... to produce qualified and special type steel.Specification of Silver White Spherical Passivation Magnesium Granules:2-0.21mm(10-65 ... Property and Technique StandardThe passivation magnesium powder looks grey and white, and the granule shape is roundness or unequal roundness. ... and other appearance of the passivation magnesium powder.Content of granularity, loose density, Mg, CaO, CaF2, MgO, P, S and ...