Coated steel product
US10982303B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2018 |
| Grant date | Apr 20, 2021 |
| Priority date | — |
| Expiry date | Jan 26, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/04
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
There is provided a coated steel product having a steel product and a coating layer including a Zn—Al—Mg alloy layer disposed on a surface of the steel product, in which the Zn—Al—Mg alloy layer has a Zn phase, the Zn phase contains a Mg—Sn intermetallic compound phase, and the coating layer consists of Zn: more than 65.0%, Al: from more than 5.0% to less than 25.0%, Mg: from more than 3.0% to less than 12.5%, Sn: 0.1% to 20.0% in terms of percent (%) by mass, given amounts of optional elements, and impurities, and has a chemical composition that satisfies the following Formulas 1 to 5: Bi+In<Sn Formula 1:Y+La+Ce≤Ca Formula 2:Si<Sn Formula 3:0≤Cr+Ti+Ni+Co+V+Nb+Cu+Mn<0.25 Formula 4:0≤Sr+Sb+Pb+B<0.5. Formula 5:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.