Vole Brand TUFNOL
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Data Sheet —TUFNOLVole 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 Natural colour Vole Brand

Data Sheet SPECIFICATIONS for Vole Brand TUFNOL BRITISH STANDARDS Current Standards Recent Standards (now obsolete) 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 •Testing and certification to these standards is subject to special enquiry. Standard quality testing is to British Standards.

Data Sheet —TUFNOLPHYSICAL PROPERTIESVole Brand TUFNOL Sheet PROPERTY TYPICAL RESULT Cross breaking strength 145 Impact strength, notched, Charpy 9.5 Compressive strength, flatwise 325 Compressive strength, edgewise 200 Shear strength, flatwise 98 Water Absorption Electric strength, flatwise in oil at 90°C -1.6mm thk. 4.5 Electric strength, edgewise in oil at 90°C 11 Insulation resistance after immersion inlxl08 water Relative density 1.36

Data Sheet —TUFNOL Maximum working temperature** Thermal classification Class E Thermal conductivity through laminae 0.32 Thermal expansion in plane of laminae 2.2 Test methods as BS EN 60893-2, where applicable. Vole Brand TUFNOL Round Tlibe PROPERTY TYPICAL UNITS RESULT Axial compressive strength 180 MPa Cohesion between layers 130 MPa Insulation resistance after immersion in2x107 ohms Test methods as BS EN 61212-2, where applicable.

Data Sheet —TUFNOLVole Brand TUFNOL Round Rod PROPERTY TYPICAL UNITS Insulation resistance after immersion in2x107 ohms water Axial electric strength in oil at 90°C 4 kV 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.