eFunda Polymers: Properties of Polyester (thermoplastic) {poly(ethylene-terephthalate), 60% long glass fiber reinforced}
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Polyester (thermoplastic)
 
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State: poly(ethylene-terephthalate)
Additives: 60% long glass fiber reinforced
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Elastic Modulus (MPa)  20700  tensile   D638
Flexural Modulus (MPa)  17940   23 ºC   D790
Tensile Strength (MPa)  162 at break   D638
Compressive Strength (MPa)
at yield or break
 242     D695
Flexural Strength (MPa)
at yield or break
 277     D790
Elongation at break (%)   1     D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted
  4.2     D256A

 Thermal Properties Conditions
Pressure State ASTM
Deflection Temperature (ºC)  249   1.82 MPa   D648

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  1.91   D792

 Processing Properties Conditions
Type ASTM
Melting Temperature (ºC)  270 - 280  Tm, crystalline  
Processing Temperature (ºC)  260 - 277  injection molding  
Molding Pressure (MPa)   69 - 138    
Compression Ratio  3 - 4    
Linear Mold Shrinkage (cm/cm)  0.001 - 0.007   D955

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