3105 Aluminum Alloy Sheets for Closures (beverage container caps)
Aluminum Closure Sheets for bottle closure is rolled to very fine tolerances to yield more closure per tonne of stock and to allow uninterrupted operation of high-speed, multiple-cavity presses. Such closure sheet its strength, high formability, low Earring and printable surfaces make it ideal for pilfer-proof caps and vial seals.
| Closure sheet Dimensions |
| Parameter |
Range |
Standard |
Tolerance |
| Thickness (mm) |
0.18 _ 0.25 |
0.18, 0.20 |
+0.005/-0.005 |
| Width (mm) |
50 _ 1250 |
813, 845, 833.8, 835 |
+0.5, -0 |
| Length (mm) |
400 _ 1000 |
655, 706 |
+0.5, -0 |
| Diagonal difference for sheet (mm) |
1 max |
- |
- |
| Coil sizes (mm) |
OD: 1450 max
ID: 75, 150, 300, 508 |
- |
- |
| Coil density (kg/mm) |
3.5 max |
- |
- |
| Offer for thickness and width outside the range may be quoted on specific request |
| Earing |
| Typical value: < 2 per cent for > =0.18 mm thickness |
| Aluminum Sheet Mechanical properties |
| Alloy (AA) |
Temper |
UTS (mpa) |
% E (min)
(at 50 mm gauge length) |
| Min |
Max |
| 3105 |
H14 |
150 |
200 |
1 |
| 8011 |
O |
8.5 |
12 |
15 |
| H14 |
125 |
170 |
1 |
| H24 |
125 |
160 |
1 |
| Aluminum Sheet Chemical composition |
| Alloy (%) |
AA 3105 |
AA 8011 |
| Fe |
0.70 |
0.6 _ 1.0 |
| Si |
0.60 |
0.5 _ 0.9 |
| Mg |
0.20 _ 0.80 |
0.05 |
| Mn |
0.3 _ 0.8 |
0.20 |
| Cu |
0.30 |
0.10 |
| Zn |
0.25 |
0.10 |
| Ti |
0.10 |
0.08 |
| Cr |
0.10 |
0.05 |
| Each (others) |
0.05 |
0.05 |
| Total (others) |
0.15 |
0.15 |
| Al |
Remaining |
Remaining |
| Single number indicates maximum content |
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