US2025236932A1PendingUtilityA1
Aluminum Alloy and Aluminum Strip for Producing Can Ends and Method for Its Production
Est. expiryOct 18, 2041(~15.2 yrs left)· nominal 20-yr term from priority
C22F 1/047B22D 21/04B22D 11/003C22C 21/08
45
PatentIndex Score
0
Cited by
0
References
0
Claims
Abstract
The invention relates to an aluminum alloy having the following composition 0.03 wt.-%≤Si≤0.6 wt.-%, 0.15 wt.-%≤Fe≤0.8 wt.-%, 0.02 wt.-%≤Cu≤0.25 wt.-%, 0.20 wt.-%≤Mn≤1.4 wt %, 3.0 wt %≤Mg≤5.0 wt %, Cr≤0.1 wt %, Zn≤0.25 wt %, Ti≤0.10 wt %, impurities individually max. 0.05 wt %, in total max. 0.15 wt %, remainder aluminum. The invention further relates to an aluminum strip made of this aluminum alloy and to a method for producing such an aluminum strip and its use.
Claims
exact text as granted — not AI-modified1 . An aluminum alloy having the following composition:
0.03
wt
%
≤
Si
≤
0.6
%
wt
%
,
0.15
wt
%
≤
Fe
≤
0.8
wt
%
,
0.02
wt
%
≤
Cu
≤
0.25
wt
%
,
0.2
wt
%
≤
Mn
≤
1.4
wt
%
,
3.
wt
%
≤
Mg
≤
5.
wt
%
,
Cr
≤
0.1
wt
%
,
Zn
≤
0.25
wt
%
,
Ti
≤
0.1
wt
%
,
impurities individually max. 0.05 wt %, in total max. 0.15 wt %,
remainder aluminum.
2 . The aluminum alloy according to claim 1 ,
wherein the Cr content is in the range 0.01-0.1 wt % and/or in that the Zn content is in the range 0.01-0.25 wt % and/or in that the Ti content is in the range 0.001-0.10 wt %.
3 . The aluminum alloy according to claim 1 ,
wherein the Mg content is in the range 3.0-5.0 wt %, preferably in the range 3.5-5.0 wt %, more preferably in the range 4.0-5.0 wt %.
4 . The aluminum alloy according to claim 1 ,
wherein the aluminium alloy has a Si content of more than 0.20 wt % and/or an Fe content of more than 0.35 wt % and/or a Cu content of more than 0.15 wt % and/or an Mn content of more than 0.5 wt %.
5 . An aluminum strip for producing can ends and/or can tabs from an aluminum alloy according to claim 1 .
6 . The aluminum strip according to claim 5 ,
wherein the aluminium strip has an aluminium scrap recyclate content, in particular old scrap recyclate content, of at least 5 wt %, preferably at least 30 wt %.
7 . The aluminum strip according to claim 5 ,
characterized in that the aluminium strip has a coating, in particular a stove enamel coating.
8 . The aluminum strip according to claim 5 ,
wherein the aluminium strip has a thickness in the range 0.20-0.24 mm.
9 . The aluminum strip according to claim 5 ,
wherein the aluminium strip ( 182 ) has a yield strength Rp0.2 in the range 250-400 MPa.
10 . A method for producing an aluminum strip according to claim 5 , comprising the steps:
providing a melt of an aluminum alloy, casting the melt into an ingot, preferably by DC casting, homogenizing the ingot, hot rolling the ingot to form a hot strip, cold rolling the hot strip to form a cold strip of final thickness, optionally with one or more intermediate annealing steps, the final thickness preferably being in the range 0.20-0.24 mm, optionally painting the cold strip, in particular stove enameling.
11 . The method according to claim 10 , wherein the melt is provided in a proportion of at least 5 wt %, preferably at least 30 wt %, by melting old scrap.
12 . A method for producing can ends and/or can tabs, comprising the step of using the aluminum alloy according to claim 1 .Join the waitlist — get patent alerts
Track US2025236932A1 — get alerts on status changes and closely related new filings.
We store only your email — no account needed. See our privacy policy.