HIGH-Cr HIGH-Ni AUSTENITIC HEAT-RESISTANT CAST STEEL AND EXHAUST SYSTEM COMPONENT PRODUCED FROM SAME

Title:

HIGH-Cr HIGH-Ni AUSTENITIC HEAT-RESISTANT CAST STEEL AND EXHAUST SYSTEM COMPONENT PRODUCED FROM SAME

Document Type and Number:

WIPO Patent Application WO/2005/103314

Kind Code:

A1

Abstract:

Disclosed is a high-Cr high-Ni austenitic heat-resistant cast steel having a composition mainly containing C, Si, Mn, Cr, Ni, W and/or Mo, and Nb, and further containing, in weight%, 0.01-0.5% of N, not more than 0.23% of Al, not more than 0.07% of O and the balance of Fe and unavoidable impurities. Since this high-Cr high-Ni austenitic heat-resistant cast steel is excellent in high-temperature resistance, oxidation resistance and thermal fatigue life, it is preferably used for exhaust system components.

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PRODUCTION OF HOT ROLLED COMPOSITE STRUCTURE STEEL SHEET HAVING HIGH STRENGTH AND HIGH WORKABILITY

Inventors:

HAYASHI KEIJIRO (JP)
ITOH KENJI (JP)
ODAIRA AKINAGA (JP)
OTSUKA KOKI (JP)

Application Number:

PCT/JP2005/007483

Publication Date:

November 03, 2005

Filing Date:

April 19, 2005

Export Citation:

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Assignee:

HITACHI METALS LTD (JP)
HAYASHI KEIJIRO (JP)
ITOH KENJI (JP)
ODAIRA AKINAGA (JP)
OTSUKA KOKI (JP)

International Classes:

C22C38/00; C22C38/60; F01N3/28; F01N13/16; F01N13/18; F02B39/00; (IPC1-7): C22C38/00; C22C38/60; F01N3/28; F01N7/16; F02B39/00

Foreign References:

JP2002309935A	2002-10-23
JP2000291430A	2000-10-17
JPH07278759A	1995-10-24
JPH0790502A	1995-04-04
JPS518807B2	1976-03-22
JP2760004B2	1998-05-28
JP2002167655A	2002-06-11
JP2000291430A	2000-10-17

Other References: