Title:
METAL GASKET AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2017/104755
Kind Code:
A1
Abstract:
Provided are: a metal gasket that is easily worked into a metal gasket and endowed with high high-temperature strength when used at high temperature; and a method for producing the same. The metal gasket comprises, expressed in mass%, C: 0.10% or less, Si: 1.0% or less, Mn: 2.0% or less, P: 0.04% or less (including 0%), S: 0.01% or less (including 0%), Ni: 25.0-60.0%, Cr: 10.0-20.0%, either Mo or W alone, or both Mo + W/2: 0.05-5.0%, Al: more than 0.8% to 3.0% or less, Ti: 1.5-4.0%, Nb: 0.05-2.5%, V: 1.0% or less (including 0%), B: 0.001-0.015%, Mg: 0.0005-0.01%, S/Mg: 1.0 or less, N: 0.01% or less (including 0%), and O: 0.005% or less (including 0%), with the remainder being Fe and unavoidable impurities. The metal gasket has a metal structure in which a precipitate γ' phase having an average equivalent circle diameter of 25 nm or larger is not present within the austenite base.
Inventors:
UEHARA TOSHIHIRO (JP)
NISHIDA JUNICHI (JP)
NISHIDA JUNICHI (JP)
Application Number:
PCT/JP2016/087410
Publication Date:
June 22, 2017
Filing Date:
December 15, 2016
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
B21D53/84; C22C38/00; C21D9/46; C22C19/05; C22C30/00; C22C38/58; C22F1/10; F16J15/08; C22C38/60; C22F1/00
Foreign References:
| JPH0711376A | 1995-01-13 | |||
| JP2004277860A | 2004-10-07 | |||
| JPH11229059A | 1999-08-24 | |||
| JP2011127204A | 2011-06-30 |
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