Steel sheet with hot dip galvanized zinc alloy coating
AssigneeTata Steel Ijmuiden B.V.
InventorsTheodorus Franciscus Jozef Maalman, Robert Bleeker, Margot Julia Vlot
Life of this patent
Estimating the term…
Abstract
Steel strip provided with a hot dip galvanized zinc alloy coating layer, in which the coating of the steel strip is carried out in a bath of molten zinc alloy, the zinc alloy in the coating of: 0.3-2.3 weight % magnesium; 0.6-2.3 weight % aluminium; optional <0.2 weight % of one or more additional elements; unavoidable impurities; the remainder being zinc in which the zinc alloy coating layer has a thickness of 3-12 μm.
Claims20
A coated steel strip consisting of a steel strip provided with a coating of hot dip galvanized zinc alloy on the steel strip,
- wherein the steel strip consists of steel,
- wherein the zinc alloy consists of:
- 1.0-1.3 weight % magnesium;
- 1.6-1.9 weight % aluminium;
- less than 0.0010 weight % of silicon;
- <0.2 weight % Pb,
- <0.2 weight % Sb,
- <0.2 weight % Ti,
- <0.2 weight % Ca,
- <0.2 weight % Mn,
- <0.2 weight % Sn,
- <0.2 weight % La,
- <0.2 weight % Ce,
- <0.2 weight % Cr,
- <0.2 weight % Ni,
- <0.2 weight % Zr and
- <0.2 weight % Bi;
- unavoidable impurities;
- the remainder being zinc;
- wherein the zinc alloy coating layer has a thickness of 3-12 μm.
A coated steel strip consisting of a steel strip provided with a coating of hot dip galvanized zinc alloy on the steel strip,
- wherein the steel strip consists of steel,
- wherein the zinc alloy consists of:
- 1.0-1.2 weight % magnesium;
- 1.6-2.3 weight % aluminium;
- less than 0.0010 weight % of silicon;
- <0.2 weight % Pb,
- <0.2 weight % Sb,
- <0.2 weight % Ti,
- <0.2 weight % Ca,
- <0.2 weight % Mn,
- <0.2 weight % Sn,
- <0.2 weight % La,
- <0.2 weight % Ce,
- <0.2 weight % Cr,
- <0.2 weight % Ni,
- <0.2 weight % Zr and
- <0.2 weight % Bi;
- unavoidable impurities;
- the remainder being zinc;
- wherein the zinc alloy coating layer has a thickness of 3-12 μm.
Dependencies are inferred from the claim text.