|
Characteristics |
Requirement |
Frequency |
Control Method |
|
Product Control |
|
|
|
1 |
Visual |
Good and free from defects |
100% - daily |
Internal |
2 |
Dimensions |
As per Engineering drawing |
5% - daily |
Internal |
3 |
Tensile strength |
min 12 MPa (N/mm2) |
10 samples - daily |
ASTM D 638 |
4 |
Ultimate elongation |
min 300% |
10 samples - daily |
ASTM D 638 |
5 |
Hardness |
min 40 shore D |
Daily |
ASTM D 2240 |
6 |
Tensile strength after thermal aging (120°C, 168 hours) |
min 10 MPa (N/mm2) |
Qualification |
ISO - 188 |
7 |
Ultimate elongation after thermal aging (120° C, 168 hours) |
min 250% |
Qualification |
ISO - 188 |
8 |
Water absorption |
max 1% |
Qualification |
ISO - 62 |
9 |
Volume resistivity |
Max 2 * 104 ohm.cm |
Qualification |
IEC - 93 |
|
Raw material Control |
|
|
|
10 |
Tensile strength |
min 12 MPa (N/mm2) |
Compounding |
ASTM D 638 |
11 |
Ultimate elongation |
min 300% |
Compounding |
ASTM D 638 |
12 |
Hardness |
min 40 shore D |
Compounding |
ASTM D 2240 |
|
|
Frequency |
Agency |
|
|
Daily |
- Routine test during production |
In - house |
|
|
Qualification |
- Whichever is earlier of the following |
External & In - house |
|
|
|
a. At the time of introduction of new product |
|
|
|
|
b. After a significant change in formulation |
|
|
|
|
c. Every three years |
|
|
|
Compounding |
- After compounding of every batch of material |
External |
|