Steel sheet with hot dip galvanized zinc alloy coating

1. 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.

2. The coated steel strip according to claim 1 , wherein a layer of the zinc alloy coating has a thickness of 3-10 μm.

3. The coated steel strip according to claim 1 , wherein a layer of the zinc alloy coating has a thickness of 3-8 μm.

4. The coated steel strip according to claim 1 , wherein a layer of the zinc alloy coating has a thickness of 3-7 μm.

5. The coated steel strip according to claim 4 , wherein the amount of magnesium in the zinc alloy is 1.0-1.30 weight %.

6. The coated steel strip according to claim 1 , consisting of the steel strip and a respective layer of the zinc alloy coating on opposed sides of the steel strip.

7. The coated steel strip according to claim 1 , wherein in the zinc alloy coating there is

<0.1 weight % Pb,

<0.1 weight % Sb,

<0.1 weight % Ti,

<0.1 weight % Ca,

<0.1 weight % Mn,

<0.1 weight % Sn,

<0.1 weight % La,

<0.1 weight % Ce,

<0.1 weight % Cr,

<0.1 weight % Ni,

<0.1 weight % Zr and

<0.1 weight % Bi.

8. The coated steel strip according to claim 1 , wherein the zinc alloy contains 1.77-1.9 weight % aluminium.

9. The coated steel strip according to claim 8 , wherein the amount of magnesium in the zinc alloy is 1.0-1.2 weight %.

10. The coated steel strip according to claim 1 , wherein the amount of magnesium in the zinc alloy is 1.0-1.2 weight %.

11. Automotive part manufactured from a coated steel strip according to claim 1 .

12. The coated steel strip according to claim 1 , wherein the amount of magnesium in the zinc alloy is 1.0-1.30 weight %.

13. 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.

14. The coated steel strip according to claim 13 , wherein a layer of the zinc alloy coating has a thickness of 3-10 μm.

15. The coated steel strip according to claim 13 , wherein a layer of the zinc alloy coating has a thickness of 3-8 μm.

16. The coated steel strip according to claim 13 , wherein a layer of the zinc alloy coating has a thickness of 3-7 μm.

17. The coated steel strip according to claim 13 , consisting of the steel strip and a respective layer of the zinc alloy coating on opposed sides of the steel strip.

18. The coated steel strip according to claim 13 , wherein in the zinc alloy coating there is

<0.1 weight % Pb,

<0.1 weight % Sb,

<0.1 weight % Ti,

<0.1 weight % Ca,

<0.1 weight % Mn,

<0.1 weight % Sn,

<0.1 weight % La,

<0.1 weight % Ce,

<0.1 weight % Cr,

<0.1 weight % Ni,

<0.1 weight % Zr and

<0.1 weight % Bi.

19. The coated steel strip according to claim 13 , wherein the zinc alloy contains 1.77-2.3 weight % aluminium.

20. Automotive part manufactured from a coated steel strip according to claim 13 .