Crow Brand Tufnol
Crow Brand Tufnol is suitable for mechanical applications where tough rugged components are needed. Crow Brand Tufnol has excellent impact strength with good general toughness and wear resistance. It is used for electrical insulation at low voltage.
Applications:
A wide range of large mechanical applications such as large gears, jigs and fixtures, rollers, impact blocks and many heavy duty components.
Availability:
| Typical Sheet Size (mm): |
1200x1200 |
| Thickness (mm): |
1 through to 228.4 |
| Rod Dia (mm): |
6 through to 150 |
| Length (mm): |
1200 up to 105mm Dia, 600 for larger sizes |
PAR can also supply tubular section, hexagonal bar and rectangular bar.
PAR can also offer Black Crow Brand Tufnol and Graphite Impregnated Crow Brand Tufnol.
Specifications:
| Sheet |
BS EN 60893-3-4 Type PF CC 201 |
| Round Rod |
BS EN 61212-3-3 Type PF CC 43 |
| Rectangular Bar |
BS 6128 Part 4 Type PF CC 45 |
| Hexagon Bar |
BS 6128 Part 6 Type PF CC 65 |
| Round Tube |
BS EN 61212-3-2 Type PF CC 34 |
| Rectangular Tube |
BS 6128 Part 13 Type PF CC 134 |
Technical Specification:
| Property |
Unit |
Result |
| Cross Breaking Strength |
MPa |
130 |
| Impact Strength - notched - charpy |
kJ/m² |
13.5 |
| Compressive Strength - flatwise |
MPa |
315 |
| Compressive Strength - edgewise |
MPa |
185 |
| Shear Strength - flatwise |
MPa |
90 |
| Tensile Strength |
MPa |
68 |
| Young's modulus |
GPa |
6.3 |
| Water Absorption - 1.6mm thick |
mg |
100 |
| Water Absorption - 3mm thick |
mg |
120 |
| Water Absorption - 6mm thick |
mg |
145 |
| Water Absorption - 12mm thick |
mg |
175 |
| Electric Strength flatwise in oil at 90ºC - 1.6mm thick |
MV/m |
3.5 |
| Electric Strength flatwise in oil at 90ºC - 3mm thick |
MV/m |
2.3 |
| Electric Strength flatwise in oil at 90ºC - 6mm thick |
MV/m |
1.8 |
| Electric Strength edgewise in oil at 90ºC |
KV |
10 |
| Insulation resistance after immersion in water |
ohms |
1x108 |
| Relative Density |
|
1.36 |
| Maximum Working Temperature - Continuous |
ºC |
120 |
| Maximum Working Temperature - Intermittent |
ºC |
130 |
| Thermal Classification |
|
Class E |
| Thermal Conductivity through Laminae |
W/(mK) |
0.35 |
| Thermal Expansion in plane of Laminae |
X 10-5 / K |
2.2 |
| Specific Heat |
kJ / (kgK) |
1.5 |
BACK