Title:
FERRITIC HEAT-RESISTANT STEEL WELD METAL AND WELD JOINT INCLUDING THE SAME
Document Type and Number:
Japanese Patent JP2020104141
Kind Code:
A
Abstract:
To provide a ferritic heat-resistant steel weld metal having excellent freezing cracking resistance in addition to high creep strength and toughness and a weld joint including the same.SOLUTION: A ferritic heat-resistant steel weld metal has a chemical composition containing, in mass%, C: 0.06-0.10%, Si: 0.10-0.40%, Mn: 0.30-0.70%, P: 0.010% or less, S: 0.003% or less, Cr: 8.5-9.5%, Mo: 0.01-1.0%, Co: 2.6-3.4%, Ni: 0.01-1.10%, W: 2.5-3.5%, Nb: 0.02-0.08%, Ta: 0.02-0.08%, V: 0.1-0.3%, B: 0.007-0.015%, Al: 0.030% or less, N: 0.005-0.017%, O: 0.020% or less, Cu: 0-1.0%, Ti: 0-0.30%, Ca: 0-0.050%, Mg: 0-0.050%, REM: 0-0.10%, with the balance being Fe and impurities, and satisfies [sol.B≥0.005], [insol.B≤0.0045] and [(20(C+N)+Cr+4Mo+2W+10(Nb+Ta+V)+500 sol.B)/(Mn+Co+Ni) ≥4.5].SELECTED DRAWING: None
Inventors:
KURIHARA SHINNOSUKE
KOUSU TAKAHIRO
JOTOKU KANA
HIRATA HIROMASA
OKADA KOICHI
HAMAGUCHI TOMOAKI
KOUSU TAKAHIRO
JOTOKU KANA
HIRATA HIROMASA
OKADA KOICHI
HAMAGUCHI TOMOAKI
Application Number:
JP2018244657A
Publication Date:
July 09, 2020
Filing Date:
December 27, 2018
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
B23K35/30; B23K9/23; C22C38/00; C22C38/54
Domestic Patent References:
| JPH09122971A | 1997-05-13 | |||
| JPH09267190A | 1997-10-14 | |||
| JP2009293063A | 2009-12-17 | |||
| JP2016216815A | 2016-12-22 |
Foreign References:
| WO2017104815A1 | 2017-06-22 |
Attorney, Agent or Firm:
Patents corporation Blitas