chapter  4
48 Pages

Effects of Alloying Elements on the Heat Treatment of Steel

Further Reading .................................................................................................................211

A steel that contains, in addition to iron and up to 2% carbon, specially introduced chemical

elements not found in a usual carbon steel is called an alloy steel. Chemical elements

purposely added into steel are termed alloying elements. Steels may contain various numbers

of alloying elements, and accordingly they are classified as ternary steels, which have, along

with Fe and C, one specially introduced alloying element; quaternary steels, which contain

two additional alloying elements, and so on. Alloying elements impart a wide variety of

microstructures to steel after heat treatment that gives scope for a wide range of properties.