Steel composition, articles prepared there from, and uses thereof
US7628869B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2005 |
| Grant date | Dec 8, 2009 |
| Priority date | — |
| Expiry date | Jul 8, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An article as disclosed herein comprises a steel comprising carbon in an amount greater than 0.18 weight percent and less than or equal to 0.23 weight percent by ladle analysis, wherein a test article consisting of the steel has a low temperature Charpy V-notch toughness of greater than or equal to 54 Joules when measured at −40° C. according to ASTM E23-01, and wherein a test article consisting of the steel further meets the other test requirements for S355NL steel according to European Norm EN 10 113-2:1993. In an embodiment, the article is a flange for a wind tower, and is suitable for use under extremely cold operating conditions (to −30° C.). A method for forming the flange is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.