Title:
HEAT-RESISTANT ALLOY FOR HEARTH METAL MEMBER
Document Type and Number:
WIPO Patent Application WO/2018/079073
Kind Code:
A1
Abstract:
The present invention provides a Co-free heat-resistant alloy for hearth metal members that exhibits properties equal to or superior to those of Co-containing heat-resistant steel. The heat-resistant alloy for hearth metal members according to the present invention is a heat-resistant alloy used for the hearth metal members of steel heating furnaces and contains, in mass%, C: 0.05%-0.5% and Si: more than 0% and not more than 0.95% where 0.05% ≤ C + Si ≤ 1.0%, Mn: more than 0% and not more than 1.0%, Ni: 40%-50%, Cr: 25%-35%, W: 1.0%-3.0%, and the remainder comprising at least 10% Fe and unavoidable impurities. The heat-resistant alloy for hearth metal members may also contain, in mass%, Ti: 0.05%-0.5% and/or Zr: 0.02%-1.0%.
Inventors:
ENJO YOHEI (JP)
MATSUBARA MOTOYUKI (JP)
HAYASE YUKI (JP)
MATSUBARA MOTOYUKI (JP)
HAYASE YUKI (JP)
Application Number:
PCT/JP2017/031693
Publication Date:
May 03, 2018
Filing Date:
September 04, 2017
Export Citation:
Assignee:
KUBOTA KK (JP)
International Classes:
C22C30/00; C22C19/05
Foreign References:
| JPS5681661A | 1981-07-03 | |||
| JPH10121172A | 1998-05-12 | |||
| JPH08269611A | 1996-10-15 | |||
| JPS5395822A | 1978-08-22 |
Other References:
See also references of EP 3533889A4
Attorney, Agent or Firm:
MARUYAMA & CO. (JP)
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