Hot-rolled stainless steel strip and method for producing the same

摘要

A hot-rolled stainless steel strip contains at least 10 wt % Cr and 1.0 wt % or less of Si, and has a controlled scale thickness of not more than 2.5 mu m in the surface layer. The average thickness of the Si-containing oxide layer formed in the scale/alloy substitute interface is 0.1 mu m or less. The hot-rolled stainless steel strip is produced by hot rolling at an elongation rate of at least 150 or hot rough rolling to form a sheet bar, descaling by spraying superhigh pressure water to the surface of the sheet bar at an impact pressure (p) of 25 kgf/cm2 or more and a flow rate density of 0.002 l/cm2 or more, and then finish rolling so that the maximum reduction ratio per pass satisfies certain disclosed criteria.