Aluwedo® PVDF aluminum composite panels are produced by  advanced automatic machine with German  technique. In two layers of aluminum sheets in high strength with aluminum type A1100, A3003 and A5052. formed by low density polythene (LDPE)  and DUPONT adhesive film with continuously  high temperature and high press.  The surface aluminum sheet  has been coated with 70% PVDF. And the  backside aluminum sheet has been protected with an anti-corrosive primer coat.    Raw Material High strength aluminum alloy A1100, A3003, A5052 LDPE core  Surface coating: PVDF coating, Hylar 5000 or Kynar 500 Dupont Adhesive film         Panel Specifications and Dimension Thickness:3-6mm, Recommended: 4mm Width: 1000-2000mm, Recommended: 1220mm, 1250mm, 1500mm, 2000mm Panel length: up to 5800mm or others as required Aluminum thickness: 0.3~0.5mm *Custom width and length available upon request  subject to minimum quantities Testing Item Standard Result Unit Weight ASTM D792 T 4mm=5.5kg/m2 Thermal Expansion ASTM D696 24-28 Thermal Deformation Temperature ASTM D648 115℃ Thermal Conduction ASTM D976 0.102kcal/m.hr℃ Flexural Rigidity ASTM D393 14.0*10^5 Impact Resistance ASTM D732 1.64kgf Adhesive Strangth ASTM D903 0.77kg/mm Flexural Elasticity ASTM D790 4030kg/mm2 Shear Resistance ASTM D732 2.7kgf/mm2 Fire Propagation ASTM E84 Qualified Wind-Pressure Resistant ASTM E330 Passed Properties Against Water ASTM E331 Passed