Zinc-plated high-tension steel sheet excellent in press formability
US8241759B2 · kind B2 · utility
10Cited by
2References
14Claims
0Family size
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Key dates
| Filing date | Mar 18, 2008 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | May 16, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/265
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A high-strength galvanized steel sheet having excellent formability contains as a chemical component of steel on a mass percent basis: 0.05% to 0.3% of C; more than 0.60% to 2.0% of Si; 0.50% to 3.50% of Mn; 0.003% to 0.100% of P; 0.010% or less of S; 0.010% to 0.06% of Al; 0.007% or less of N; and the balance including Fe and inevitable impurities, and in the microstructure of the steel sheet, the standard deviation of nano-hardness is 1.50 GPa or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.