eFunda Polymers: Properties of Fluoroplastics {modified PE-TFE, unfilled}
engineering fundamentals Polymer Material Properties
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Fluoroplastics		  
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State: modified PE-TFE
Additives: unfilled
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Elastic Modulus (MPa)   828  tensile   D638
Flexural Modulus (MPa)   1380   23 ºC   D790
  552   94 ºC   D790
  414  122 ºC   D790
  138  149 ºC   D790
Tensile Strength (MPa)   45 at break   D638
Compressive Strength (MPa)
at yield or break		   49     D695
Flexural Strength (MPa)
at yield or break		   38     D790
Elongation at break (%)   100 - 400     D638
Hardness   50  Rockwell R   D638
  75  Shore D   D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted		  no break     D256A

 Thermal Properties Conditions
Pressure State ASTM
Coef of Thermal Expansion (10-6/ºC)   59     D696
Deflection Temperature (ºC)  105   0.46 MPa   D648
  72   1.82 MPa   D648
Thermal Conductivity (W/m-ºC)  0.238     C177

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  1.7   D792
Water Absorption (% weight increase)  0.03  after 24 hrs D570
Dielectric Strength (V/mil);
1/8" thick specimen unless noted		   400   D149

 Processing Properties Conditions
Type ASTM
Melting Temperature (ºC)  270  Tm, crystalline  
Processing Temperature (ºC)  302 - 330  compression molding  
 299 - 344  injection molding  
Molding Pressure (MPa)   14 - 138    
Linear Mold Shrinkage (cm/cm)  0.03 - 0.04   D955

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DuPont Co., Polymers Wilmington, DE  800-438-7225

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