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Teflon Properties

TEFLON PROPERTIES : THERMAL
Properties ASTM PTFE PFA FEP ETFE ECTFE
Maximum Service Temp. °C 260° 260° 200° 150° 170°
°F 500° 500° 392° 302° 340°
Melting point °C 327° 305° 260° 267° 240°
°F 621° 582° 500° 512° 464°
Flame Rating UL 94 V-O V-O V-O V-O V-O
Minimum Service Temp. °C -240° -200° -240° -190° -76°
°F -400° -328° -400° -310° -104°
    PTFE PFA FEP ETFE ECTFE
             
TEFLON PROPERTIES : MECHANICAL 
Properties Units PTFE PFA FEP ETFE ECTFE
Specific Gravity D-792 2.18 2.15 2.15 1.74 1.68
Tensile Strength (psi) D-638 2,000-7,000 4,000-4,500 2,800-5,000 6,100-6,800 6,000-7,800
Flexural Strength (psi) D-790 no break no break no break 5,500 7,000
Compressive Strength D-695 3,500   2,200 2,500 1,276-1,711
Flex Life D-2176 greater then 1,000,000 10,000 up to 500,000 5,000 up to 80,000 10,000 up to 27,000 N/A
Hardness Durometer Shore D D-636 D 50-65 D 55-60 D 55 D 75 D 75-90
Coefficient of Friction On Steel .02 .04 .04 .06 .19
Abrasion Resistance Taber 12 9-17 14-20 N/A .005
    PTFE PFA FEP ETFE ECTFE
             
TEFLON PROPERTIES : ELECTRICAL 
Properties Units PTFE PFA FEP ETFE ECTFE
Dielectric Constant D150 / 103Hz 2.1 2.1 2.1 2.6 2.5
D150 / 106Hz 2.1 2.1 2.1 2.6 2.6
Dielectric Strength 10 mil Film D-149 >1,400 >2,000 >2,000 1,600 N/A
Volume Resistivity ohm-cm D-257 >1,018 >1,018 >1,018 >1,016 >1,016
Surface Resistivity ohm-cm D-257 >1,017 >1,017 >1,017 >1,015 >1,014
    PTFE PFA FEP ETFE ECTFE
             
TEFLON PROPERTIES : GENERAL
Properties Unit PTFE PFA FEP ETFE ECTFE
Chemical- Solvent Resistance D-543 Excellent Excellent Excellent Excellent Excellent
Water Absorption 24hr / % <.01 <.03 <.01 <.03 <.01
Refractive Index   1.35 1.34 1.338 1.4 1.447
Limiting Oxygen Index D-2863 > 95 min 95 min 95 min 30-46 min 52 min
    PTFE PFA FEP ETFE ECTFE