Hot rolled and annealed ferritic stainless steel sheet, method of producing same, and cold rolled and annealed ferritic stainless steel sheet
US10837075B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 3, 2015 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | Jan 2, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01N2530/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A hot rolled and annealed ferritic stainless steel sheet includes a composition that contains, on a mass percent basis, 0.015% or less of C, 1.00% or less of Si, 1.00% or less of Mn, 0.040% or less of P, 0.010% or less of S, 12.0% or more and 23.0% or less of Cr, 0.20% or more and 1.00% or less of Al, 0.020% or less of N, 1.00% or more and 2.00% or less of Cu, and 0.30% or more and 0.65% or less of Nb, Si and Al being contained so as to satisfy expression (1) described below, the balance being Fe and incidental impurities, and the hot rolled and annealed ferritic stainless steel sheet having a Vickers hardness less than 205, Si≥Al (1) (where in expression (1), Si represents the content of Si (% by mass), and Al represents the content of Al (% by mass)).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.