Ni-based alloy improved in oxidation-resistance, high...

Details Ni-based alloy improved in oxidation-resistance, high... Ni-based alloy improved in oxidation-resistance, high...

2005-02-08

2005-02-08

Ip, Sikyin (Department: 1742)

Metal treatment

Stock

Nickel base

C148S428000, C420S443000

Reexamination Certificate

active

06852177

ABSTRACT:
A nickel-based alloy is provided for provide parts and members of improved oxidation-resistance and high temperature strength for use in an oxidation atmosphere at high temperatures, such as automobile parts including an electrode for an ignition plug, power plant facility parts including a gas turbine nozzle, inner parts of heat treat furnaces, and fuel cell parts. The alloy improved in oxidation-resistance, high temperature strength and hot workability consists essentially of, in mass percentage, C: 0.003 to 0.1%, Si: 1.0% or less, Mn: 2.0% or less, Cr: 12 to 32%, Fe: 20% or less, Mg: 0.001 to 0.04%, at least one element, of not more than 2.5% in total, selected from the group consisting of Nb, Ta and V, impurity elements of S: 0.01% or less, but the ratio of the Mg-content to the S-content (Mg/S) being 1 or more, and Ti: 0 inclusive to 0.02%, and the rest being Ni and incidental impurities.

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European Search Report for application No. EP 02 02 8132 Mar. 3, 2003.

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