eFunda Polymers: Properties of Polyester (thermoplastic) {poly(ethylene-terephthalate), 30% glass, flame-retardant}
engineering fundamentals Polymer Material Properties
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Polyester (thermoplastic)
 
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State: poly(ethylene-terephthalate)
Additives: 30% glass
Application: flame-retardant
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Flexural Modulus (MPa)  10626   23 ºC   D790
Tensile Strength (MPa)  128 at break   D638
Flexural Strength (MPa)
at yield or break
 190     D790
Elongation at break (%)   2     D638
Hardness   84  Rockwell M   D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted
  0.7     D256A

 Thermal Properties Conditions
Pressure State ASTM
Deflection Temperature (ºC)  237   0.46 MPa   D648
 218   1.82 MPa   D648

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  1.71   D792
Dielectric Strength (V/mil);
1/8" thick specimen unless noted
  427   D149

 Processing Properties Conditions
Type ASTM
Processing Temperature (ºC)  282 - 293  injection molding  
Compression Ratio  2 - 3    
Linear Mold Shrinkage (cm/cm)  0.001 - 0.004   D955

Suppliers
Eastman Chemical Co. Kingsport, TN  800-327-8626
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