Aluzinc coil – steel sheet coated with an aluminium‑zinc alloy (55% aluminium, 43.4% zinc, and 1.6% silicon) – is rapidly gaining market share as a superior alternative to conventional galvanised steel. Its corrosion resistance is two to six times higher than that of pure zinc coatings of equivalent weight, making it particularly suitable for humid, marine, and industrial environments.

The product’s excellent heat reflectivity and oxidation resistance at elevated temperatures also make it attractive for roofing and siding in hot climates, where it helps reduce building cooling loads. In addition, aluzinc coil offers better formability and weldability than many other coated products, which has boosted its adoption in the automotive and appliance sectors.

Recent industry data show that the global aluzinc coil market is expected to expand at a compound annual growth rate of over 6% through 2030. with Asia‑Pacific leading the demand. Domestic manufacturers are investing in new continuous hot‑dip coating lines to increase capacity and improve surface quality. End‑users are also showing a growing preference for higher coating weights (e.g., AZ150 and above) to ensure longer service life in harsh conditions.

However, industry experts caution that proper handling and storage remain critical, as aluminium‑zinc coatings can be susceptible to edge creep if not correctly processed. As the market matures, standards and testing protocols are being updated to help customers make more informed choices between aluzinc, galvanised, and other coated products for specific applications.

onal steel products remains positive.