Ferro manganese is used mainly to counteract the bad effects of sulfur. It also acts as a deoxidizer and combines with sulfur, thereby improving the hot-working properties of the product. It imparts metallurgical properties such as increased strength, hardness toughness and hardenability.
Silico Manganese is a ferro alloy widely used as an alloying agent in the manufacture of steel (especially long products). It provides the necessary toughness and hardness to steel and, hence, is a critical ingredient for steel making.
Ferrochrome is also used when more chromium is needed to be added to carbon steel. High carbon ferrochrome is used in the manufacturing of ball-bearing steels, tool steels as well as other alloy steels. Apart from making stainless steel, low carbon ferrochrome is also used in the manufacturing of acid-resistant steels.
Ferrosilicon is used as a source of silicon to reduce metals from their oxides and to deoxidize steel and other ferrous alloys. This prevents the loss of carbon from the molten steel (so called blocking the heat); ferromanganese, spiegeleisen, calcium silicides, and many other materials are used for the same purpose.[4] It can be used to make other ferroalloys. Ferrosilicon is also used for manufacture of silicon, corrosion-resistant and high-temperature-resistant ferrous silicon alloys, and silicon steel for electromotors and transformer cores. In the manufacture of cast iron, ferrosilicon is used for inoculation of the iron to accelerate graphitization. In arc welding, ferrosilicon can be found in some electrode coatings.