Title:
AUSTENITIC STAINLESS STEEL WELDED JOINT
Document Type and Number:
WIPO Patent Application WO/2019/168119
Kind Code:
A1
Abstract:
Provided is an austenitic stainless steel welded joint having excellent polythionic acid SCC resistance and naphthenic acid corrosion resistance as well as excellent creep ductility. An austenitic stainless steel welded joint (1) is provided with a base material (10) and a welding metal (20). The chemical composition of the welding metal (20) in a width center position and a thickness center position is, in terms of % by mass, 0.050% or less of C, 0.01-1.00% Si, 0.01-3.00% Mn, 0.030% or less of P, 0.015% or less of S, 15.0-25.0% Cr, 20.0-70.0% Ni, 1.30-10.00% Mo, 0.05-3.00% Nb, 0.150% or less of N, and 0.0050% or less of B, the remainder comprising Fe and impurities.
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Inventors:
JOTOKU KANA (JP)
YAMADA KENTA (JP)
OKADA HIROKAZU (JP)
OSUKI TAKAHIRO (JP)
YAMADA KENTA (JP)
OKADA HIROKAZU (JP)
OSUKI TAKAHIRO (JP)
Application Number:
PCT/JP2019/007930
Publication Date:
September 06, 2019
Filing Date:
February 28, 2019
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C22C38/00; C22C19/05; C22C38/58; B23K35/30
Domestic Patent References:
| WO2017171050A1 | 2017-10-05 | |||
| WO2017175839A1 | 2017-10-12 | |||
| WO2018043565A1 | 2018-03-08 | |||
| WO2009044802A1 | 2009-04-09 |
Foreign References:
| JP2014005506A | 2014-01-16 | |||
| JP2012001749A | 2012-01-05 | |||
| JP2001107196A | 2001-04-17 | |||
| JP2003166039A | 2003-06-13 |
Other References:
See also references of EP 3760753A4
Attorney, Agent or Firm:
ASCEND IP LAW FIRM (JP)
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