I got from AAR Grade F :Carbon,percentage Min. 0.45 Max 0.59 Manganese,percentage Min. 0.60 Max. 0.90 Phoshorus,percentage --- --- Max. 0.045 Sulphur,percentage --- --- Max. 0.050 Grade G and H Manganese,percentage Min. 0.60 Max. 0.90 Phosphorus,percentage --- --- Max. 0.045 Sulphur,percentage --- -...