SPARK range of products are specifically studied for the production of objects obtained by investment casting. SPARK master alloys are indicated in the realization of castings with and without stones in place. The main feature of these products is the high resistance to oxidation and the maintenance of if also during the reuse of the scraps. Through deep specific researches in METALTECH InnovAction laboratories, the composition of SPARK  products have been developed to give the highest surface quality, ensuring a substantial smoothness after casting and a consequent easiness of polishing, decreasing the working time spent for it.