ZINCALUME® STEEL
Roof sheeting made from ZINCALUME® steel is available in a range of profiles. The zinc/aluminium alloy coating on ZINCALUME® steel imparts corrosion resistance of up to four times the life of galvanised steel.
BlueScope Steel’s proprietary metallic coating technology – ZINCALUME® steel is superior in corrosion performance under varied conditions, when compared with other galvanised steel (Figure 1).
Figure 1: Cross section of ZINCALUME® steel
ZINCALUME® steel comprises 43.5% zinc, 55.0% aluminium and 1.5% silicon. The minimum coating mass of 150 g/m2 offers a high level of corrosion resistance.
ZINCALUME® steel exhibits a complex coating structure consisting of both zinc-rich and aluminium-rich areas. The zinc rich area provides excellent sacrificial protection, while the aluminium rich area provides durable barrier protection. It is the combination of these two characteristics that make ZINCALUME® steel durable and effective against corrosion (Figure 2).
Figure 2: Microscopic view of ZINCALUME® steel. The zinc rich area provides excellent sacrificial protection, while the aluminium rich area provides durable barrier protection.
As a pioneer in zinc/aluminium alloy-coated technology, BlueScope Steel is the only manufacturer of ZINCALUME® steel in Malaysia. ZINCALUME® steel undergoes continuous research and development, with stringent product testing in the harshest environments.
ZINCALUME® steel complies with Australian Standards AS1397 and Malaysia Standards MS 1196. Durability and performance is backed by warranty*.
Material Specification
ISO:9001 Certified
