eFunda Polymers: Properties of Polyester (thermoplastic) {poly(ethylene-terephthalate), 30% PAN carbon fiber, EMI shielding (conductive)}
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Polyester (thermoplastic)		  
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State: poly(ethylene-terephthalate)
Additives: 30% PAN carbon fiber
Application: EMI shielding (conductive)
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Elastic Modulus (MPa)  24840  tensile   D638
Flexural Modulus (MPa)  18630   23 ºC   D790
Tensile Strength (MPa)  173 at break   D638
Flexural Strength (MPa)
at yield or break		  263     D790
Elongation at break (%)   2     D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted		   0.8     D256A

 Thermal Properties Conditions
Pressure State ASTM
Deflection Temperature (ºC)  244   0.46 MPa   D648
 222   1.82 MPa   D648

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  1.42   D792
Water Absorption (% weight increase)  0.05  after 24 hrs D570

 Processing Properties Conditions
Type ASTM
Processing Temperature (ºC)  288 - 310  injection molding  
Linear Mold Shrinkage (cm/cm)  0.001 - 0.002   D955

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Suppliers
ComAlloy International Co. Nashville, TN   
DSM Engineering Plastic Products, Inc. Reading, PA  800-729-0101
Ferro Corp. Cleveland, OH   
RTP Co. Winona, MN  800-433-4787

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