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Carp Brand Tufnol
cotton fabric based laminate
Fine weave cotton/phenolic resin laminated plastic (SRBF
– Synthetic Resin Bonded Fabric)
A top quality grade for mechanical and
electromechanical applications.
Carp Brand TUFNOL is a top quality grade for mechanical
and electromechanical applications. It is made from a
premium quality fine weave cotton fabric which has been
specially treated to enhance the machinability and other
properties. Strong, with good wear resistance, it has
excellent machining qualities and low water absorption,
with good dimensional stability. Electrical properties
are excellent for this class of material. Resistance to
high impact, however, is slightly less than the coarser
weave grades of Tufnol.
What is Carp Brand TUFNOL used for?
Carp Brand is used for a wide variety of components
where premium quality is required. It is often chosen
for components with intricate features which need
accuracy and a fine machined finish. Typical components
include fine toothed gears, cams, geneva wheels, seal
retaining rings, actuating arms, insulating sleeves and
bushes, components for use at cryogenic temperatures,
insulation for low and medium voltages and a wide range
of other precision machined parts.
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TYPES AVAILABLE
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Sheets
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Rods
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Tubes
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Other sections |
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Natural colour |
Yes |
Yes |
Yes |
Yes |
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Black Carp Brand |
Yes* |
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Graphite-impregnated Carp Brand |
Yes* |
Yes* |
Yes* |
Yes* |
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* Minimum order quantities may apply.
SPECIFICATIONS
for Carp Brand TUFNOL
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BRITISH STANDARDS |
Current Standards |
Recent Standards (now obsolete) |
|
Sheet |
BS 2572 Type F1
BS EN 60893-3-4 Type PF CC 305 |
(BS 2572 will shortly become obsolete.) |
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Round Rod (Rolled & moulded) |
BS EN 61212-3-3 Type PF CC 41 |
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Rectangular Bar |
BS 6128 Part 4 Type PF CC 41 & 42 |
(BS 6128 will shortly become obsolete.) |
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Hexagon Bar |
BS 6128 Part 6 Type PF CC 61 & 62 |
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Round Tube |
BS EN 61212-3-2 Type PF CC 31 |
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Rectangular Tube |
BS 6128 Part 13 Type PF CC 131 |
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PHYSICAL PROPERTIES
Carp Brand TUFNOL Sheet
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PROPERTY |
TYPICAL RESULT |
UNITS |
|
Cross breaking strength |
150 |
MPa |
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Impact strength, notched, Charpy |
8.6 |
kJ/m2 |
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Compressive strength, flatwise |
350 |
MPa |
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Compressive strength, edgewise |
200 |
MPa |
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Resistance to flatwise compression |
1.4 |
% |
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Shear strength, flatwise |
105 |
MPa |
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Tensile strength |
68 |
MPa |
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Young's modulus |
6.5 |
GPa |
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Water Absorption |
|
|
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- 1.6mm thk. |
55 |
mg |
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- 3mm thk. |
70 |
mg |
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- 6mm thk. |
90 |
mg |
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- 12mm thk. |
125 |
mg |
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Electric strength, flatwise in oil at 90ºC |
|
|
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- 1.6mm thk. |
7.2 |
MV/m |
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- 3mm thk. |
4.9 |
MV/m |
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- 6mm thk. |
4.0 |
MV/m |
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Electric strength, edgewise in oil at 90ºC |
23 |
kV |
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Insulation resistance after immersion in water |
7x109 |
ohms |
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Relative density |
1.36 |
- |
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Maximum working temperature** |
|
|
|
- continuous |
120 |
ºC |
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- intermittent |
130 |
ºC |
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Thermal classification |
Class E |
- |
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Thermal conductivity through laminae |
0.37 |
W/(mK) |
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Thermal expansion in plane of laminae |
1.9 |
x 10-5/K |
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Specific heat |
1.5 |
kJ/(kgK) |
Test methods as BS EN 60893-2, where applicable.
**Users of highly stressed components at temperatures
approaching the maximum are recommended to seek further
advice.
Carp Brand TUFNOL Round Tube
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PROPERTY |
TYPICAL RESULT |
UNITS |
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Axial compressive strength
|
180 |
MPa |
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Cohesion between layers |
140 |
MPa |
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Water absorption |
2.4 |
mg/cm2 |
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Insulation resistance after
immersion in water |
5x108 |
ohms |
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Relative density |
1.35 |
- |
Test methods as BS EN 61212-2, where applicable.
Carp Brand TUFNOL Round Rod
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PROPERTY |
TYPICAL RESULT |
UNITS |
|
Flexural strength |
170 |
MPa |
|
Water absorption |
2.5 |
mg/cm2 |
|
Insulation resistance after immersion in water |
5x108 |
ohms |
|
Axial electric strength in oil at 90ºC |
15 |
kV |
|
Relative density |
1.35 |
- |
Test methods as BS EN 61212-2, where applicable.
The information given here is believed to
be correct, but completeness and accuracy are not
guaranteed. The user shall be fully responsible for
determining the suitability of products for the intended
use. |
