55-06 and 70-02 Ductile Dura-Bar are continuously cast ductile irons with about 50 and 75% pearlitic microstructures, respectively. 55-06 has about the same tensile strength as SAE 1045 as-hot-rolled steel. Its maximum yield strength and elongation are equivalent to a eutectoid carbon steel. 70-02 Ductile Dura-Bar has somewhat greater tensile strength up to 3 diameter and considerably higher yield strength up through 10 diameter. The elongation of 70-02 is lower than that of 55-06 because of its reduced ferrite content. This datasheet provides information on composition, microstructure, and hardness. It also includes information on heat treating. Filing Code: CI-62. Producer or source: Federal Bronze Products Inc..

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