Rail way insulator hardware Materials in C45, ductile iron Mechanical class 40kN - 90kN Rail ... galvanized coating protection against corrosion4.Materials testing acc.to EN10083-1,-2, AISI-SAE J403, ASTM A536, A3955.Dimension testing acc ... 60383, ISO 14713, 1461, ASTM A123, A153 Rail way insulator hardware