Abrasion resistant steel plate or steel sheet excellent in resistance to stress corrosion cracking and method for manufacturing the same

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United States of America Patent

PATENT NO 9879334
SERIAL NO

14008104

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Abstract

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Provided is an abrasion resistant steel plate or steel sheet, suitable for use in construction machines, industrial machines, and the like, and a method for manufacturing the same. A steel plate or steel sheet has a composition containing 0.20% to 0.27% C, 0.05% to 1.0% Si, 0.30% to 0.90% Mn, P, S, 0.005% to 0.025% Nb, 0.008% to 0.020% Ti, 0.1% or less Al, and 0.0010% to 0.0060% N on a mass % basis, the composition further containing one or more of Cr, Mo, W, and B, the composition containing one or more of Cu, Ni, V, an REM, Ca, and Mg as required, the remainder being Fe and inevitable impurities. After being heated, a semi-finished product having the steel composition is hot-rolled and is subjected to reheat-quenching or direct quenching.

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Patent Owner(s)

Patent OwnerAddress
JFE STEEL CORPORATION2-3 UCHISAIWAI-CHO 2-CHOME CHIYODA-KU TOKYO 1000011

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ishikawa, Nobuyuki Fukuyama, JP 90 578
Murota, Yasuhiro Kawasaki, JP 3 16
Ueda, Keiji Chiba, JP 37 267

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