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 earing 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 |
| Earing
|
| 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.
|
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 |
|
|
| |
| |
|
| |
 |
|
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| |
Aluminium recycling
has
been a common practice
since the early 1900s. The process
does not damage
the metal's structure.
Recycling aluminium cans,
foil and foil containers helps
in conserving energy. |
|
|
|