FERRITIC STAINLESS STEEL FOR USE IN PRODUCING UREA WATER TANK

Title:

FERRITIC STAINLESS STEEL FOR USE IN PRODUCING UREA WATER TANK

Document Type and Number:

WIPO Patent Application WO/2010/010916

Kind Code:

A1

Abstract:

A ferritic stainless steel for use in producing a urea water tank, which contains C: 0.05% or less, N: 0.05% or less, Si: 0.02 to 1.5%, Mn: 0.02 to 2%, and Cr: 15 to 23%, and further contains Nb and/or Ti in an amount of 8(C+N) to 1% with the balance being iron and unavoidable impurities, and which has an effective Cr content of 15% or above as defined by formula (I), (II) or (III). When only Nb is contained, the effective Cr content = Cr + 4Si – 2Mn··· (I); when only Ti is contained, the effective Cr content = Cr + 4Si – 2Mn – 10Ti··· (II); and when Nb and Ti are contained, the effective Cr content = Cr + 4Si – 2Mn – (10Ti – 3Nb)··· (III)

Inventors:

HIRAIDE NOBUHIKO (JP)
KAJIMURA HARUHIKO (JP)
TAKAHASHI AKIHIKO (JP)
MAEDA SHIGERU (JP)

Application Number:

PCT/JP2009/063169

Publication Date:

January 28, 2010

Filing Date:

July 23, 2009

Export Citation:

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Assignee:

NIPPON STEEL & SUMIKIN SST (JP)
HIRAIDE NOBUHIKO (JP)
KAJIMURA HARUHIKO (JP)
TAKAHASHI AKIHIKO (JP)
MAEDA SHIGERU (JP)

International Classes:

C22C38/00; C22C38/38; C22C38/58

Domestic Patent References:

WO2009084526A1

2009-07-09

Foreign References:

JP2007146202A	2007-06-14
JPH08511829A	1996-12-10
JP2008190065A	2008-08-21
JP2007113484A	2007-05-10
JP2003301241A	2003-10-24
JP2008062598A	2008-03-21
JP2007339732A	2007-12-28

Other References: