10G40 Grade Tufnol
The most widely used grade, suitable for continuous use at temperatures up to approximately 130ºC.
| Type |
Sheets |
Rods |
Tubes |
Other sections |
| Grade 10G/40-Natural colour |
Yes |
Yes |
No |
No |
Specifications:
| Sheet |
BS EN 60893-3-2 Type EP GC 201 |
| Rectangular Bar |
BS 6128 Part 4 Type PF CC 41 & 42 |
Technical Specification:
| Property |
Unit |
Result |
| Cross Breaking Strength |
MPa |
490 |
| Impact Strength - notched - charpy |
kJ/m² |
60 |
| Compressive Strength - flatwise |
MPa |
415 |
| Compressive Strength - edgewise |
MPa |
300 |
| Shear Strength - flatwise |
MPa |
355 |
| Water Absorption - 1.6mm thick |
mg |
5 |
| Water Absorption - 3mm thick |
mg |
7 |
| Water Absorption - 6mm thick |
mg |
10 |
| Water Absorption - 12mm thick |
mg |
15 |
| Electric Strength flatwise in oil at 90ºC - 1.6mm thick |
MV/m |
17 |
| Electric Strength flatwise in oil at 90ºC - 3mm thick |
MV/m |
15 |
| Electric Strength flatwise in oil at 90ºC - 6mm thick |
MV/m |
12 |
| Electric Strength edgewise in oil at 90ºC |
KV |
75 |
| Insulation resistance after immersion in water |
ohms |
1x1011 |
| Loss tangent at 1 MHz |
|
0.017 |
| Permittivity at 1 MHz |
|
5.0 |
| Comparitive Tracking Index |
|
285 |
| Relative Density |
|
1.90 |
| Maximum Working Temperature - Continuous |
ºC |
130 |
| Maximum Working Temperature - Intermittent |
ºC |
150 |
| Thermal Classification |
|
Class B |
| Thermal Conductivity through Laminae |
W/(mK) |
0.42 |
| Thermal Expansion in plane of Laminae |
X 10-5 / K |
1.1 |
| Flexural strength |
600MPa |
| Water absorption |
0.5mg/cm² |
| Insulation resistance after immersion in water |
5x109ohms |
| Axial electric strength in oil at 90ºC |
70kV |
| Relative desity |
1.90 |
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