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Chemical composition used rails: C:0, 54-0, 82 Si.:0, 18-0, 40 Mn:0, 60-1, 05 S:0.04 max P.:0, 035 max As.:0, 01 max of mass share Norms: r-50 gost-7173-75 and r-65 gost-8165-75.
