Method for producing high elastic limit nonmagnetic steel material using an austenitic stainless steel sheet
US10125404B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2014 |
| Grant date | Nov 13, 2018 |
| Priority date | — |
| Expiry date | Sep 20, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/001
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
[Problem] To provide a raw material steel sheet for providing a high strength nonmagnetic austenitic stainless steel material that has a high elastic limit stress and excellent toughness.[Solution to Problem] An austenitic stainless steel sheet containing 0.12% or less of C, from 0.30 to 3.00% of Si, from 2.0 to 9.0% of Mn, from 7.0 to 15.0% of Ni, from 11.0 to 20.0% of Cr, and 0.30% or less of N, and further containing at least one kind of 3.0% or less of Mo, 1.0% or less of V, 1.0% or less of Nb, 1.0% or less of Ti, and 0.010% or less of B, all in terms of percentage by mass, with the balance of Fe and unavoidable impurities, having a component composition having a Ni equivalent of 19.0 or more, having a value of d−1/2 of 0.40 or more, wherein d (μm) represents an average austenitic crystal grain diameter, and having a property that provides a magnetic permeability μ of 1.0100 or less after subjected to cold rolling with an equivalent strain of 0.50 or more.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.