Alloy sheet for shadow mask

Details Alloy sheet for shadow mask Alloy sheet for shadow mask

1994-01-06

1996-10-08

Wyszomierski, George

Metal treatment

Stock

Magnetic

148336, 420 94, C22C 3808, C22C 3854

Patent

active

055627838

ABSTRACT:
An alloy sheet for making a shadow mask consists essentially of 34 to 38 wt. % Ni, 0.07 wt. % or less Si, 0.001 wt. % or less B, 0.003 wt. % or less O, 0.002 wt. % or less N, and the balance being Fe and inevitable impurities.
The alloy sheet has an average austenite grain size (Dav) of 10.5 to 15.0 .mu.m, a ratio of a maximum size to the minimum size of austenite grains (Dmax/Dmin) of 1 to 15, a Vickers hardness (Hv) of 165 to 220 and satisfying a relation of

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