锌的化学性质活泼，在常温下的空气中，表面生成一层薄而致密的碱式碳酸锌膜，可阻止进一步氧化，而铝在空气中，可形成不能溶解的氧化物层，在其中起屏障保护功能；试验在同等厚度、镀层、表面处理方式的热镀锌钢板与镀铝锌钢板的前提下。镀铝锌比热镀锌有优异的耐腐蚀性。因为55%AL-Zn的密度比Zn的密度小,所以在重量相同和镀金层厚度相同的情况下,镀铝锌钢板比镀锌钢板的面积大3%以上。镀铝锌由于力学性能的增加，内层基材表面镀层密度较好，含锰量相对高，因此镀铝锌在普通焊接条件下无法焊接，只能通过铆钉等其它方连接。在焊接方面热镀锌钢板表现较好。
The chemical nature of zinc is active, in air at room temperature, a thin and dense alkaline zinc carbonate film is formed on the surface, which can prevent further oxidation, while aluminum can form insoluble oxide layer in air, in which is the barrier protection function; under the premise of hot-dip galvanized steel plate and aluminum zinc steel plate of the same thickness, plating and surface treatment. Aluminized zinc has excellent corrosion resistance over hot dip galvanizing. Because the density of 55%AL-Zn is less than that of Zn, the area of aluminum-plated zinc sheet is more than 3% larger with the same weight and the same gold plating thickness. Due to the increase of mechanical properties of aluminized zinc, the surface coating density of the inner substrate is good, and the manganese content is relatively high, so the aluminized zinc can not be welded under ordinary welding conditions, and can only be connected by rivets and other parties. In welding, hot-dip galvanized steel plate performance is better.
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