Abstract
The characteristics of chromium-added Invar for use in shadow masks were studied, and the following advantages found for this metal. (1) The yield strength of the alloy decreases with increased added chromium, up to 5 wt%, on annealing, resulting in good formability. (2) The crystal orientation was textured to the {100} plane by hard cold rolling and annealing to allow easy etching. (3) The adherence of oxide to metal is better than that on Invar. (4) Magnetic properties caused no problem for use as a shadow mask.
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