Aluminum die-casting alloy
View Patent ↗An aluminum-magnesium alloy for casting operations consisting of, in weight percent, Mg 2.7-6.0, Mn 0.4-1.4, Zn 0.10-1.5, Zr 0.3 max., V 0.3 max., Sc 0.3 max., Ti 0.2 max., Fe 1.0 max., Si 1.4 max., balance aluminum and inevitable impurities. The casting alloy is particularly suitable for application in die-casting operations. Further the invention relates to the method of use of the casting alloy for die-casting automotive components.
1. A method of making a die-cast product comprising, die-casting an aluminium alloy consisting of, in weight percent:
Mg 4.5-6.0
Mn 0.4-1.4
Zn 0.10-0.9
Zr 0.05-0.25
V 0.3 max.
Sc 0.3 max.
Ti 0.2 max.
Fe 1.0 max.
Si 1.4 max.
Be 0.005 max.
impurities each 0.05 max.
total 0.25 max.
balance aluminum.
2. The method according to claim 1 , wherein the alloy has a Mg content in the range of 5.0 to 6.0%.
3. The method according to claim 1 , wherein the alloy has a Mg content in the range of 5.2 to 5.8%.
4. The method according to claim 1 , wherein the alloy has a Zn content in the range of 0.3 to 0.9%.
5. The method according to claim 1 , wherein the alloy has a Zn content in the range of 0.4 to 0.9%.
6. The method according to claim 1 , wherein the alloy has a Zn content in the range of 0.45 to 0.9%.
7. The method according to claim 1 , wherein the alloy has a Fe content in the range of at most 0.5%.
8. The method according to claim 1 , wherein the alloy has a Fe content in the range of at most 0.3%.
9. The method according to claim 1 , wherein the alloy has a Fe content in the range of at most 0.2%.
10. The method according to claim 1 , wherein the alloy has a Si content in the range of 0.10 to 1.4%.
11. The method according to claim 1 , wherein the alloy has a Si content in the range of 0.15 to 1.4%.
12. The method according to claim 1 , wherein the alloy has a Si content of 1.0% max.
13. The method according to claim 1 , wherein the alloy has a Si content of 0.5% max.
14. The method according to claim 1 , wherein the alloy has a Si content of 0.3% max.
15. The method according to claim 1 , wherein the alloy has a Si content of 0.10% min.
16. The method according to claim 1 , wherein the alloy has a Si content of 0.15% min.
17. The method according to claim 1 , wherein the alloy has a Mn content in the range of 0.4 to 1.2%.
18. The method according to claim 1 , wherein the alloy has a Mn content in the range of 0.4 to 0.8%.
19. The method according to claim 1 , wherein the alloy has a Mn content in the range of 0.45 to 0.8%.
20. The method according to claim 1 , wherein the alloy has a Zr content in the range of 0.06 to 0.16%.
21. The method according to claim 1 , wherein the alloy has a V content in the range of 0.05 to 0.25%.
22. The method according to claim 1 , wherein the alloy has a V content in the range of 0.1 to 0.2%.
23. The method according to claim 1 , wherein the alloy has a Ti content in the range of 0.01 to 0.14%.
24. The method according to claim 1 , wherein the alloy has a Mg/Zn weight ratio of at least 6.0.
25. The method according to claim 1 , wherein the die-cast aluminum alloy product in the as-cast condition has an elongation of at least 10%.
26. The method according to claim 1 , wherein the die-cast aluminum alloy product in the as-cast condition has an elongation of at least 12%.
27. The method according to claim 1 , wherein the die-cast aluminum alloy product in the as-cast condition has a yield strength of more than 160 MPa.
28. The method according to claim 1 , wherein the die-cast aluminum alloy product in the as-cast condition has a yield strength of more than 175 MPa.
29. The method according to claim 1 , wherein the die-cast aluminum alloy product in the as-cast condition has a tensile strength of more than 250 MPa.
30. The method according to claim 1 , wherein the die-cast aluminum alloy product in the as-cast condition has a tensile strength of more than 280 MPa.
31. The method according to claim 1 , wherein the die-casting is of safety components for a vehicle.
32. The method according to claim 1 , wherein the die-casting is of a frame member for a vehicle.