锌铝镁是一种合金金属，主要是用作钢及钢制品的表面防腐蚀处理，包括包括各种锌系列的镀层和大量的钢制件整件浸镀防腐；一开始用作钢制品表面防腐处理的金属是纯锌，随着技术的发展的改进，陆续出现了铝锌合金和锌铝镁合金等合金金属，增加了金属层耐腐蚀的效果。

Zinc aluminum magnesium is an alloy metal, mainly used as surface corrosion prevention treatment of steel and steel products, including various zinc series coating and a large number of steel parts coating anticorrosion; with the development of pure zinc, aluminum zinc alloy and zinc aluminum and magnesium alloy alloy metals, increasing the corrosion resistance effect of metal layer.

锌铝镁镀层钢板的镀层由锌、镁、铝三种金属组成，研发之初是为了替代部分不锈钢的使用场景，不锈钢抗腐蚀性良好，但成本太高，其余镀锌系列钢板表面耐腐蚀性不及不锈钢，且对断面或涂层破损处保护能力差。锌铝镁镀层钢板抗红锈能力及剪切断面的自愈合防腐蚀性优异，初期腐蚀产物会流动并覆盖裸露的基板实现自我保护，且有远优于镀铝锌镀层钢板的焊接性能，解决了普通镀层钢板无法有效保护剪切断口、漏镀点、镀层破损等位置的缺点，是综合性能接近不锈钢的镀层钢板之一。

The coating of zinc aluminum and magnesium coating steel plate is composed of zinc, magnesium and aluminum, at the beginning of the research and development is to replace the use of some stainless steel, stainless steel corrosion resistance is good, but the cost is too high, the rest of the galvanized series steel plate surface is less corrosion resistant than stainless steel, and the protection ability of the section or coating damage is poor.Zinc aluminum magnesium coated steel red rust resistance and shear section self-healing anticorrosion is excellent, initial corrosion products will flow and cover bare substrate to achieve self-protection, and is far better than the welding performance of aluminum zinc plating steel plate, solved the ordinary plating plate cannot effectively protect the shear break, leakage point, coating the disadvantages of the damage, is one of the comprehensive performance closest to the stainless steel coated steel plate.

锌铝镁镀层，是一种综合性能非常优秀的合金金属，制造成本只比铝锌镀层略高，其镀层的耐蚀性远高于纯锌和铝锌合金，同时对钢板切口的保护性能非常好，焊接性能与纯锌钢板相当。目前市场上锌铝镁钢板已经有了直接应用的案例，同时作为彩基板应用的锌铝镁彩涂板也由宝钢实现了量产并且大量应用，直接裸用的锌铝镁钢板属于高铝锌铝镁，作为彩涂基板的锌铝镁钢板属于低铝锌铝镁。未来随着建筑和各行业对于材料的要求逐步提高，锌铝镁镀层钢板有可能会逐渐取代镀铝锌钢板在市场上的应用。

Zinc aluminum magnesium coating, is a very good comprehensive performance of alloy metal, the manufacturing cost is only slightly higher than aluminum zinc coating, its coating corrosion resistance is much higher than pure zinc and aluminum zinc alloy, at the same time, the protection performance of steel plate incision is very good, the welding performance is comparable to pure zinc steel plate.At present, zinc aluminum magnesium steel plate has a direct application of zinc aluminum magnesium steel plate in the market, at the same time as the application of color substrate plate is also mass production by Baosteel and a large number of applications, directly naked zinc aluminum aluminum aluminum magnesium, as a color substrate zinc aluminum magnesium steel plate belongs to low aluminum zinc aluminum magnesium.In the future, with the gradual improvement of material requirements for construction and various industries, zinc, aluminum and magnesium coated steel plate may gradually replace the application of aluminum-coated galvanized steel plate in the market.

宝钢研发的锌铝镁镀层板，与现有的热镀纯锌、热镀锌铁合金及电镀锌汽车板相比，具有更高的耐蚀性、更好的成型性和优异的耐酸碱性。

The zinc, aluminum and magnesium plating plate developed by Baosteel has higher corrosion resistance, better formability and excellent corrosion resistance compared with the existing hot plated pure galvanized, hot plated galvanized ferroalloy and galvanplated automobile plates.