<p>A hot dip zinc-aluminum alloy coating process is disclosed, which comprises the step coating a steel or iron materials by adding into a coating bath comprising 0.10 to 10 % by weight of aluminum, 1.5 to 10 % by weight of copper and the remainder consisting essentially of zinc by a direct immersion method which is simple and economical. The process enables the preparation of a highly corrosion-resistant hot dip zinc-aluminum alloy-coated material having a thick coated layer having a thickness of 30 mu m or more and also having a good appearance. <IMAGE></p>
