When the classic 55% aluminum-zinc-silicon alloy coating meets the reactive element magnesium, what chemical reaction occurs?

Xinyu High-Aluminum Aluzinc-Magnesium (AZM) coated steel sheet is an upgrade based on the conventional 55% Al-Zn-Si alloy coated steel. In addition to the traditional aluminum, zinc, and silicon elements, magnesium is incorporated into the coating in an optimal ratio. Through Xinyu's advanced coating production control technology, the newly added magnesium element significantly enhances the reactivity of the alloy coating, reducing the consumption rate of the coating and thus ensuring superior performance.

Element Functions

Through the synergistic action of the elements:MgZn₂ forms an isolating protective layer on cut edges and exposed sections.Mg₂Si further reinforces the barrier protection within the coating.The combination of these two produces a synergistic 1+1 > 2 effect, providing the product with a resilient anti-corrosion "shield" while also enhancing the steel's hardness and damage resistance.

Test Results

Test data shows that for High-Aluminum Aluzinc-Magnesium samples with a coating weight of 150 g/m², the neutral salt spray test (SST) duration reaches ≥4800 hours with no red rust formation, offering robust resistance against corrosive external environments such as humidity.

Superior Performance

(1) Exceptional corrosion resistance and resistance to acids and alkalis, with particularly outstanding performance on flat surfaces, effectively extending service life and reducing maintenance costs throughout the entire lifecycle.

(2) Excellent mechanical processability ensures stable performance during cutting, bending, stamping, and other processing operations, meeting customized design requirements.

(3) Superior abrasion resistance protects against damage from daily friction and impact.

Application Fields

With its outstanding performance, Xinyu High-Aluminum Aluzinc-Magnesium products perfectly meet the stringent application standards of multiple fields, including construction and home appliances.

Currently, Xinyu has established a comprehensive product matrix of coated steel sheets featuring diverse performance profiles. The five core products — Galvanized Steel, Galvalume Steel, Aluzinc Steel, Medium-Aluminum Zinc-Aluminum-Magnesium Steel, and High-Aluminum Aluzinc-Magnesium Steel — work in synergy. Leveraging their differentiated performance advantages, they precisely match the demanding requirements of sectors such as construction, home appliances, and photovoltaics, providing industry clients worldwide with customized, high-quality coated steel solutions.