|
Hindalco's Printed Circuit Board (PCB) entry
sheets are manufactured with state-of-the-art
equipment which matches international standards.
Tight thickness tolerance, flatness, dimensional
accuracy and grease-free surface and hardness
optimal for burr-free drilling required in
the manufacture of PCB are ensured.
Continuous upgrades and process improvement
enable us to keep pace with the demands of
its ever-growing clientele.
|
Dimensions
|
|
Parameter
|
Range
|
Tolerance
|
| Thickness
(mm) |
0.15
— 0.28
|
+/-0.01
|
| Width
(mm) |
1250
max
|
+/-1
|
| Length
(mm) |
2000
max
|
+/-1
|
| Diagonal
difference (mm) |
-
|
2
|
|
Mechanical
properties
|
|
Alloy
(AA)
|
Temper
|
UTS
(mpa)
|
%E(min)
(50mm gauge length)
|
|
Min
|
Max
|
|
3105
|
H18
|
190
|
-
|
1
|
|
8011
|
H18
|
175
|
-
|
1
|
|
1050
|
H18
|
125
|
-
|
1
|
| No
oil stain on sheet surface |
|
Chemical
composition
|
|
Alloy
(%)
|
AA
3105
|
AA
8011
|
AA
1050
|
|
Fe
|
0.70
|
0.60
— 1.00
|
0.25
— 0.35
|
|
Si
|
0.60
|
0.50
— 0.90
|
0.12
|
|
Mg
|
0.20
— 0.80
|
0.05
|
0.02
|
|
Mn
|
0.30
— 0.80
|
0.20
|
0.03
|
|
Cu
|
0.30
|
0.10
|
0.02
|
|
Zn
|
0.25
|
0.10
|
-
|
|
Ti
|
0.10
|
0.08
|
0.015
|
|
Cr
|
0.10
|
0.05
|
-
|
|
Each
(Others)
|
0.05
|
0.05
|
0.03
|
|
Total
(Others)
|
0.15
|
0.15
|
-
|
| Al
|
Remainder
|
Remainder
|
Remainder
|
| Applicable
standards |
|
|
ASTM-B-209M,
Aluminium association — aluminium
standards and data, Hindalco manufacturing
limits (as applicable). |
Packing
The
PCB entry sheets are wrapped with HDPE, hardboard
on top and bottom of the stack, hoop iron along
the length of the sheets and is placed on wooden
skids with runners and finally put in wooden
boxes. Silica gel packets for moisture protection
are used.
|