Aluminum-killed medium-carbon steel sheet for containers and process for its preparation
US7169243B2 · kind B2 · utility
2Cited by
8References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 14, 2004 |
| Grant date | Jan 30, 2007 |
| Priority date | — |
| Expiry date | Jun 14, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D8/0473
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process is provided for preparation of an aluminum-killed medium-carbon steel sheet containing by weight from 0.040 to 0.080% of carbon, from 0.35 to 0.50% of manganese, from 0.040 to 0.070% of aluminum, from 0.004 to 0.006% of nitrogen, the remainder being iron and the inevitable trace impurities, wherein the steel contains carbon in free state, a grain count per mm2 greater than 20000 and, in the aged condition, has a percentage elongation A % satisfying the relationship:(640-Rm)/10≦A %≦(700-Rm)/l1where Rm is the maximum rupture strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.