Conclusions
Tests were performed of several variants for making steels from naturally alloyed pig iron. No decrease in the strength characteristics of the steels was seen with lower contents of manganese (to 1.0%) and carbon (0.07–0.12%).
The corrosion-resistant steels and the technology for making them were developed at the Orsk-Khalilovo combine. Planners have developed the specifications “Cold-Resistant Rolled Plates for Electric-Welded 530-1220-mm-diam. Pipes with an Increased Service Life” (TU 14-1-5386-99). These specifications were developed for steel 10GNB-PL of strength class K52 (X60), steel 09GNFB-PL of strength class K56 (X65), and steel 08G1FB-PL of strength class K60 (X70). Pipes of these steels can be used in any climatic zone and in areas where they come into contact with highly aggressive untreated water.
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I. P. Bardin Central Scientific Research Institute of Metallurgy (TsNIIchermet) and the Open Joint-Stock Company NOSTA (Orsk-Khalilovo Metallurgical Combine). Translated from Metallurg, No. 2, pp. 41–43, February, 2000.
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Frantov, I.I., Shapovalov, É.T., Morozov, Y.D. et al. Development of corrosion-resistant steels based on naturally alloyed pig iron. Metallurgist 44, 84–88 (2000). https://doi.org/10.1007/BF02463537
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DOI: https://doi.org/10.1007/BF02463537