Hot-dip aluminum-zinc color-coated coil uses hot-dip aluminum-zinc steel sheet (55% Al-Zn) as the new coating substrate, usually containing 150g/㎡ (double-sided). The corrosion resistance of hot-dip aluminum-zinc sheet is 2-5 times that of hot-dip galvanized sheet. Continuous or intermittent use at temperatures up to 490℃ will not cause serious oxidation or scale. The ability to reflect heat and light is twice that of hot-dip galvanized steel sheet, and the reflectivity is greater than 0.75, making it an ideal building material for saving energy.

TYPES OF COLOR-COATED COIL COATINGS

Polyester

Good adhesion, rich colors, a wide range of formability and outdoor durability, medium chemical resistance, and low cost.

Silicone modified polyester

i.e. (SMP), good hardness, wear resistance and heat resistance of the coating, as well as good exterior durability and resistance to chalking, gloss retention, average flexibility, and medium cost.

High durability polyester

i.e. (HDP), excellent color retention and UV resistance, excellent outdoor durability and resistance to chalking, good film adhesion, rich colors, and excellent cost performance.

Polyvinylidene fluoride

i.e. (PVDF), excellent color retention and UV resistance, excellent outdoor durability and resistance to chalking, excellent solvent resistance, good moldability, dirt resistance, limited colors, and high cost.