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Vole Brand TUFNOL

Cotton fabric laminate

Medium/fine weave cotton/phenolic resin laminated plastic

(SRBF - Synthetic Resin Bonded Fabric)

 

A medium/fine grade for mechanical applications.

Vole Brand TUFNOL is a medium/fine weave grade for mechanical applications, where the finish requirements or shape of the component demand a slightly finer reinforcement than other general purpose grades .  It is excellent for screw threading and for other parts where good machining qualities are needed. It is suitable for electrical insulation at low voltages.

 

What is Vole Brand used for?

Vole Brand is used for mechanical applications where good machined finish is important, but where the benefits of the finest weave grades are not considered necessary, for example, medium/fine gears, threaded items, blades, wear resistant components and many similar items.



TYPES AVAILABLE

 

Sheets

 

Rods

 

Tubes

 

Other sections

Natural colour Vole Brand

 

Yes

Yes

Yes

Use Whale Brand



 SPECIFICATIONS for Vole Brand TUFNOL


BRITISH STANDARDS

Current Standards

Recent Standards (now obsolete)

Sheet

BS EN 60893-3-4 Type PF CC 203

BS 2572 Type F2

Round Rod

BS EN 61212-3-3 Type PF CC 42

BS 6128 Part 2 Type PF CC 23

Round Tube

BS EN 61212-3-2 Type PF CC 33

BS 6128 Part 9 Type PF CC 92

NEMA*

 

 

Sheet

NEMA LI-1-1983 Type L

 

 

*Testing and certification to these standards is subject to special enquiry.   Standard quality testing is to British Standards.



PHYSICAL PROPERTIES


Vole Brand TUFNOL Sheet



PROPERTY

TYPICAL RESULT

UNITS

Cross breaking strength

145

MPa

Impact strength, notched, Charpy

9.5

kJ/m2

Compressive strength, flatwise

325

MPa

Compressive strength, edgewise

200

MPa

Shear strength, flatwise

98

MPa

Water Absorption

 

 

- 1.6mm thk.

90

mg

- 3mm thk.

105

mg

- 6mm thk.

130

mg

- 12mm thk.

160

mg

Electric strength, flatwise in oil at 90ºC

 

 

- 1.6mm thk.

4.5

MV/m

- 3mm thk.

2.5

MV/m

- 6mm thk.

2.0

MV/m

Electric strength, edgewise in oil at 90ºC

11

kV

Insulation resistance after immersion in water

1x108

ohms

Relative density

1.36

-

Maximum working temperature**

 

 

- continuous

120

ºC

- intermittent

130

ºC

Thermal classification

Class E

-

Thermal conductivity through laminae

0.32

W/(mK)

Thermal expansion in plane of laminae

2.2

X 10-5/ K

Specific heat

1.5

kJ/(kgK)

Test methods as BS EN 60893-2, where applicable.


Vole Brand TUFNOL Round Tube



PROPERTY

TYPICAL RESULT

UNITS

Axial compressive strength

180

MPa

Cohesion between layers

130

MPa

Water absorption

2.8

mg/cm2

Insulation resistance after immersion in water

2x107

ohms

Relative density

1.35

-

Test methods as BS EN 61212-2, where applicable.


Vole Brand TUFNOL Round Rod



PROPERTY

TYPICAL RESULT

UNITS

Flexural strength

140

MPa

Water absorption

2.9

mg/cm2

Insulation resistance after immersion in water

2x107

ohms

Axial electric strength in oil at 90ºC

4

kV

Relative density

1.35

-

Test methods as BS EN 61212-2, where applicable.

**Users of highly stressed components at temperatures approaching the maximum are recommended to seek further advice from Tufnol Composites Ltd.

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