Patent ID: 6624556
Filing Date: 2003-09-23
Classification: C21D,C22C,H01J

Abstract:
An Fe-Ni alloy used for a shadow mask, consisting of, by weight percentage, from 34 to 38% of Ni, up to 0.5% of Mn, from 0 to 0.02% of soluble Al, from 0.0005 to 0.0100% of N, the balance being Fe and unavoidable impurities, in which a smaller of a first value, which is the content of said soluble Al content divided by 27, or a second value, which is the nitrogen content divided by 14, is not more than 0.0000888, and in which when the first value and the second value are the same, the content of the soluble Al is from 0 to 0.01%, and said Fe-Ni alloy exhibiting a 0.2% yield strength (N/mm2) of 260 N/mm2 or less at room temperature after annealing at 900Â° C.