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This is the free Material Data Center Datasheet of Eastar™ DG021 - Polyester-GF20 - Eastman Chemical Co.

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Processing/Physical Characteristics - Mechanical properties - Thermal properties - Optical properties - Other properties - Processing Recommendation Injection Molding
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Product Texts

Eastar™ copolyester DG021 is a glass-reinforced amorphous copolyester that provides increased modulus and strength versus unreinforced versions. Eastar™ copolyester DG021 contains 20% glass fiber as well as a mold release agent derived from vegetable based sources. Its most outstanding features are excellent chemical resistance, toughness, heat resistance, contact clarity, ease of processing, hydrolytic stability, and increased modulus or stiffness. These features give molded products improved modulus and strength in applications that are exposed to certain chemicals, aggressive cleaners, and disinfectants. Contact clarity is also advantageous for secondary operations such as laser welding.

Processing/Physical CharacteristicsValueUnitTest Standard
ASTM Data
Mold Shrinkage, MD 0.001 mm/mm ASTM D 955
Mechanical propertiesValueUnitTest Standard
ASTM Data
Tensile Modulus 5486 MPa ASTM D 638
Tensile Strength at Yield 100 MPa ASTM D 638
Tensile Strength at Break 96 MPa ASTM D 638
Elongation at Yield 3 % ASTM D 638
Elongation at Break 4 % ASTM D 638
Flexural Modulus 5360 MPa ASTM D 790
Rockwell Hardness R 115 - ASTM D 785
Izod Impact notched, 1/8 in 97 J/m ASTM D 256
Izod Impact unnotched, 1/8 in 946 J/m ASTM D 256
Thermal propertiesValueUnitTest Standard
ASTM Data
DTUL @ 66 psi 81 °C ASTM D 648
DTUL @ 264 psi 77 °C ASTM D 648
Optical propertiesValueUnitTest Standard
ASTM Data
Haze 72 % ASTM D 1003
Light Transmittance 80 % ASTM D 1003
Other propertiesValueUnitTest Standard
Density 1370 kg/m³ ASTM D 792
Processing Recommendation Injection MoldingValueUnitTest Standard
Pre-drying - Temperature 71 °C -
Pre-drying - Time 6 h -
Melt temperature 259 - 271 °C -
Mold temperature 26 - 38 °C -
Characteristics
Processing
Injection Molding
Additives
Release agent
Special Characteristics
Heat stabilized or stable to heat
Features
Amorphous, Weldable, Copolymer
Chemical Resistance
General Chemical Resistance, Hydrolytically Stable
Regional Availability
North America, Europe, Asia Pacific, South and Central America, Near East/Africa
Disclaimer
Copyright Altair Engineering GmbH. Altair Engineering GmbH assumes no liability for the system to be free of errors. The user takes sole responsibility for the use of this data under the exclusion of every liability from Altair Engineering GmbH; this is especially valid for claims of compensation resulting from consequential damages. Altair explicitly points out that any decision about the application of materials must be double checked with the producer of this material. This includes all contents of this system. Copyright laws are applicable for the content of this system.
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