Hindalco's lampcap stock combines strength and
high formability with high resistance to softening
in vitriting. Manufactured at modern and well-equipped
mills, it can be rolled to very fine tolerances,
allowing more caps per tonne of coil and enabling
uninterrupted operations of high-speed forming
presses.
| Dimensions |
|
Parameter
|
Stock
for bulb caps
|
Stock
for Tube caps
|
|
Range
|
Tolerance
|
Range
|
Tolerance
|
| Thickness
(mm) |
0.25
— 0.40
|
+/-0.02
|
0.30
— 0.40
|
+/-0.02
|
| Width
(mm) |
50
— 500
|
+/-0.30
|
50
— 500
|
+/-0.30
|
| Coil
I.D (mm) |
without
core 203
|
-
|
without
core 203
|
-
|
| Coil
density (kg/mm) |
1.80
max
|
-
|
1.8
max
|
-
|
| Mechanical
properties |
|
Type
|
Alloy
(AA)
|
Temper
|
UTS
(mpa)
|
%E
(min)
(50 mm gauge length)
|
|
Min
|
Max
|
Stock
for
bulb caps |
L8S*
|
O
|
170
|
205
|
13
|
|
3004
|
O
|
150
|
200
|
13
|
|
5251
|
O
|
165
|
210
|
13
|
Stock
for
tube caps |
8011
|
H14
|
125
|
160
|
1
|
|
H16
|
150
|
180
|
1
|
| *L8S
is a Hindalco innovation |
| Chemical
composition |
|
Alloy
(%)
|
Stock
for bulb caps
|
Stock
for tube caps
|
|
L8S
|
AA
3004
|
AA
5251
|
AA
8011
|
| Fe
|
0.70
|
0.70
|
0.50
|
0.60
— 1.00
|
| Si
|
0.30
|
0.30
|
0.40
|
0.50
— 0.90
|
| Mg
|
1.20
— 1.60
|
0.80
— 1.30
|
1.80
— 2.40
|
0.05
|
| Mn
|
0.80
— 1.30
|
1.00
— 1.50
|
0.10
— 0.50
|
0.20
|
| Cu
|
0.10
|
0.25
|
0.15
|
0.10
|
| Zn
|
0.25
|
0.25
|
0.15
|
0.10
|
| Ti
|
-
|
-
|
0.15
|
0.08
|
| Cr
|
0.25
|
-
|
0.15
|
0.05
|
| Each
(Others) |
0.05
|
0.05
|
0.05
|
0.05
|
| Total
(Others) |
-
|
0.15
|
0.15
|
0.15
|
| Al
|
Remainder
|
Remainder
|
Remainder
|
Remainder
|
| Surface
quality |
| Surface
has a corrosion resistant oil coating.
|
| Applicable
standards |
| ASTM
- B - 209M, Aluminium association —
aluminium standards and data, Hindalco
manufacturing limits (as applicable). |
| L8S
is a Hindalco innovation. |
Packing
Lampcap
stock is placed on wooden skids in an eye-to-wall
position. It is wrapped in HDPE fabric and hardboard
and strapped with hoop iron. Moisture protection
is ensured with silica gel packets and the entire
packed product is placed in a wooden box.
|
|
 |
|
|
| |
| |
|
| |
 |
|
| |
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. |
|
|
|