What is the black powder on the surface of magnesium ingot AM50A?
These are commonly used in the die casting magnesium alloy brand.
The first is the alloy composition is different: AM50, AM60 is Mg-Al-Mn series, AZ91D is Mg-Al-Zn series.
AZ91D, the most widely used magnesium alloy, has high strength and excellent casting performance. It is used in motorcycles, computer parts, housings, and lids