| 摘要 |
PURPOSE:To develop a shadow mask material for color cathode-ray tubes improved in press formability, lack of toughness, and suitability to piercing by etching by properly regulating the trace constituents of an Fe-Ni-Cr alloy having a specific composition. CONSTITUTION:As the shadow mask material for use in color cathode-ray tubes, the Fe-Ni-Cr alloy consisting of, by weight, <0.10% C, <0.30% Si, <0.30% Al, 0.10-1.0% Mn, <0.020% S, <0.0100% O, <0.0050% N, 30-45% Ni, 2.0-10.0% Cr, and the balance Fe, or further containing 0.01-1.0%, in total, of 1 or >=2 kinds among Ti, Zr, Mo, Nb, B, V, and Be, and having a grain size of grain size No. 5.0 or above is used. The shadow mask material improved in the lack of toughness as well as in press formability and having excellent suitability to piercing by etching can be manufactured.
|
