Abstract
Carbon steel tape of 0.13 mm thickness was quenched on a watercooled iron plate under varying drawing speed, quenching temperature and tempering temperature. Razor blades were made of these samples, and the relationship between the sharpness and the bending test results was studied. The finishability of cutlery had much to do with the brittlenes of the material. Concerning the finishability, the material must not be too brittle or too tenacious as well; it must break in a certain range in bending tests. Bending tests revealed sharply the remarkable difference among the samples which showed almost equal values in hardness tests. The optimum condition was strictly determined by bending tests.
