Specifications:
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.
Applications :
- Electronic circuit boards