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Medical Tubing
PTFE Properties
   
 PTFE (Polytetrafluoroethylene)

Working Temperature: 500°F (260°C)
Color: Translucent to Opaque
  • Lowest coefficient of friction
  • Superior dielectric strength
  • Exceptional heat resistance
  • Self Extinguishing
  • Nonwetting
  • Excellent flexlife
  • Laser markable
  
The table below lists a generally accepted summary of properties that we believe to be reliable. Please note that many of these resins are produced in several varieties and property characteristics may vary. Therefore, determination of resin is dependent on the application and this table is only meant to serve as a general guideline.
 
 

PTFE Detailed Properties
 (Polytetrafluoroethylene)

Properties ASTM or Unit PTFE
MECHANICAL PROPERTIES
Specific Gravity D7922.18
Elongation % D638200~450
Tensile Strength (psi) D6382,000~4,500
Flexural Strength (psi) D790 no break
Compressive Strength

D695

3,500
Tensile Elastic Modulus 
(Young's Modulus) (psi)		 D63857,000
(psi)
Flexural Modulus
103MPa (103kgf/cm2)		D79071,000~
85,000
D7900.5-0.6
(5.0-6.0)
FlexLife
(MIT cycles)		D2176 >1,000,000
Hardness Durometer
 Shore D		 D636D50~65
Coefficient of Friction on steel0.02
Abrasion Resistance
1000 revs.		 Taber12
Impact Strength IZOD
73°F/23°C, notched ft/lbs/in		 D2563
THERMAL PROPERTIES
Melting Point °C
(°F)		327
(621)
Upper Service
Temperature(20,000h)		 °C
(°F)		 260
(500)
Flame Rating** UL 94V-0

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
 
 
 
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