STEEL SHEET EXCELLENT IN ACID DEW POINT CORROSION RESISTANCE AND EXHAUST GAS FLOW PASSAGE CONSTITUTING MEMBER

Title:

STEEL SHEET EXCELLENT IN ACID DEW POINT CORROSION RESISTANCE AND EXHAUST GAS FLOW PASSAGE CONSTITUTING MEMBER

Document Type and Number:

Japanese Patent JP2017160544

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To dramatically improve sulfur acid dew point corrosion resistance and hydrochloric acid dew point corrosion resistance at the same time, in a steel having normal steel as a base.SOLUTION: There is provided a steel excellent in acid dew point corrosion resistance having a chemical composition containing, by mass%, C:0.001 to 0.15%, Si:0.80% or less, Mn:1.50% or less, P:0.025% or less, S:0.030% or less, Cu:0.10 to 1.00%, Ni:0.50% or less, Cr:0.05 to 0.25%, Mo:0.01 to 0.08%, Al:0.100% or less, Ti, Nb and V:total 0 to 0.20%, B:0 to 0.010%, Sb, Sn:total 0 to 0.10% and the balance Fe with inevitable impurities, a structure containing a ferrite single phase structure or one or more of cementite, pearlite and martensite in a range of total 30 vol.% or less and the balance ferrite phase and average crystal particle diameter of ferrite crystal particles of 12.0 μm or less.SELECTED DRAWING: Figure 1

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Inventors:

KATAGIRI YUKIO
KAWAMOTO AKITO
FUJIWARA SUSUMU

Application Number:

JP2017093814A

Publication Date:

September 14, 2017

Filing Date:

May 10, 2017

Export Citation:

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Assignee:

NISSHIN STEEL CO LTD

International Classes:

C22C38/00; C22C38/60

Domestic Patent References:

JP2012180546A	2012-09-20
JP2012057221A	2012-03-22
JP2004315936A	2004-11-11
JP2003213367A	2003-07-30

Foreign References:

CN102392185A	2012-03-28
CN1908217A	2007-02-07
CN103147000A	2013-06-12
CN103741056A	2014-04-23
US5622572A	1997-04-22
US20070235112A1	2007-10-11
CN101831598A	2010-09-15
CN102286700A	2011-12-21

Other References:

澤田真也、野口岳雄: "耐硫酸・塩酸露点腐食鋼S-TEN1鋼管の品質特性", 火力原子力発電, vol. 65, no. 2, JPN6016046109, 15 February 2014 (2014-02-15), JP, pages 129 - 133, ISSN: 0003590309
宇佐見明、外５名: "耐塩酸性を向上させた耐硫酸性鋼：新S-TEN1", 新日鐵技報, JPN6016046111, 15 June 2004 (2004-06-15), JP, pages 21 - 27, ISSN: 0003590310

Attorney, Agent or Firm:

Komatsu Taka

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