Used Rails R50 - R65
Nominal Chemical Composition
Carbon (C) 0.20% to 0.60%
Manganese (Mn) 0.60% to 0.90%
Silicon (Si) 0.15% to 0.35%
Sulphur (S) 0.05% to Maximum
Phosphorous (P) 0.05% to Maximum
Arsenic (Ar) 0.15% to Maximum
Nominal Specification for R50 51.67 kg/m GOST
7173-75
Carbon (C) 0.40% to 0.58%
Manganese (Mn) 0.75% to 0.88%
Silicon (Si) 0.13% to 0.28%
Sulphur (S) 0.045% to Maximum
Phosphorous (P) 0.035% to Maximum
Arsenic (Ar) 0.13% to Maximum
Nominal Specification for R65 64.72 kg/m GOST
8165-75
Carbon (C) 0.40% to 0.58%
Manganese (Mn) 0.75% to 0.88%
Silicon (Si) 0.13% to 0.28%
Sulphur (S) 0.045% to Maximum
Phosphorous (P) 0.035% to Maximum