Are superior in deep drawing Characteristic the austenite type stainless steel hot rolling steel sheet and its production manner

摘要

PROBLEM TO BE SOLVED: To improve the deep drawability of an austenitic stainless hot rolled steel sheet by providing a steel sheet with a texture in which the accumulating degree in the crystal plane parallel to the sheet face is regulated to specified value. ;SOLUTION: This austenitic stainless hot rolled steel sheet is the one having a texture in which the accumulating degree in the [111] plane parallel to the steel sheet is regulated to ≥1.2. The steel sheet has a compsn. contg., by weight, 0.005 to 0.1% C, 0.05 to 1% Si, 0.05 to 2% Mn, ≤0.02% P, ≤0.03% S, ≤0.005% Al, 15 to 25% Cr, 5 to 15% Ni, 0.005 to 0.3% N, ≤0.01% O, and the balance substantial Fe. Furthermore, one or more kinds selected from 0.05 to 5% Cu, 0.05 to 5% Co, 0.05 to 5% Mo, 0.05 to 5% W, 0.01 to 0.5% Ti, 0.01 to 0.5% Nb, 0.01 to 0.5% V, 0.01 to 0.5% Zr, 0.0003 to 0.01% B and 0.0003 to 0.01% Ca are preferably incorporated therein. The steel stock is subjected to heating and rough rolling, and finish rolling is executed so as to regulate the temp. in the final pass to ≥1050°C.;COPYRIGHT: (C)1997,JPO