HIGH-CARBON HOT-ROLLING STEEL SHEET AND A PRODUCTION METHOD THEREFOR

WIPO Patent Application WO/2010/018920

A2

The present invention provides a high-carbon hot-rolling steel sheet having a fine pearlite structure which i) on a percent by weight basis comprises carbon in an amount of 0.60-1.20%, silicon in an amount of 0.10-0.35%, manganese in an amount of 0.10-0.80%, phosphorous in an amount of more than 0 and less than 0.03% and sulphur in an amount of more than 0 and less than 0.03%, and also comprises at least one of nickel in an amount of less than 0.25% (including 0), chromium in an amount of less than 0.30% (including 0) and/or copper in an amount of less than 0.25% (including 0), and a balance of iron and other inevitably added impurities, and in which ii) the cementite width is greater than 0 and less than 0.2mm, and the cementite-cementite spacing is greater than 0 and less than 0.5mm.

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JANG SE-WHAN (KR)
WOO JAE-DONG (KR)
SEO MIN-KYO (KR)

PCT/KR2009/002909

February 18, 2010

June 01, 2009

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POSCO (KR)
JANG SE-WHAN (KR)
LEE CHANG HOON (KR)
WOO JAE-DONG (KR)
SEO MIN-KYO (KR)

C22C38/00

JPH11131137A	1999-05-18
KR100401272B1	2003-10-17
KR20080012942A	2008-02-12
KR0143499B1	1998-08-17
KR20080060619A	2008-07-02

YOU ME PATENT AND LAW FIRM (649-10 Yoksam-dong Kangnam-ku, Seoul 135-080, KR)

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