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Development of medium-to-high carbon hot-rolled steel strip on a thin slab casting direct strip production complex

ABSTRACT Medium-to-high carbon hot-rolled steel strip was developed on a thin slab casting direct strip production complex at Essar Steel Algoma Inc. to meet different specifications and special customer requirements. The effects of chemistry, casting and hot rolling process parameters on microstructure and mechanical properties were studied. Soft core reduction, secondary cooling, casting speed, as well as hot rolling and coiling temperature were optimised to achieve the required mechanical properties and other requirements such as ultrasonic test after electric resistance welding, wear resistance and corrosion resistance. These new developed medium-to-high carbon steel grades have extensive applications in oil and gas industries, general manufacturing, construction, automotive and mining equipment.