Patent ID: 11891681
Assignee: NIPPON STEEL STAINLESS STEEL CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  B  Y | IPC B  C

Claim 4:
5. A method for producing the ferritic stainless steel sheet according to claim 1 comprising,
heating a slab comprising, by mass %,, C: 0.001 to 0.030%,, Si: 0.01 to 1.00%,, Mn: 0.01 to 1.00%,, P: 0.010 to 0.050%,, S: 0.0002 to 0.0100%,, Cr: 10.0 to 20.0%,, N: 0.001 to 0.030%,, Nb: 0.10 to 0.40%,, B: 0 to 0.0030%,, Al: 0 to 0.100%,, Ti: 0 to 0.20%,, Ni: 0 to 1.00%,, Mo: 0 to 2.0%,, Cu: 0 to 3.0%,, V: 0 to 1.00%,, Mg: 0 to 0.0030%,, Sn: 0 to 0.30%,, Sb: 0 to 0.30%,, Zr: 0 to 0.10%,, Ta: 0 to 0.10%,, Hf: 0 to 0.10%,, W: 0 to 2.00%,, Co: 0 to 0.20%,, Ca: 0 to 0.0030%,, REM: 0 to 0.050%,, Ga: 0 to 0.10%,, a balance of Fe and unavoidable impurities,, an amount of solute Nb being less than or equal to a smaller value of 0.20 mass % and (Nb content-0.08) mass %, to 1230° C. or more,
hot rolling so that a ratio of a start temperature of finish rolling (° C.) and a finish temperature of finish rolling (° C.) (start temperature of finish rolling (° C.)/finish temperature of finish rolling (° C.)) becomes 1.10 or more, then
coiling at 500° C. or less.