Steel sheet having a composition of ingredients containing substantially, by mass %, C: 0.005 to 0.200%, Si: 2.50% or less, Mn: 0.10 to 3.00%, N: 0.0100% or less, Nb: 0.005 to 0.100%, and Ti: 0.002 to 0.150% and satisfying the relationship of Tiâˆ’48/14Ã—Nâ‰§0.0005, having a sum of the X-ray random intensity ratios of the {100}<001> orientation and the {110}<001> orientation of a â…™ sheet thickness part of 5 or less, having a sum of the maximum value of the X-ray random intensity ratios of the {110}<111> to {110}<112> orientation group and the X-ray random intensity ratios of the {211}<111> orientation of 5 or more, and having a high rolling direction Young\'s modulus measured by the static tension method and a method of production of the same are provided.

Claims

15 · 1 independent · depth 3

15 granted claims

›1.independentHigh Young's modulus steel sheet containing, by mass %,nC: 0.005 to 0.200%,Si: 2.50% or less,Mn: 0.10 to 3.00%,P: 0.150% or less,S: 0.0150% or less,Al…+14

›2.↳ 1A high Young's modulus steel sheet as set forth in claim 1 characterized by further containing, by mass %, one or more ofnMo: 0.01 to 1.00%,Cr: 0.01 t…d2+1

›4.↳ 1A high Young's modulus steel sheet as set forth in claim 1 characterized by further containing, by mass %,nB: 0.0005 to 0.0100%.d2

›5.↳ 1A high Young's modulus steel sheet as set forth in claim 1 characterized by further containing, by mass %, one or more ofnCa: 0.0005 to 0.1000%,Rem: 0…d2

›6.↳ 1A high Young's modulus steel sheet as set forth in claim 1 characterized by having an X-ray random intensity ratio of the {332} orientation (A) of 15 …d2

›7.↳ 1A high Young's modulus steel sheet as set forth in claim 1 characterized by having an X-ray random intensity ratio of the {332} orientation (A) of 15 …d2

›8.↳ 1A high Young's modulus steel sheet as set forth in claim 1 characterized by having a rolling direction Young's modulus measured by the static tension …d2

›9.↳ 1A hot dip galvanized steel sheet characterized by comprising a high Young's modulus steel sheet as set forth in claim 1 which is hot dip galvanized.d2

›10.↳ 1A hot dip galvannealed steel sheet characterized by comprising a high Young's modulus steel sheet as set forth in claim 1 which is hot dip galvanneale…d2

›11.↳ 1A method of production of high Young's modulus steel sheet characterized by rolling a steel slab having the chemical ingredients as set forth in claim…d2+4

Classifications

14 codes

IPC · International Patent Classification

Section C — Chemistry; metallurgy

C21D38/02
C22C38/14
C22C38/12

USPC · US Patent Classification

148/320148/334148/533148/333148/504148/602148/500148/332148/335148/336428/659

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Deborah Yee

art unit 1733 · TC 1700

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Type	Document	Date
related publication	US 20100047617 A1	25 Feb 2010

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