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Title:
HIGH STRENGTH THIN STEEL SHEET HAVING BURRING PROPERTY, AND PRODUCTION METHOD THEREFOR
Document Type and Number:
Japanese Patent JP2004250749
Kind Code:
A
Abstract:

To provide a high strength thin steel sheet having burring properties, and to provide a production method therefor.

The steel sheet consists of a steel comprising 0.01 to 0.1% C, 0.01 to 2% Si, 0.05 to 3% Mn, ≤0.1% P, ≤0.03% S, 0.005 to 0.02% Al, ≤0.005% N, 0.0005 to 0.003% Ca and 0.005 to 0.3% Ti, and comprising Ti in the range satisfying Ti-(48/12)C-(48/14)N-(48/32)S≥-0.03%, and the balance Fe with inevitable impurities, wherein the average diameter of the equivalent circle in Ti-containing nitrides is ≤7 μm.


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Inventors:
YOKOI TATSUO
AKAMATSU SATOSHI
HAYASHIDA TERUKI
DOBASHI KOICHI
Application Number:
JP2003042144A
Publication Date:
September 09, 2004
Filing Date:
February 20, 2003
Export Citation:
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Assignee:
NIPPON STEEL CORP
International Classes:
B21D19/00; C21D9/46; C22C38/00; C22C38/14; C22C38/58; (IPC1-7): C22C38/00; B21D19/00; C21D9/46; C22C38/14; C22C38/58
Domestic Patent References:
JP2002161340A2002-06-04
JP2000008136A2000-01-11
JPH10183295A1998-07-14
JP2000001736A2000-01-07
JPS58204117A1983-11-28
Attorney, Agent or Firm:
Hiroaki Tamura
Tomoyuki Yabuki



 
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