In addition to magnesium, magnesium alloy ingot contains aluminum, zinc and other rare elements. And magnesium ingot refers to pure magnesium magnesium ingot. In the past, magnesium ingot is used to use numbers to indicate the different magnesium content of magnesium ingot, such as 1# magnesium ingot that magnesium is not less than 99.95%, 2# magnesium ingot that magnesium is not less than 99.92%, 3# magnesium ingot that magnesium is not less than 99.85%, and so on. Now there are direct magnesium ingot chemical composition to replace, about six numbers: Mg9999, Mg9998, Mg9995A, Mg9995B, Mg9990, Mg9980. However, the general business is still a few magnesium ingots.