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Rolling and other OMD processes
ArticleName Thermomechanical rolling of heavy plates with 100 mm thickness, from highstrength bridge steels S460K2W and S460J5W with improved atmospheric corrosion resistance
DOI 10.17580/chm.2022.06.04
ArticleAuthor E. A. Goli-Oglu, A. N. Filatov

NLMK DanSteel A/S, Frederiksvärk, Denmark:
E. A. Goli-Oglu, Cand. Eng., Chief Technologist, e-mail:
A. N. Filatov, Metal Science Engineer


The article describes the results of industrial production on NLMK DanSteel reversing rolling mill 4200 of heavy plates with thickness of up to 100 mm made of low-carbon micro-alloyed high-strength steels of categories S460K2W and S460J5W. This are copper-alloyed and chromealloyed steel grades, which provides increased atmospheric corrosion resistance. Steels of categories S460K2W and S460J5W are manufactured in accordance with new edition of standard EN 10025-5:2019 and are used primarily in the construction sector for bridge and overpass constructions. The required level of mechanical and operational properties is ensured by optimal combination of the designed chemical composition and technological modes of thermomechanical processing with final accelerated cooling. According to the findings presented in the article, NLMK DanSteel has received TUV NORD approval for the manufacturing of these steels in the thickness range up to 100 mm as per supplement dated 18.05.2021 to certificate 0045-CPR-0554 dated 12.06.2020 in accordance with regulations 305/2011/EU: System 2+.

keywords Steel, heavy plate, weathering, atmospheric corrosion resistance, micro-alloying, rolling mill, thermomechanical processing, accelerated cooling, microstructure, mechanical properties, impact energy, weldability

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