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Teflon Specs

        Virgin Teflon 25% Glass Reinforced Teflon Fluorosint 207 Fluorosint 500 Semitron ESD500
    Units ASTM Test Method Polytetrafluoro-ethylene 25% Glass Filled Polytetrafluoro-ethylene FDA Synthetic Mica-Filled PTFE Synthetic Mica-Filled PTFE Electrostatic Dissapative PTFE
MECHANICAL Strength to Weight Ratio ksi -          
Specific Gravity @73 F - D792 2.16 2.22 2.30 2.32 2.30
Tensile Strength @73 F, (ult)/(yld) psi D638 4500 (ult) 2800 (ult) 1500 1100 1500
Tensile Modulus of Elasticity @ 73 F psi D638 - - 250000 300000 250000
Tensile Elongation at Break @ 73 F % D638 400 325 50 10 50
Flexural Strength @ 73 F psi D790 - - 2000 2200 2200
Flexural Modulus of Elasticity @ 73 F psi D790 50000-90000 - 350000 500000 350000
Shear Strength @ 73 F psi D732 - - 1700 2100 1700
Compressive Strength, (% Deformation) @73 F psi D695 600 (1) 1000 (1) 3800 (10) 4000 (10) 3800 (10)
Compressive Modulus of Elasticity @73 F psi D695 - - 225000 250000 225000
Hardness, Rockwell, Scale as noted @73 F - D785 - - (R50) (R55) (R50)
Hardness, Durometer, Shore D @73 F - D2240 D55 D54 D65 D70 D65
Izod Impact, (Notched) @73 F ft-lb/in of notch D256 TypeA 3.0 - 1.0 0.9 1.0
Coefficient of Friction, (Dry vs. Steel) Dynamic - - .05-.08 .10-.13 0.17 0.18 0.17
Limiting PV, (with 4 to 1 factor of safety applied) psi-ft/min - - - 8000 8000 8000
THERMAL Coefficient of Linear Thermal Expansion @73 F in/in/F E-831 (TMA) 7.0E-05 3-8E-05 5.7E-05 2.4E-05 5.7E-05
Heat Deflection Temperature @ 264 psi F D648 115 - 210 270 210
Tg-Glass transition temperature, (Amorphous) F D3418 - - - - -
Melting Point, (VS=Vicat Softening Temp.) F D3418 621 621 621 621 621
Continuous Service Temperature in Air, (Max.) F - 500 500 500 500 500
Thermal Conductivity BTU-in/hr-ft2-F - 1.70 2.60 - 5.30 -
ELECTRICAL Dielectric Strength, Short Term Volts/mil D149 600 - 200 275 -
Volume Resistivity ohm-cm D257 >10E+18 - >1E13 >1E14 1E11-1E13
Dielectric Constant @ 10E6 Hz - D150 - - 2.7 2.9 -
Dissipation Factor @ 10E6 Hz - D150 - - 0.008 0.008 -
Flammability @ 3.1 mm unless noted - UL94 V-0 - V-0 V-0 V-0
H20 Water Absorbtion, Immersion, 24 Hrs % by wt. D570(7) 0.00 - 0.03 0.10 0.03
Water Absorbtion, Saturation % by wt. D570(7) - - 2.00 3.00 2.00

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