Specifications:
Hindalco's closure stock 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. Its strength, high formability, low earring and printable surfaces make it ideal for pilfer-proof caps and vial seals.
| Dimensions |
| Parameter |
Range |
Standard |
Tolerance |
|
Thickness
(mm)
|
0.18
- 0.25
|
0.18,
0.20
|
+0.005/-0.01
|
|
Width
(mm)
|
50
- 1250
|
867,
762, 584
|
+2,
-0
|
|
Length
(mm)
|
400
— 1000
|
- |
+2,
-0
|
| Diagonal
difference for sheet (mm) |
2
max |
- |
- |
|
Coil
sizes (mm)
|
OD:
1450 max
ID: 203, 250, 508 |
- |
- |
|
Coil
density (kg/mm)
|
3.5
max
|
- |
- |
| Offer
for thickness and width outside the range
may be quoted on specific request |
| Flatness |
| Less
than 20 I units (typical) |
| For
example: |
| :: |
20
I unit means; in length of 1 meter |
| :: |
1
wave sum of rises 5 mm, avg. rise of each
wave 5.00 mm |
| :: |
4
wave sum of rises 8 mm, avg. rise of each
wave 2.00 mm |
| :: |
6
wave sum of rises 8 mm, avg. rise of each
wave 1.30 mm |
| Earring |
| Typical
value: < 2 per cent for >=0.18
mm thickness |
|
Mechanical
properties
|
| Alloy
(AA) |
Temper |
UTS
(mpa) |
%
E (min)
(at 50 mm
gauge length) |
| Min |
Max |
|
3003
|
H14 |
125 |
170 |
1 |
|
H16
|
165
|
205
|
1
|
|
3105
|
H14
|
150
|
200
|
1
|
| 8011 |
O |
8.5 |
12 |
15 |
| H14 |
125 |
170 |
1 |
| H24 |
125 |
160 |
1 |
|
Chemical
composition
|
| Alloy
(%) |
AA
3003 |
AA
3105 |
AA
8011 |
|
Fe
|
0.70
|
0.70
|
0.6
— 1.0
|
|
Si
|
0.60
|
0.60
|
0.5
— 0.9
|
|
Mg
|
0.05
|
0.20
— 0.80
|
0.05
|
|
Mn
|
1.00
— 1.50
|
0.3
— 0.8
|
0.20
|
|
Cu
|
0.05
— 0.20
|
0.30
|
0.10
|
|
Zn
|
0.10
|
0.25
|
0.10
|
|
Ti
|
0.05
|
0.10
|
0.08
|
|
Cr
|
0.05
|
0.10
|
0.05
|
|
Each
(others)
|
0.05
|
0.05
|
0.05
|
|
Total
(others)
|
0.15
|
0.15
|
0.15
|
|
Al
|
Remainder
|
Remainder
|
Remainder
|
| Single
number indicates maximum content |
Packing
Sheet: Sheets are placed in wooden boxes on wooden skids with runners along the length of the sheet. They are wrapped in HDPE with hardboard on top and bottom of the stack. Hoop iron strapping runs along the length of the sheets. Silica gel packets are put in the boxes for moisture protection.
Alternatively, they are wrapped in a poly-laminated gunny or polythene, strapped with a hoop iron strap and clip and placed on a wooden pallet. Edge guards are used and the sheets are wrapped with protective thermocol sheets.
Coil: Coil is placed on wooden pallets in either eye-to-sky or eye-to-wall condition, wrapped in HDPE fabric and hardboard, and strapped with hoop iron. Silica gel packets are used for moisture protection.
Applications :
- Pilfer-proof caps
- Vial seals
- Cream containers and caps