eFunda Polymers: Properties of Polyester (thermoplastic) {poly(ethylene-terephthalate), 30% glass, flame-retardant, V-0 1/32}
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Polyester (thermoplastic)		  
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State: poly(ethylene-terephthalate)
Additives: 30% glass
Application: flame-retardant, V-0 1/32
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Flexural Modulus (MPa)  10350   23 ºC   D790
  4278   94 ºC   D790
  2898  149 ºC   D790
Tensile Strength (MPa)  152 at break   D638
Compressive Strength (MPa)
at yield or break		  173     D695
Flexural Strength (MPa)
at yield or break		  221     D790
Elongation at break (%)   3     D638
Hardness  100  Rockwell M   D638
 120  Rockwell R   D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted		   0.8     D256A

 Thermal Properties Conditions
Pressure State ASTM
Coef of Thermal Expansion (10-6/ºC)   2     D696
Deflection Temperature (ºC)  247   0.46 MPa   D648
 224   1.82 MPa   D648

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  1.67   D792
Water Absorption (% weight increase)  0.05  after 24 hrs D570
Dielectric Strength (V/mil);
1/8" thick specimen unless noted		   430   D149

 Processing Properties Conditions
Type ASTM
Melting Temperature (ºC)  245 - 255  Tm, crystalline  
Processing Temperature (ºC)  274 - 291  injection molding  
Molding Pressure (MPa)   56 - 125    
Compression Ratio  3    
Linear Mold Shrinkage (cm/cm)  0.002 - 0.009   D955

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Suppliers
Albis Corp. Rosenburg, TX  800-231-5911
DuPont Co., Polymers Wilmington, DE  800-438-7225

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