, brick patterns, camouflage, fabric, and more.
Available Size Range:
- Thickness: 0.25 ~ 1.8 mm
- Diameter: 200 ~ 1,750 mm
- Length: Coiled, or 2,000 ~ 4,000 mm (*Cut to length service is available for thickness over 0.5mm)
Due to their diverse uses, painted aluminum sheets are commonly employed as roofing materials (aluminum-magnesium-manganese roofing systems), ceiling materials (aluminum alloy ceilings), and brushed plates (surface processed by brush drawing), among other applications.
Several factors influence the quality of roller coating, including the quality of the aluminum substrate, the coating's construction performance, and the material and quality of the coating roller.
Painted aluminum sheet is widely utilized in the construction industry, contributing to the development of modern buildings focused on comfort, lightness, durability, economy, and environmental friendliness. It is recognized for its moderate structural strength, weather resistance, corrosion resistance, fire resistance, acid and alkali resistance, and heat insulation, making it suitable as roofing and exterior wall material with a design service life exceeding 20 years.
Advantages of Painted Aluminum Sheet
Painted aluminum sheet combines the benefits of both aluminum plates and organic materials. It offers high mechanical strength, good toughness, easy processing, and forming like aluminum plates, along with excellent coloring, decorative, and decorative properties characteristic of organic polymer coating materials. Additionally, it provides corrosion resistance and can be readily processed through punching, bending, deep drawing, welding, and more. Products made from painted aluminum are practical, decorative, easy to process, and durable. Moreover, there is strong adhesion between the printed layer and the base layer.
As a painted aluminum sheet manufacturer, Signi Industry Co., Ltd. offers products adhering to national standards. Our color-coated products boast high strength, thermal insulation, corrosion protection, antibacterial properties, self-cleaning, fingerprint resistance, anti-fading, antistatic features, and long life. Painted aluminum sheets and coils are also suitable for use in perforated aluminum panels for facades, aluminum gazebos, and perforated metal screen panels.
Henan Signi Industry Co., Ltd. stands as a reputable painted aluminum sheet manufacturer. Our products have been exported to over 80 countries worldwide. We offer a professional service team providing project analysis and quotation services. Our competitive advantages lie in affordability and high quality. Signi Aluminum has established a reputation for speed and reliability, consistently delivering with the shortest lead times in coil coating.