Claims
- 1. Aluminum alloy sheet produced by a method, comprising:(a) continuously casting an aluminum alloy melt to form a cast strip; (b) heating the cast strip to a temperature ranging from about 820 to about 1,080° F. to induce recrystallization of the cast strip and form a heated cast strip; (c) hot rolling the heated cast strip to form a hot rolled strip; (d) cold rolling the hot rolled strip to form an intermediate cold rolled strip; and (e) continuously annealing the intermediate cold rolled strip in an induction heater to form aluminum alloy sheet, wherein the aluminum alloy sheet has a substantially equiaxed grain structure and a substantially uniform, fine-grain size throughout the volume of the sheet, wherein the sheet includes the following: (i) from about 0.10 to about 0.20 wt % manganese; (ii) from about 3.5 to about 4.9 wt % magnesium; (iii) from about 0.05 to about 0.10 wt % copper; (iv) from about 0.10 to about 0.20 wt % iron; and (v) from about 0.05 to about 0.10 wt % silicon, with the remainder being aluminum and incidental additional materials and impurities.
- 2. The aluminum alloy sheet of claim 1, wherein the sheet has an as-rolled yield strength that is at least about 46 ksi, an elongation of at least about 6%, an as-rolled tensile strength of at least about 57 ksi, and a tab strength of at least about 2 kg.
- 3. The aluminum alloy sheet of claim 1, wherein a container manufactured from the sheet has a minimum dome reversal strength of at least about 90 psi but no more than about 98 psi and a column strength of at least about 180 psi but no more than about 280 psi.
- 4. Aluminum alloy sheet produced by a method, comprising:(a) continuously casting an aluminum alloy melt to form a cast strip; (b) heating the cast strip to a temperature that is from about 20° F. to about 125° F. more than an input temperature of the cast strip to induce recrystallization of the cast strip; (c) hot rolling the heated cast strip to form a hot rolled strip; (d) cold rolling the hot rolled strip to form a cold rolled strip; and (e) annealing the cold rolled strip in an induction heater to form aluminum alloy sheet, wherein the aluminum alloy sheet has a substantially equiaxed grain structure and a substantially uniform, fine-grain size throughout the volume of the sheet wherein the sheet includes the following: (i) from about 0.10 to about 0.20 wt % manganese; (ii) from about 3.5 to about 4.9 wt % magnesium; (iii) from about 0.05 to about 0.10 wt % copper; (iv) from about 0.10 to about 0.20 wt % iron; and (v) from about 0.05 to about 0.10 wt % silicon, with the remainder being aluminum and incidental additional materials and impurities.
- 5. The aluminum alloy sheet of claim 4, wherein the sheet has an as-rolled yield strength that is at least about 46 ksi, an elongation of at least about 6%, an as-rolled tensile strength of at least about 57 ksi, and a tab strength of at least about 2 kg.
- 6. The aluminum alloy sheet of claim 4, wherein a container manufactured from the sheet has a minimum dome reversal strength of at least about 90 psi but no more than about 98 psi and a column strength of at least about 180 psi but no more than about 280 psi.
- 7. Aluminum alloy sheet produced by a method, comprising:(a) continuously casting an aluminum alloy melt to form a cast strip; (b) heating the cast strip to a temperature ranging from about 820 to about 1,080° F. to induce recrystallization of the cast strip and form a heated cast strip; (t) hot rolling the heated cast strip to form a hot rolled strip; (d) cold rolling the hot rolled strip to form an intermediate cold rolled strip; and (e) continuously annealing the intermediate cold rolled strip in an induction heater to form aluminum alloy sheet, wherein the sheet includes the following: (i) from about 0.05 to about 0.15 wt % manganese; (ii) from about 4.0 to about 4.7 wt % magnesium; (iii) from about 0.05 to about 0.10 wt % copper; (iv) from about 0.20 to about 0.30 wt % iron; and (v) from about 0.05 to about 0.10 wt % silicon, with the remainder being aluminum and incidental additional materials and impurities.
- 8. The aluminum alloy sheet of claim 7, wherein a container manufactured from the sheet has a minimum dome reversal strength of at least about 90 psi but no more than about 98 psi and a column strength of at least about 180 psi but no more than about 280 psi.
- 9. Aluminum alloy sheet produced by a method, comprising:(a) continuously casting an aluminum alloy melt to form a cast strip; (b) heating the cast strip to a temperature ranging from about 820 to about 1,080° F. to induce recrystallization of the cast strip and form a heated cast strip; (c) hot rolling the heated cast strip to form a hot rolled strip; (d) cold rolling the hot rolled strip to form an intermediate cold rolled strip; and (e) continuously annealing the intermediate cold rolled strip in an induction heater to form aluminum alloy sheet, wherein said sheet includes the following: (i) from about 0.05 to about 0.15 wt % manganese; (ii) from about 4.0 to about to about 4.7 wt % magnesium; (iii) from about 0.05 to about 0.10 wt % copper; (iv) from about 0.20 to about 0.30 wt % iron; and (v) from about 0.05 to about 0.15 wt % silicon, with the remainder being aluminum and incidental additional materials and impurities.
