Nickel magnesium alloys are master alloys of magnesium which facilitates, Containing nickel higher transfer of magnesium into the liquid cast iron in comparison with pure magnesium due to metal density variations of liquid iron & magnesium. Additions of nimg into liquid iron promotes nodular graphites in ductile iron. Grades ni mgre fepyro nimg 50balance4, 5% either including or excluding1. 00 % max pyro nimg 160balance14, 16%with or without1. 00 % max pyro nimg 200balance18, 20%with or without1. 00 % maxgrades as well as the aforementioned standard grades, Nickel magnesium can be created according to the necessary specifications and dimensions tailored to their intended uses 10, 50 mm 10, 70 mmpacking in steel drums based on demands physical properties melting point 1300, 1320 degree celsiusbulk density 7. 8, 7. 9 g/cm3