Ferroalloys are used in making alloy steels and castings of different special types as addition agents. Ferro alloys are usually made in electric-arc furnaces. Alloy steel have often greater limitations on tramp element concentrations than plain carbon steels. In the iron and steel industry, silicon alloys are used for alloying, deoxidizing and reducing other alloying elements such as manganese, chromium, tungsten and molybdenum. Ferro silicon containing 14-95% silicon are used extensively by the iron and steel industry and silicon is present in most commercial grades of steel and cast iron. Most silicon metal is consumed in the manufacture of aluminium-alloy casting containing from 2 to 25 % silicon. Ferro silicon is produced in several grades to suit the quality & economy requirements of various steel industries. The use of it improves the steel quality by clearing the impurities present in iron. Such steels are suitable for transformer core making & other electrical applications. It can be concluded that there is a good scope for new entrants.
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