ALUMINUM ALLOY SUITABLE FOR THE HIGH SPEED PRODUCTION OF ALUMINUM BOTTLE AND THE PROCESS OF MANUFACTURING THEREOF
The invention is related to compositions and methods comprising a new aluminum alloy system useful for aluminum bottle applications. In one aspect, the invention further relates to a method of producing highly shaped aluminum products, such as bottles or cans, comprising the aluminum alloy.
1 . An aluminum alloy comprising:
about 0.15-0.50 wt. % Si,
about 0.35-0.65 wt. % Fe,
about 0.05-0.30 wt. % Cu,
about 0.60-1.10 wt. % Mn,
about 0.80-1.30 wt. % Mg,
about 0.000-0.080 wt. % Cr,
about 0.000-0.500 wt. % Zn,
about 0.000-0.080 wt. % Ti,
up to 0.15 wt. % impurities, with the remainder Al.
2 . The alloy of claim 1 comprising:
about 0.20-0.40 wt. % Si,
about 0.40-0.60 wt. % Fe,
about 0.08-0.20 wt. % Cu,
about 0.70-1.00 wt. % Mn,
about 0.85-1.22 wt. % Mg,
about 0.000-0.070 wt. % Cr,
about 0.000-0.400 wt. % Zn,
about 0.000-0.070 wt. % Ti,
up to 0.15 wt. % impurities, with the remainder Al.
3 . The alloy of claim 2 comprising:
about 0.22-0.38 wt. % Si,
about 0.42-0.58 wt. % Fe,
about 0.10-0.18 wt. % Cu,
about 0.75-0.98 wt. % Mn,
about 0.90-1.15 wt. % Mg,
about 0.000-0.060 wt. % Cr,
about 0.000-0.300 wt. % Zn,
about 0.000-0.060 wt. % Ti,
up to 0.15 wt. % impurities, with the remainder Al.
4 . The alloy of claim 3 comprising:
about 0.27-0.33 wt. % Si,
about 0.46-0.54 wt. % Fe,
about 0.11-0.15 wt. % Cu,
about 0.80-0.94 wt. % Mn,
about 0.93-1.07 wt. % Mg,
about 0.000-0.050 wt. % Cr,
about 0.000-0.250 wt. % Zn,
about 0.000-0.050 wt. % Ti,
up to about 0.15 wt. % impurities, with the remainder as Al.
5 . The alloy of claim 3 comprising:
about 0.25-0.35 wt. % Si,
about 0.44-0.56 wt. % Fe,
about 0.09-0.160 wt. % Cu,
about 0.78-0.94 wt. % Mn,
about 0.90-1.1 wt. % Mg,
about 0.000-0.050 wt. % Cr,
about 0.000-0.250 wt. % Zn,
about 0.000-0.050 wt. % Ti,
up to 0.15 wt. % impurities, with the remainder Al.
6 . An aluminum alloy comprising:
about 0.12-0.28 wt. % Si,
about 0.32-0.52 wt. % Fe,
about 0.09-0.16 wt. % Cu,
about 0.78-0.96 wt. % Mn,
about 0.90-1.10 wt. % Mg,
about 0.000-0.050 wt. % Cr,
about 0.000-0.250 wt. % Zn,
about 0.000-0.050 wt. % Ti,
up to 0.15 wt. % impurities, with the remainder Al.
7 . A shaped aluminum bottle comprising the composition of claim 1 .
8 . A shaped aluminum bottle comprising the composition of claim 6 .
9 . A method of making the aluminum alloy of claim 1 comprising:
direct chill casting an aluminum ingot;
homogenizing the ingot;
hot rolling the homogenized ingot to form a hot rolled product;
cold rolling the hot rolled product in a first cold rolling step to form a first cold rolled product, wherein the first cold rolling step produces an about 60-90% thickness reduction; and
stabilization annealing of the second cold rolling product, wherein the stabilization annealing is at a metal temperature from about 100-300° C. for about 0.5-4 hrs.
10 . The method of claim 9 , wherein the stabilization annealing is at a metal temperature from about 120-250° C. for about 1-2 hrs.
11 . The method of claim 9 , wherein the cold rolling step is a first cold rolling step, the method further comprising cold rolling the first cold rolled product in a second cold rolling step to form a second cold rolled product, wherein the second cold rolling produces an about 15-30% thickness reduction.
12 . The method of claim 11 , further comprising:
prior to the second cold rolling step, recrystallization annealing the first cold rolled product, wherein the recrystallization annealing is at a metal temperature from about 290-500° C. for about 0.5-4 hrs.
13 . The method of claim 12 , wherein the recrystallization annealing is at a metal temperature from about 300-450° C. for about 1-2 hrs.
14 . The aluminum alloy of claim 1 comprising a recycled content of at least 60 wt. %
15 . The aluminum alloy of claim 14 comprising a recycled content of at least 75 wt. %.
16 . The aluminum alloy of claim 15 comprising a recycled content of at least 85 wt. %.
17 . The aluminum alloy of claim 6 comprising a recycled content of at least 60 wt. %
18 . An aluminum alloy made by the method of claim 9 .
19 . A shaped aluminum bottle comprising the aluminum alloy of claim 18 .