A metallic gasket and a manufacturing method for the same

Japanese Patent JP6270194

B2

Provided is a metal gasket including, 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.

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Toshihiro Uehara
Junichi Nishida

JP2017528240A

January 31, 2018

December 15, 2016

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Hitachi Metals Co., Ltd.

C22C38/00; B21D53/84; C21D9/46; C22C19/05; C22C30/00; C22C38/58; C22F1/10; F16J15/08

JP7011376A
JP2004277860A
JP11229059A
JP2011127204A

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