eFunda Polymers: Properties of Polyester (thermoplastic) {poly(ethylene-terephthalate), 30% glass fiber reinforced}
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Polyester (thermoplastic)
 
List of Suppliers
State: poly(ethylene-terephthalate)
Additives: 30% glass fiber reinforced
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Elastic Modulus (MPa)   8970 - 9936  tensile   D638
Flexural Modulus (MPa)   8280 - 10971   23 ºC   D790
  3588   93 ºC   D790
  2691  149 ºC   D790
Tensile Strength (MPa)  138 - 166 at break   D638
 159 at yield   D638
Compressive Strength (MPa)
at yield or break
 173     D695
Flexural Strength (MPa)
at yield or break
 207 - 248     D790
Elongation at break (%)   2 - 7     D638
Hardness   90 - 100  Rockwell M   D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted
  0.8 - 1.2     D256A

 Thermal Properties Conditions
Pressure State ASTM
Coef of Thermal Expansion (10-6/ºC)   18 - 30     D696
Deflection Temperature (ºC)  243 - 249   0.46 MPa   D648
 210 - 227   1.82 MPa   D648
Thermal Conductivity (W/m-ºC)  0.251 - 0.318     C177

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  1.55 - 1.7   D792
Water Absorption (% weight increase)  0.05  after 24 hrs D570
Dielectric Strength (V/mil);
1/8" thick specimen unless noted
  405 - 650   D149

 Processing Properties Conditions
Type ASTM
Melting Temperature (ºC)  245 - 265  Tm, crystalline  
Processing Temperature (ºC)  266 - 310  injection molding  
Molding Pressure (MPa)   28 - 138    
Compression Ratio  2 - 3    
Linear Mold Shrinkage (cm/cm)  0.002 - 0.009   D955

Suppliers
Albis Corp. Rosenburg, TX  800-231-5911
AlliedSignal, Inc. Morristown, NJ  888-565-9835
ComAlloy International Co. Nashville, TN   
DSM Engineering Plastic Products, Inc. Reading, PA  800-729-0101
DuPont Co., Polymers Wilmington, DE  800-438-7225
Eastman Chemical Co. Kingsport, TN  800-327-8626
EMS-American Grilon, Inc. Sumter, SC   
Ferro Corp. Cleveland, OH   
GE Plastics Pittsfield, MA  800-845-0600
M.A. Industries, Inc. Peachtree City, GA  800-241-8250
MRC Polymers, Inc. Chicago, IL   
RTP Co. Winona, MN  800-433-4787
Ticona Summit, NJ  800-526-4960
Wellman, Inc. Johnsonville, SC   
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