Aluminum Master Alloys:Usage:As being Modifier, Grain Refiner and additives in Casting Aluminium Alloys, it is mainly used to refine the grain of Aluminum and Aluminum Alloys, and elevate the homogeneity of Alloying Elements.Form and Size: 1. Waffle: about 7.5kg or 8kg.2. Ingot: about 100g, 200g...