PURPOSE: To manufacture a shadow mask of an Fe-Ni alloy which inhibits streaking during etching by forging an Fe-Ni alloy ingot under specified conditions.

CONSTITUTION: When a shadow mask for a cathode-ray tube for a color TV set is manufactured, an Fe-Ni alloy ingot consisting of 25W41% Ni and the balance Fe is heated to 850°CWthe m.p. of the alloy (about 1,300°C) according to the Ni content, and it is forged in one or more steps at ≥40% reduction of area. The forged body is hot rolled to form a plate of 5mm thickness, and this plate is pickled, cold rolled to 1mm thickness, and annealed at 650°C for 1hr. It is further cold rolled to 0.145mm thickness, annealed at 650°C for 1hr, and subjected to final cold rolling to form a thin plate of 0.13mm thickness for a shadow mask. When the thin plate is used, a shadow mask causing no streaking during piercing by photoetching is obtd.