NON-ALLOY /CARBON STEEL/PLAIN CARBON /UN-ALLOYED STEEL

These steels by definition do not contain any alloying element in specified proportions (i.e beyond those normally present in commercially produced steel in industry).

Non- alloy steel is divided into 3 categories namely

Low carbon steel or Mild steel (normally containing upto 0.3% carbon
Medium carbon steel (normally containing 0.3 – 0.6% carbon) and
High carbon steel (normally containing more than 0.6% carbon).

Non-alloy steel constitutes approx. 90% of total steel production, of which, mild steel takes the lion’s share.