HOT ROLLED AND STEEL SHEET AND A METHOD OF MANUFACTURING THEREOF

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United States of America

APP PUB NO 20240368723A1
SERIAL NO

18687274

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Abstract

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A hot rolled steel sheet having a composition including of the elements, 0.02%≤Carbon≤0.2%, 3%≤Manganese≤9%, 0.2%≤Silicon≤1.2%, 0.9%≤Aluminum≤2.5%, 0%≤Phosphorus≤0.03%, 0%≤Sulfur≤0.03%, 0%≤Nitrogen≤0.025%, 0%≤Molybdenum≤0.6%, 0%≤Titanium≤0.1%, 0.0001%≤Boron≤0.01%, 0%≤Chromium≤0.5%, 0%≤Niobium≤0.1%, 0%≤Vanadium≤0.15%, 0%≤Nickel≤1%, 0%≤Copper≤1%, 0%≤Calcium≤0.005%, 0%≤Magnesium≤0.0010%, the remainder composition being composed of iron and unavoidable impurities caused by processing, the microstructure of the steel sheet including in area fraction, at least 60% of tempered martensite, 15% to 40% residual austenite, 0% to 10% polygonal ferrite, 0% to 5% of bainite, 0 to 15% of fresh martensite and 0% to 5% of carbides of Niobium, Titanium, Vanadium or Iron.

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Patent Owner(s)

Patent OwnerAddress
ARCELORMITTALLUXEMBURG LUXEMBURG CITY LUXEMBOURG LUXEMBOURG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
BRACKE, Lieven Sinaai-Waas, BE 4 7
DE, KNIJF Dorien Denderhoutem Oost-Vlaanderen, BE 5 0
DUPREZ, Lode Gentbrugge, BE 12 2
LORENZ, Ulrike Zwijndrecht, BE 3 2
WATERSCHOOT, Tom Lokeren, BE 8 22

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