Fe-Ni alloy for tension mask and tension mask using it and color crt

摘要

The creep property of a shadow mask, which has cathode-ray passing apertures, in the form of dots or slots formed by etching, and to which tension is then applied without undergoing press-forming, is enhanced. The Fe-Ni alloy containing from 30-50% of Ni, the balance consisting of iron and unavoidable impurities, has cold working temper of not less than 30% and not more than 57% of the final working degree.