Constituent 20C15 Material Class 2
(IS: 4367-1991) IS: 1875-1992
Percent Percent
Carbon 0.16 to 0.24 0.15 to 0.25
Manganese 1.30 to 1.70 0.60 to 0.90
Silicon 0.10 to 0.35 0.15 to 0.35
Sulphur, Max 0.050 0.050
Phosphorus, Max 0.050 0.050