| 摘要 |
A magnetic shield material which provides good internal magnetic shielding and high handling strength for use in a color image tube, its production method and a color image tube having the material assembled therein. The magnetic shield material is produced by cold rolling a hot-rolled low-carbon steel strip consisting of less than 0.006 wt.percent C, less than 0.002 wt.percent N, less than 0.5 wt.percent Mn, 0.5 to 2.5 wt.percent Si and the balance of Fe and unavoidable impurities, annealing the steel and applying nickel plating.
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