Ferritic stainless steel plate excellent in deep drawability and anti-ridging property and production method thereof
US6113710A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1999 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Mar 29, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D8/0426
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present invention provides a ferritic stainless steel plate improved in the deep drawability and the anti-ridging property at deep drawing work and the production technique thereof. The practical construction of the present invention is a ferritic stainless steel plate containing from 0.001 to 0.015 wt. % C, not more than 1.0 wt. % Si, not more than 1.0 wt. % Mn, not more than 0.05 wt. % P, not more than 0.010 wt. % S, from 8 to 30 wt. % Cr, not more than 0.08 wt. % Al, from 0.005 to 0.015 wt. % N, not more than 0.0080 wt. % O, not more than 0.25 wt. % Ti with Ti/N.gtoreq.12, and from 0.05 to 0.10 wt. % (Nb+V) with V/Nb being from 2 to 5, and, if necessary, further containing one or more kinds selected from not more than 2.0 wt. % Mo, not more than 1.0 wt. % Ni, and not more than 1.0 wt. % Cu together with one or more kinds selected from from 0.0005 to 0.0030 wt. % B, from 0.0007 to 0.0030 wt. % Ca and from 0.0005 to 0.0030 wt. % Mg. Furthermore, in the production method of the present invention, the above-described ferritic stainless steel plate is produced by heating the steel slab made up of the above-described components to a temperature range of 1170.degree. C. or lower, f…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.