eFunda Polymers: Properties of Polyester (thermoplastic) {poly(cyclohexylene-methylene-terephthalate), 30% glass fiber reinforced}
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Polyester (thermoplastic)
 
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State: poly(cyclohexylene-methylene-terephthalate)
Additives: 30% glass fiber reinforced
Material Properties
 Mechanical Properties Conditions
State 1 State 2 ASTM
Flexural Modulus (MPa)   6762   23 ºC   D790
Tensile Strength (MPa)   97 at break   D638
Flexural Strength (MPa)
at yield or break
 157     D790
Elongation at break (%)   3     D638
Hardness  113  Rockwell R   D638
Izod Impact (J/cm of notch)
1/8" thick specimen unless noted
  1.5     D256A

 Thermal Properties Conditions
Pressure State ASTM
Deflection Temperature (ºC)  268   0.46 MPa   D648
 221   1.82 MPa   D648

 Physical & Electrical Properties Conditions
State ASTM
Specific Gravity  1.41   D792

 Processing Properties Conditions
Type ASTM
Melting Temperature (ºC)   92  Tg, amorphous  
Melting Temperature (ºC)  285  Tm, crystalline  
Processing Temperature (ºC)  293 - 310  injection molding  
Molding Pressure (MPa)   55 - 110    
Compression Ratio  2.5 - 3.5    
Linear Mold Shrinkage (cm/cm)  0.003 - 0.005   D955

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