The TexLoc Library
Property Comparison Chart
 
 
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. There are 2 tables on this page.
 

Table 1

Table 2

PTFE   FEP   PFA   ETFE

PVDF

 (If you would like to view the properties of a particular resin click on the hyperlink in the chart below)

Table 1
Property Comparison of Fluoroplastic/Fluoropolymer Resins

Properties ASTM or Unit PTFE FEP PFA ETFE
MECHANICAL PROPERTIES
Specific GravityD792 2.13-2.202.12-2.17 2.12-2.171.70-1.76
Elongation % D638200-450 250-330280-400
Tensile Strength (psi)D638 2000-45002800-5000 4000-4500 6100-6800
Flexural Strength (psi) D790no break no breakno break 5500
Compressive Strength (psi)

D695

35002200  2500
Tensile Elastic Modulus 
(Young's Modulus) (psi)
D63857,000 50,00072,500-87,000 85000-
95000
Flexural Modulus (psi)D790 71,000-
85,000
78,000-
92,000
94,000-
99,000
128,000-
171,000
Flexural Modulus
103MPa (103kgf/cm2)
D7900.5-0.6
(5.0-6.0)
0.5-0.6
(5.5-6.5)
0.6-0.7
(6.6-7.0)
0.9-1.4
(9.0-14.0)
Flex Life
(MIT cycles)
D2176>1,000,000 5,000-
80,000
10,000-
500,000
10,000-
27,000
Hardness Durometer Shore DD636 50-655555-60 75
Coefficient of Friction  (on steel)0.020.05 0.20.06
Abrasion Resistance
1000 revs.
Taber 1214-209-17 na
Impact Strength IZOD
73F/23C notched ft/lbs/in
D2563no break no breakno break
THERMAL PROPERTIES
Melting Point C
(F)
327
(621)
260
(500)
305
582)
267
(512)
Upper Service
Temperature(20000h)
C
(F)
260
(500)
204
(400)
260
(500)
176
(348)
Flammability UL 94V-0V-0 V-0V-0
Thermal Conductivity
BTU/hr/sq ft/deg F in
  1.71.41.3 1.65
Thermal Conductivity
Cal-cm/s-cm2, C
 6 x 10-4 6 x 10-46 x 10-65.7 x 10-4
Linear Coefficient of
Thermal Expansion
D696
10-5 C
>11.68.3-10.513 13
Heat of Fusion BTU/LB29-3711 1320
Heat of CombustionBTU/LB 22002200 23008100
Low Temperature Embrittlement C
(F)
-268
-450
-268
-450
-268
-450
-100
-148
ELECTRICAL PROPERTIES
Dielectric Constant D150/103Hz 2.1 2.1 2.1 2.6
D150/106Hz 2.1 2.1 2.1 2.6
Dielectric Strength D149/125 MIL 500 500 500 na
D149/10 MIL >1400 >1400>14001600
Volume Resistivity D257/ohm-cm>1018 >1018>1018 >1016
Surface Resistivity D257/ohm-cm >1017 >1017 >1017 >1015
GENERAL PROPERTIES
Chemical/Solvent Resistance D543 Excellent Excellent Excellent Excellent
Water Absorption 24h,% D570 <0.01 <0.01 <0.03 <0.03
Deformation Under Load *D621 100 C 5.0 5.0 2.4 5.4
Deformation Under Load **D621 25 C 7.0 3.0 2.7 2.3
Refractive Index 1.35 1.338 1.34 1.40
Arc Resistivity, %
sec
  >300 >300 >300 75
D495 >200 >300 >300 122
Limiting Oxygen Index, % D2863 >95 >95 >95 31
Properties ASTM or Unit PTFE FEP PFA ETFE
*6.8MPa (986psi), 24h
**13.7MPa(1987psi), 24h

Table 2
Property Comparison of Fluoroplastic/Fluoropolymer Resins

Properties ASTM or Unit PVDF  
MECHANICAL PROPERTIES
Specific Gravity D792 1.76-1.78  
Elongation % D638 300-450
Tensile Strength (psi) D638 4500-6200
Flexural Strength (psi)   8600-9500
Compressive Strength

D695

11,600
Tensile Elastic Modulus 
(Young's Modulus) (psi)
D638 160,000
Flexural Modulus
103MPa (103kgf/cm2)
D790 90,00-
168,000
Flex Life
(MIT cycles)
D2176 na
Hardness Durometer Shore D D636 75-85
Coefficient of Friction (on steel) D1984 0.4
Abrasion Resistance
1000 revs.
Taber 5-15
Impact Strength IZOD
73F/23C notched ft/lbs/in
D256 4
THERMAL PROPERTIES
Melting Point C
(F)
171
(340)
 
Upper Service
Temperature(20000h)
C
(F)
130
(265)
Flammability UL 94 V-0
Thermal Conductivity
BTU/hr/sq ft/deg F in
C177 1.3
Linear Coefficient of
Thermal Expansion
D696
10-5 oC
4.2
Heat of Fusion BTU/LB
cal/g
na
4390
Heat of Combustion BTU/LB na
Low Temperature Embrittlement C
(F)
-62
(-80)
ELECTRICAL PROPERTIES
Dielectric Constant D150/103Hz 7.72  
D150/106Hz 6.43
Dielectric Strength D149/125 MIL 1700
D149/10 MIL >1080
Volume Resistivity D257/ohm-cm 2 x 1014
Surface Resistivity D257/ohm-cm 5 x 1014
GENERAL PROPERTIES
Chemical/Solvent Resistance Very Good  
Water Absorption 24h, % D570 <0.04
Refractive Index   1.42
Arc Resistivity, %, sec D495 50-60
Limiting Oxygen Index, % D2863 43
Properties ASTM or Unit PVDF  
 
 
 
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