Patent ID: 7014721
Filing Date: 2006-03-21
Classification: C22C,H01J

Abstract:
1. A Fe—Ni alloy material for a shadow mask having an excellent etching workability, wherein the alloy material comprises, in % by weight: Ni from 26 to 37 Si from 0.001 to 0.2 Mn from 0.01 to 0.6 Al from 0.0001 to 0.003 Mg not more than 0.001 Ca not more than 0.001, remainder Fe and inevitable impurities, the alloy material comprising at least two of the following inclusions (a) to (c) which are insoluble in an aqueous ferric chloride solution: (a) MnO—SiO (b) MgO—Al (c) SiO