Tailor-Made Alloy Constructional Steels

Abstract

In this paper, a general account is presented of methods of substituting brains for excess steel in constructional applications in which steels are consumed in large tonn-ages. Attention is particularly drawn to the hardenability approach. The specific effects of common alloying elements in steels individually and in combination are outlined. The enhancement of hardenability by small amounts of boron is touched upon and it is emphasized that a little of two or three elements employed in conjunction in ' triple steels ' has often a more potent beneficial effect than the same total alloy content in steel of any one of the three alloying elements. The structural factors in harden-ability which are often ignored, are discussed and conside-ration given to the question of finding the best techni-ques for securing uniform hardenability in the product of an ingot. The subject-matter has been discussed against the background of indigenous alloying elements and the most effective uses to which they could be put for present and future Indian requirements.