High strength low carbon steel wire rods
US5141570A · kind A · utility
6Cited by
7References
2Claims
0Family size
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Key dates
| Filing date | Dec 19, 1990 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Dec 19, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/008
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
High strength low carbon steel wire rods excellent in the cold drawing property have a composite structure in which an acicular low temperature transformation phase comprising a martensite, bainite and/or the mixed structure thereof that comprises, by weight %, PA0 C: 0.02-0.30%, PA0 Si: less than 2.5%, PA0 Mn: less than 2.5% and the balance of iron and inevitable impurities and that may partially contain retained austenite is uniformly dispersed at the volume ratio of from 10 to 70% in the ferrite phase, and in which the weight of (C+N) in solution in the ferrite phase is less than 40 ppm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.