An Introduction to Indian Standards on Ferro Alloys

Abstract

Ferro alloys are used in iron and steel industries fordegassification orfor alloying the cast with the desired elements. They are produced with least possible impurities so that their introduction in the melt does not lead to large quantities of impurities in the material. Their sizes are also required to be controlled so that they produce least segregation in the melt within the time frame of processing and so on. The availability of raw materials for manufacturing the Ferro alloys is also an important factor to be considered in the standardization process. Ferro alloys have been taken up for standardization coinciding with the standardization process of iron and steel. The standardization process however accelerated on the advent of development of steel industry in the country. The existing standards are subjected to revision as and when need arises to meet the ever changing demands of engineering and technology. The standards are also brought in line with international standards through harnronizations wherever required to help in the international trade. A standard is subjected to review afterf'ine years of its publication towards revision or reaffirmation depending upon the need.