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Technical Data Sheet
Eastar™ Polyester EN052

Applications

Compounders
Point-of-purchase

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.

This product has been GREENGUARD INDOOR AIR QUALITY CERTIFIED®.
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 www.greenguard.org. Choose Eastman Chemical Company under the Manufacturer category and click search to display a list of our products.

Typical Properties

Property^a	Test Method^b	Typical Value, Units^c
Injection Molded Properties
Specific Gravity	D 792	1.32
Water Absorption, 24 h immersion	D 570	0.1 %
Mold Shrinkage
Parallel to Flow, 3.2-mm (0.125-in.) thickness	D 955	0.004 mm/mm (0.004 in./in.)
Tensile Stress @ Yield	D 638	57 MPa (8300 psi)
Tensile Stress @ Break	D 638	26 MPa (3800 psi)
Elongation @ Yield	D 638	4 %
Flexural Modulus	D 790	2500 MPa (3.6 x 10⁵ psi)
Flexural Yield Strength	D 790	81 MPa (11700 psi)
Rockwell Hardness, R Scale	D 785	110
Izod Impact Strength, Notched
@ 23°C (73°F)	D 256	51 J/m (1.0 ft·lbf/in.)
@ -40°C (-40°F)	D 256	36 J/m (0.7 ft·lbf/in.)
Impact Strength, Unnotched
@ 23°C (73°F)	D 4812	NB
@ -40°C (-40°F)	D 4812	NB
Deflection Temperature
@ 0.455 MPa (66 psi)	D 648	66 °C (151 °F)
@ 1.82 MPa (264 psi)	D 648	62 °C (144 °F)
Vicat Softening Temperature
@ 1 kg load	D 1525	79 °C (174 °F)
Dielectric Constant
1 kHz	D 150	3.2
1 MHz	D 150	3.0
Dissipation Factor
1 kHz	D 150	0.008
1 MHz	D 150	0.02
Arc Resistance	D 495	155 sec
Volume Resistivity	D 257	10¹⁶ ohm·cm
Surface Resistivity	D 257	10¹⁶ ohms/square
Dielectric Strength, Short Time, 500 V/sec rate-of-rise	D 149	15.7 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.

Comments
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