PTFE Detailed Properties(2)

Thermal Conductivity
BTU/hr/ft2/deg F in 1.7
cal/sec/cm2,ºC/cm 6 x 10-4
Linear Coefficient of Thermal Expansion 10-5 °C D696 >11.6
Heat of Fusion BTU/LB 29-37
Heat of Combustion BTU/LB 2200
Low Temperature Embrittlement °C
(°F) -268
(-450)
ELECTRICAL PROPERTIES
Dielectric Constant D150/103Hz 2.1
D150/106Hz 2.1
Dielectric Strength
10 mil film D149 >1400
Volume Resistivity ohm-cm D257 >1018
Surface Resistivity
ohm/sq. D257 >1017
GENERAL PROPERTIES
Chemical/Solvent
Resistance D543 Excellent
Water Absorption, 24h % <0.01
Deformation Under Load *D621/100°C 5.0
**D621/25°C 7.0
Refractive Index 1.35
Limiting Oxygen Index >95 >95
Properties ASTM or Unit PTFE
*6.8 MPa (986 psi),24h
**13.7 MPa (1987 psi),24h