High Carbon High Carbon Medium Carbon Low Carbon Mn = 76% min. C = 7. 5% max. Si = 0. 5% max. S = 0. 02% max. P = 0. 10% max. SIZE = 10 - 100 MM (90% min. ) OR 5 - 15 MM (90% min. ) Mn = 80% min. C = 1. 5% OR 2% maxSi = 1% max. S = 0. 02% max. P = 0. 15%