Steel sheet, method of manufacturing same, crown cap, and drawing and redrawing (DRD) can

• Main Authors: Katagiri, Akihiro, Kojima, Katsumi, Yamamoto, Yoshihide, Ueno, Takashi, Kariya, Nobusuke
• Format: Patent
• Language: English
• Published: 17.11.2020
• Subjects: ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; ALLOYS; CHEMISTRY; CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; CONVEYING; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; HANDLING THIN OR FILAMENTARY MATERIAL; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PACKAGES; PACKAGING ELEMENTS; PACKING; PERFORMING OPERATIONS; STORING; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

Provided is a steel sheet having sufficient formability and strength even after sheet metal thinning, the steel sheet including: a chemical composition containing, by mass %, C: more than 0.0060% and not more than 0.012%, Si: 0.02% or less, Mn: 0.10% or more and 0.60% or less, P: 0.020% or less, S: 0.020% or less, Al: 0.01% or more and 0.07% or less, and N: 0.0080% or more and 0.0200% or less, with the balance being Fe and inevitable impurities, in which a dislocation density at a depth position of ½ of a sheet thickness from a surface of the steel sheet is 2.0×1014/m2 or more and 1.0×1015/m2 or less.