Aluminum-killed low carbon steel sheet for containers and method of making
US6398887B1 · kind B1 · utility
5Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 30, 2000 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Jun 30, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The object of the invention is an aluminum-killed low-carbon steel sheet comprising by weight between 0.022 and 0.035% of carbon, between 0.15 and 0.25% of manganese, between 0.040 and 0.070% of aluminum, between 0.004 and 0.006% of nitrogen, the remainder being iron and the inevitable trace impurities.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:(670−Rm)/14≦A%≦(720−Rm)/17where Rm is the maximum rupture strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.