Carp Brand Tufnol
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Data Sheet —TUFNOLCarp 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. TYPES AVAILABLE Sheets Rods Tubes Other sections Natural colour Yes Yes Yes Yes Black Carp Brand Yes* Graphite-impregnated Carp Brand Yes* Yes* Yes* Yes* * Minimum order quantities may apply.

Data Sheet SPECIFICATIONS for Carp Brand TUFNOL BRITISH STANDARDS Current Standards Recent Standards (now obsolete) Round Rod (Rolled &BS EN 61212-3-3 Type PF CC 41 moulded) Round Tube Rectangular Tube NEMA* BS 6128 Part 4 Type PF CC 41 & 42 (BS 6128 is now obsolete.) BS 6128 Part 6 Type PF CC 61 & 62 BS EN 61212-3-2 Type PF CC 31 BS 6128 Part 13 Type PF CC 131 Sheet NEMA LI-1-1983 Type LE DIN* Round Rod and Tube DIN 7735 TYPE Hgw 2088 & 2089 *Testing and certification to these standards is subject to special enquiry. Standard quality testing is to British Standards.

Data Sheet PHYSICAL PROPERTIESCarp Brand TUFNOL Sheet PROPERTY Cross breaking strength Impact strength, notched, Charpy Compressive strength, flatwise Compressive strength, edgewise Resistance to flatwise compression Shear strength, flatwise Tensile strength Young’s modulus Water Absorption - 1.6mm thk. - 3mm thk. - 6mm thk. - 12mm thk. Electric strength, flatwise in oil at 90°C - 1.6mm thk. - 3mm thk. - 6mm thk. info@tufnol.co.uk +44(0)121 356 9351 +44 (0)1355 233 876

Data Sheet —TUFNOL Electric strength, edgewise in oil at 90°C 23 kV Insulation resistance after immersion in7x109 ohms Maximum working temperature** - continuous 120 °C Thermal classification Class E - Thermal conductivity through laminae 0.37 W/(mK) Thermal expansion in plane of laminae 1.9 x 10-5/K 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 from TUFNOL Composites Ltd.

Data Sheet —TUFNOL Carp Brand TUFNOL Round Tjbe PROPERTY TYPICAL UNITS RESULT Axial compressive strength 180 MPa Cohesion between layers 140 MPa Insulation resistance after immersion in5x108 ohms Test methods as BS EN 61212-2. where applicable. Carp Brand TUFNOL Round Rod PROPERTY TYPICAL UNITS Insulation resistance after immersion in5x108 ohms water Axial electric strength in oil at 90°C 15 kV Test methods as BS EN 61212-2. where applicable.