Method for producing austenitic iron-carbon-manganese metal sheets, and sheets produced thereby
US7799148B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2006 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Jul 23, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Iron-carbon-manganese austenitic steel sheet, the chemical composition of which comprises, the contents being expressed by weight: 0.45%≦C≦0.75%; 15%≦Mn≦26%; Si≦3%; Al≦0.050%; S≦0.030%; P≦0.080%; N≦0.1%; at least one metal element chosen from vanadium, titanium, niobium, chromium and molybdenum, where 0.050%≦V≦0.50%; 0.040%≦Ti≦0.50; 0.070%≦Nb≦0.50%; 0.070%≦Cr≦2%; 0.14%≦Mo≦2%; and, optionally, one or more elements chosen from 0.0005%≦B≦0.003%; Ni≦1%; Cu≦5%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting, the amounts of said at least one metal element in the form of precipitated carbides, nitrides or carbonitrides being: 0.030%≦Vp≦0.150%; 0.030%≦Tip≦0.130%; 0.040%≦Nbp≦0.220%; 0.070%≦Crp≦0.6%; 0.14%≦Mop≦0.44%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.