Summary of Properties - Extruded Fluoropolymers

 

Property ASTM Units PTFE FEP PFA ETFE PVDF PEEK LDPE HDPE
MECHANICAL
Tensile Strength D1708 PSI 2,500-4,000 3.500 4.000 7.500 D638
5,000
D638
13,300
D638
2,100
D638
4,500
Specific Gravity D792   2.13-2.24 2.15 2.15 1.70 1.8 1.32 0.92-0.94 0.95-0.97
Coefficient of Friction Dynamic
(<10 ft/min)
   
0.1
 
0.2
 
0.2
 
0.23
 
0.3
 
0.35 -0.5
 
0.18
 
Compressive Strength D695 PSI 3.500 2.200   7.100 11.600 17.100 2,700-3,600
Impact Strength
73°F
 
D256
 
Ft-Lb/in
 
3.5
 
No Break
 
No Break
 
No Break
  
3-6
 
655
 
1.0
 
10
Flexural Modulus
73°F
 
D790
 
PSI
 
27.000
 
95.000
 
95.000
 
200.000
   
530.800
   
100.000
Tensile Modulus D638 PSI 80.000 60.000 40.000 120.000 348.000 522.100 38-75 155-155
Hardness-Durometer D2240   D-50-65 D-55 D-60 D-75 D-76-80   D50 D64
Elongation D1708 % 200-400 300 300 100-300 D638
150
D638
50
D638
425
D638
7,800
Flexural Strength D790 PSI No Break No Break No Break 37.9
5,500
10.750 24.700    
Water Absorption D570 % <0.01 <0.01 0.03 <0.03 <0.04 <0.05 <0.01 <0.01
Deformation Under Load
(73°F, 1000 PSI, 24 HR)
 
D621
   
3.5
 
1.8
 
2.0
 
0.6
       
Linear Coefficient of Expansion
(70-212°F)
(212-300°F)
(300-408°F)
D696 in/in/°F

 
7.5x10-5
8.5x10-5
10.5x10-5

 
4.5-5.8x10-5
 
6.7x10-5
9.4x10-5
11.1x10-5
 
5.0x10-4
 
7.0x10-4
 
7.1x10-5
 
2.6x10-5
 
In/In/°c
 
2x10-4
 
 In/In/°c
 
1.1x10-5
Flex Life (MIT)     >1,000,000 15.000 15.000 12.000        
Creep Resistance D674 LB/Sq In     40.000          
 
Property ASTM Units PTFE FEP PFA ETFE PVDF PEEK LDPE HDPE
ELECTRICAL
Dielectric Strength
(ShortTerm)
10Mil Film
 
D149
 
V/Mil
 
 
>1,400
 
 
>2,000
 
 
>2,000
 
 
>2,000
 
 
>1080
 
 
>500
 
 
450-1000
 
 
450-500
Volume Resistivity D257 ohm-cm >10-18 >10-18 10-18 >10-16 >1013 >4.9x10-16    
Surface Resistivity D257 ohm/Sq >10-18 >10-16 1017 >1014        
 
THERMAL
Continuous Service Temperature   °F 500 400 500 302 235 482 190 248
Melting Point DTA °F 635-650 500-530 575-590 490-535 352 633 350 370
Thermal Conductivity C-177 BTU/(hr*ft*F) 1.7 1.4 1.32 1.65 1.31 1.2    
Heat of Fusion   BTU/lb 29-37 11 13 20        
Specific Heat C-177 Cal/g/°C                
25°C
100°C
200°C
275°C
    0.23
0.25
0.27
0.29
0.26 0.256
0.283
0.334
0.391
0.46-0.47 0.30-0.34      
Low Temperature
Embrittlement
  °F     -150°          
Deflection Temperature
66 PSI
264 PSI
  °F

 
252
131

 
138
134
 
166
118
 
220
160
 
 
235
 
 
285
 
 
220
 
 
340
Heat of Combustion   BTU/lb 2.200   2.200 8.100        
 
OTHER
Flammability Rating UL 94   V0 V0 V0 V0 V0 V0 V0 V0
Refractive Index D542   1.35 1.338 1.35 1.40        
Limiting Oxygen Index     >95 >95 >95 30-31        

 

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