| 摘要 |
<p>A stainless steel plate for a shadow mask having the following elemental composition in weight: chromium (Cr): 9 to 20 wt %, carbon (C): 0.15 wt % or less, manganese (Mn): 0 to 1.0 wt %, titanium (Ti): 0 to 0.2 wt %, silica (Si) 0 to 1.0 wt %, aluminum (Al): 0 to 1.0 wt %, balance: iron (Fe) and inevitable impurities, wherein the contents of phosphorus (P) and sulfur (S) in said inevitable impurities satisfy P: 0.05 wt % or less and S: 0.03 wt % or less, respectively; and a stainless steel plate for a shadow mask which is obtained by subjecting a stainless steel plate having the above-defined elemental composition to a cold rolling or shape straightening and subjecting the resulting steel plate to an annealing wherein the maximum temperature of the plate is 550 to 650°C. The stainless steel plate has a coefficient of thermal expansion less than that of low carbon steel, is inexpensive compared to the invar alloy, exhibits a reduced plastic deformation at a high temperature and has a high strength which is satisfactory for a shadow mask to be used under a high tension. The stainless steel plate exhibits also excellent etching characteristics.</p> |