- 10. The aluminum alloy sheet of claim 9, wherein the sheet has an after-coated yield strength of at least about 47.5 ksi, an after-coated ultimate tensile strength of at least about 53 ksi, and an elongation of at least about 6%.
- 11. The aluminum alloy sheet of claim 9, wherein a container manufactured from the sheet has a minimum dome reversal strength of at least about 90 psi but no more than about 98 psi and a column strength of at least about 180 psi but no more than about 280 psi.
- 12. Aluminum alloy sheet produced by a method, comprising:(a) continuously casting an aluminum alloy melt to form a cast strip; (b) heating the cast strip to a temperature ranging from about 820 to about 1,080° F. to induce recrystallization of the cast strip and form a heated cast strip; (c) hot rolling the heated cast strip to form a hot rolled strip; (d) cold rolling the hot rolled strip to form an intermediate cold rolled strip; and (e) continuously annealing the intermediate cold rolled strip in an induction heater to form aluminum alloy sheet, wherein the sheet includes the following: (i) no more than about 0.05 wt % manganese; (ii) from about 0.05 to about 0.10 wt % magnesium; (iii) from about 0.05 to about 0.10 wt % copper; (iv) from about 0.4 to about 1.0 wt % iron; and (v) from about 0.3 to about 1.1 wt % silicon, with the remainder being aluminum and incidental additional materials and impurities.
- 13. The aluminum alloy sheet of claim 12, wherein a container manufactured from the sheet has a minimum dome reversal strength of at least about 90 psi but no more than about 98 psi and a column strength of at least about 180 psi but no more than about 280 psi.
- 14. Aluminum alloy sheet produced by a method, comprising:(a) continuously casting an aluminum alloy melt to form a cast strip; (b) hot rolling the cast strip to form a hot rolled strip; (c) cold rolling the hot rolled strip to form an intermediate cold rolled strip; and (d) continuously annealing the intermediate cold rolled strip in an induction heater to form aluminum alloy sheet, wherein the sheet includes the following: (i) from about 0.05 to about 0.15 wt % manganese; (ii) from about 4.0 to about 4.7 wt % magnesium; (iii) from about 0.05 to about 0.10 wt % copper; (iv) from about 0.20 to about 0.30 wt % iron; and (v) from about 0.05 to about 0.10 wt % silicon, with the remainder being aluminum and incidental additional materials and impurities.
- 15. The aluminum alloy sheet of claim 14, wherein the sheet has an after-coated yield strength of at least about 47.5 ksi, an after-coated ultimate tensile strength of at least about 53 ksi, and an elongation of at least about 6%.
- 16. The aluminum alloy sheet of claims 14, wherein a container manufactured from the sheet has a minimum dome reversal strength of at least about 90 psi but no more than about 98 psi and a column strength of at least about 180 psi but no more than about 280 psi.
- 17. Aluminum alloy sheet produced by a method, comprising:(a) continuously casting an aluminum alloy melt to form a cast strip; (b) hot rolling the cast strip to form a hot rolled strip; (c) cold rolling the hot rolled strip to form an intermediate cold rolled strip; and (d) continuously annealing the intermediate cold rolled strip in an induction heater to form aluminum alloy sheet, wherein said sheet includes the following: (i) from about 0.05 to about 0.15 wt % manganese; (ii) from about 4.0 to about to about 4.7 wt % magnesium; (iii) from about 0.05 to about 0.10 wt % copper; (iv) from about 0.20 to about 0.30 wt % iron; and (v) from about 0.05 to about 0.15 wt % silicon, with the remainder being aluminum and incidental additional materials and impurities.
- 18. The aluminum alloy sheet of claim 17, wherein the sheet has an after-coated yield strength of at least about 47.5 ksi, an after-coated ultimate tensile strength of at least about 53 ksi, and an elongation of at least about 6%.
- 19. The aluminum alloy sheet of claim 17, wherein a container manufactured from the sheet has a minimum dome reversal strength of at least about 90 psi but no more than about 98 psi and a column strength of at least about 180 psi but no more than about 280 psi.
- 20. Aluminum alloy sheet produced by a method, comprising:(a) continuously casting an aluminum alloy melt to form a cast strip; (b) hot rolling the cast strip to form a hot rolled strip; (c) cold rolling the hot rolled strip to form an intermediate cold rolled strip; and (d) continuously annealing the intermediate cold rolled strip in an induction heater to form aluminum alloy sheet, wherein the sheet includes the following: (i) no more than about 0.05 wt % manganese; (ii) from about 0.05 to about 0.10 wt % magnesium; (iii) from about 0.05 to about 0.10 wt % copper; (iv) from about 0.4 to about 1.0 wt % iron; and (v) from about 0.3 to about 1.1 wt % silicon, with the remainder being aluminum and incidental additional materials and impurities.
- 21. The aluminum alloy sheet of claim 20, wherein a container manufactured from the sheet has a minimum dome reversal strength of at least about 90 psi but no more than about 98 psi and a column strength of at least about 180 psi but no more than about 280 psi.
CROSS-REFERENCE TO RELATED APPLICATIONS
This application is a divisional of U.S. patent application Ser. No. 08/869,245, filed Jun. 4, 1997 now U.S. Pat. No. 5,976,279.
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