HIGH STRENGTH COLD ROLLED STEEL SHEET EXCELLENT IN FORMABILITY HOT DIP ZINC COATED HIGH STRENGTH COLD ROLLED STEEL SHEET AND METHOD MANUFACTURING AND SAME

A method of manufacturing high-strength, cold-rolled steel sheet excellent in formability. When increasing the strength of extra low-carbon steel as a base material including Nb or a combination of Ti and Nb by adding solid-solution strengthening element thereto, quantities of P and Si to be added w...

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Bibliographic Details
Main Authors YOSHINAGA, NAOKI, AKISUE, OSAMU, USHIODA, KOHSAKU
Format Patent
LanguageEnglish
Korean
Published 16.10.1996
Edition6
Subjects
ALLOYS
CHEMISTRY
FERROUS OR NON-FERROUS ALLOYS
METALLURGY
TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Summary:A method of manufacturing high-strength, cold-rolled steel sheet excellent in formability. When increasing the strength of extra low-carbon steel as a base material including Nb or a combination of Ti and Nb by adding solid-solution strengthening element thereto, quantities of P and Si to be added which have been used in quantities are decreased whereas Mn and Cr are liberally added. Thus, the yield strength is prevented from increasing and the strength can be increased, whereby a high strength cold rolled steel sheet excellent in surface formability and in resistance to denting can be manufactured.
Bibliography:Application Number: KR19930702754