ALUMINIUM SKIN
All ACPs are manufactured using superior alloys aluminium which during its entire life cycle suits to all the stages of its use and processing. The common alloys used in ACPs are AA1100 and AA3003. Any other customer specified alloys apart from the two common alloys can be made on request.
PROPERTIES OF ALUMINUM SKIN
Properties | Standard | Alloys |
Alloy | ASTM B209M | AA 1xxx AA 3xxx |
Temper | ASTM B209M | H18/H16 H18/H16 |
Tensile Strength | ASTM E8 | Rm 140 N/mm² Rm 150 N/mm² |
0.2% Proof Stress | ASTM E8 | Rp₀.₂ 110 N/mm² Rp₀.₂ 120 N/mm² |
Elongation | ASTM E8 | A₅₀ 6% A₅₀ 8% |
Modulus of Elasticity | ASTM E8 | 70,000 N/mm² 70,000 N/mm² |
COATING ON ACP
All ACP sheets of exterior grade are coated with PVDF (Polyvinylidene difluoride) with Kynar 500 (min 70%) or equivalent branded coatings. These coatings are time tested and proven for their excellent weather resistance, resistance to UV radiation, pollution, natural acid rain, smoke and dust. The coating is also popular for its highest gloss retention, colour retention, easy washability and maintenance, best chalk resistant and superior life. The interior grade is coated with high durable Polyester (PE) or anodized to enhance their excellent looks and retain all the qualities in the indoor atmosphere.
PROPERTIES OF PVDF COATINGS
Coating Properties | Standard | Specification |
Lacquering | Chemical | PVDF |
Coating thickness | ASTM D 7091 | ≥30µm |
Gloss at 60° angle | ASTM D 523 | ≥30% |
Formability (T – Bend) | ASTM D 4145 | No Crack T / No Pick off OT |
Cross Hatch | ASTM D 3359 | ≥3A |
Hardness – Pencil | ASTM D 3363 | ≥ 2H |
Abrasion Resistance(Falling sand) | ASTM D 968 | ≥40 Liters/mil |
Immersion Test: 5% HCL | ASTM D 1308 | No Damage |
Immersion Test: 5% H2S04 | ASTM D 1308 | No Damage |
Immersion Test: 5% Na0H | ASTM D 1308 | No Damage |
Immersion Test: Detergent | AAMA 2605 | No Damage |
ALUMINIUM PANEL SHEET ACP
All ACP were manufactured with a superior mix of LDPE complies so as to make the panels LEED or GREEN compliant. The superior & unique mix is added with natural UV which stabilizes and helps to attain most uniform surface, high flexural strength and also increase the shelf life of the panels.
ACP (0.5mm skins and PE core) | Standard | Specification |
Panel Thickness | ——- | 4.0mm |
Weight | ——- | 5.6 Kg/m² |
Polyethylene Core Density | ASTM D 792 | 0.97gm/cm³ |
Peel strength | ASTM D 908 | ≥10 N/mm |
Peel strength | ASTM D 1876 | ≥150 N/25mm |
Tensile Strength | ASTM E 8 | ≥4.5 Kg/mm² |
Yield strength | ASTM E 8 | 4.0 Kg/mm² |
Elongation | ASTM E 8 | ≥5% |
Heat transition coefficient (U-value) | ASTM C 1363 | ≥5.5 W/m²K |
Water Absorption | ASTM D570 | ≤0.02% |
Deflection Temp(under 1.8Mpa) | ASTM D 648 | ≥121℃ |
Thermal Expansion | ASTM D 696 | ≤ 0.024 mm/M/℃ |
Sound Transmission loss(STC) | ASTM E 90 | ≥ 26 db |
ACP FEATURES
Composite panel or aluminium panel sheet is a widely-used term to describe flat panels that consist of a non-aluminium core bonded to two aluminium sheets. Some main features of an ACP are as follows: