HIGH-STRENGTH HOT ROLLED STEEL SHEET WITH EXCELLENT WORKABILITY, FATIGUE CHARACTERISTIC, AND SURFACE CHARACTERISTIC

Japanese Patent JP2005206864

A

To provide a high-strength hot rolled steel sheet excellent in workability and fatigue characteristics and having superior surface characteristics at a relatively low cost.

The high-strength hot rolled steel sheet with excellent workability, fatigue characteristics, and surface characteristics has a composition containing, by mass, 0.03 to 0.15% C, 0.5 to 2% Mn, 0.01 to 0.1% Al and ≤0.02% (including 0%) S, also containing >0.030 to 0.08% P, 0.3 to 1.00% Cr and ≤0.1% (including 0%) Si and having the balance Fe with inevitable impurities and also has a metallic structure containing polygonal ferrite as a primary phase and martensite as a secondary phase.

WO/2008/064798	METHOD AND DEVICE FOR PRODUCING STAINLESS STEEL WITHOUT USING A SUPPLY OF ELECTRICAL ENERGY, BASED ON PIG-IRON THAT HAS BEEN PRE-TREATED IN A DDD INSTALLATION
WO/1985/004193	PRODUCTION OF ALLOY STEELS USING CHEMICALLY PREPARED V2O3 AS A VANADIUM ADDITIVE
JPS5842713	TREATMENT OF DESULFURIZED SLAG

CHIYODA TETSUO
MIURA MASAAKI
SHIOGAMA TORU

JP2004013227A

August 04, 2005

January 21, 2004

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KOBE STEEL LTD

C21C5/00; C21D7/13; C22C38/00; C22C38/04; C22C38/06; C21D9/46; C22C38/18; C22C38/38; C22C38/58; (IPC1-7): C22C38/00; C21D9/46; C22C38/38; C22C38/58

JPH1161327A	1999-03-05
JPS63282240A	1988-11-18
JP2002013227A	2002-01-18
JPH06264185A	1994-09-20

Kyuichi Ueki
Etsushi Kotani

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