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Technical Data Sheet
Eastar™ Polyester EN052

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Product Description
Eastar™ Polyester EN052 is a thermoplastic condensation homopolymer produced by a continuous melt-phase polymerization process followed by a solid-state polymerization process. It has been crystallized.

The GREENGUARD INDOOR AIR QUALITY CERTIFIED® Mark is a registered certification mark used under license through the GREENGUARD Environmental Institute (GEI). GEI is an industry-independent, non-profit organization that oversees the GREENGUARD Certification Program. The GREENGUARD Certification Program is an industry independent, third-party testing program for low-emitting products and materials for indoor environments. For more information about GEI and to obtain printable certificates for Eastman™ Copolyesters, visit Choose Eastman Chemical Company under the Manufacturer category and click search to display a list of our products.

Typical Properties

PropertyaTest MethodbTypical Value, Unitsc
Injection Molded Properties
Specific GravityD 7921.32
Water Absorption, 24 h immersionD 5700.1 %
Mold Shrinkage 
     Parallel to Flow, 3.2-mm (0.125-in.) thicknessD 9550.004 mm/mm (0.004 in./in.)
Tensile Stress @ YieldD 63857 MPa (8300 psi)
Tensile Stress @ BreakD 63826 MPa (3800 psi)
Elongation @ YieldD 6384 %
Flexural ModulusD 7902500 MPa (3.6 x 105 psi)
Flexural Yield StrengthD 79081 MPa (11700 psi)
Rockwell Hardness, R ScaleD 785110
Izod Impact Strength, Notched 
     @ 23°C (73°F)D 25651 J/m (1.0 ft·lbf/in.)
     @ -40°C (-40°F)D 25636 J/m (0.7 ft·lbf/in.)
Impact Strength, Unnotched 
     @ 23°C (73°F)D 4812NB
     @ -40°C (-40°F)D 4812NB
Deflection Temperature 
     @ 0.455 MPa (66 psi)D 64866 °C (151 °F)
     @ 1.82 MPa (264 psi)D 64862 °C (144 °F)
Vicat Softening Temperature 
     @ 1 kg loadD 152579 °C (174 °F)
Dielectric Constant 
     1 kHzD 1503.2
     1 MHzD 1503.0
Dissipation Factor 
     1 kHzD 1500.008
     1 MHzD 1500.02
Arc ResistanceD 495155 sec
Volume ResistivityD 2571016 ohm·cm
Surface ResistivityD 2571016 ohms/square
Dielectric Strength, Short Time, 500 V/sec rate-of-riseD 14915.7 kV/mm (400 V/mil)
Typical Processing Conditions
Drying Temperature 150-160 °C (300-320 °F)
Drying Time 4-6 hrs
Processing Melt Temperature 275-295 °C (530-565 °F)
Mold Temperature 10-30 °C (50-90 °F)

aUnless noted otherwise, all tests are run at 23°C (73°F) and 50% relative humidity.
bUnless noted otherwise, the test method is ASTM.
cUnits are in SI or US customary units.

Properties reported here are typical of average lots. Eastman makes no representation that the material in any particular shipment will conform exactly to the values given.

Eastman and its marketing affiliates shall not be responsible for the use of this information, or of any product, method, or apparatus mentioned, and you must make your own determination of its suitability and completeness for your own use, for the protection of the environment, and for the health and safety of your employees and purchasers of your products. No warranty is made of the merchantability of fitness of any product, and nothing herein waives any of the Seller's conditions of sale.

2/28/2018 11:35:39 AM