POM Copolymer KOCETAL® UR303

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Technical Data Sheet

physical property Test ConditionTest MethodTest Result
densityASTM D7921.37 g/cm³
melt mass-flow rateASTM D12388.0 g/10min
Shrinkage rateASTM D9551.7 %
Water absorption rateASTM D5700.25 %
hardnessTest ConditionTest MethodTest Result
Rockwell hardnessM-ScaleASTM D78565
flammabilityTest ConditionTest MethodTest Result
UL flame retardant ratingUL 94HB
Mechanical propertiesTest ConditionTest MethodTest Result
tensile strength ASTM D63847.0 MPa
elongationASTM D638100 %
Flexural modulusASTM D7901880 MPa
bending strengthASTM D79068.0 MPa
Impact resistanceTest ConditionTest MethodTest Result
Impact strength of cantilever beam gapASTM D256110 J/m
Electrical performanceTest ConditionTest MethodTest Result
Surface ResistivityASTM D2571E+16 ohms
Volume resistivityASTM D2571E+14 ohms·cm
dielectric strengthASTM D14919 kV/mm
dielectric constantASTM D1503.70
Dissipation FactorASTM D1506E-03
Thermal performanceTest ConditionTest MethodTest Result
Heat distortion temperatureASTM D648A148 °C
Heat distortion temperatureASTM D648A86.0 °C
melting temperatureASTM D1525166 °C
Linear coefficient of thermal expansionASTM D6961.3E-05 cm/cm/°C
IMPORTANT NOTES: Plas.com collected the data in the data sheet from the material manufacturers. Plas.com makes the best effort to improve the accuracy of the data, but has no responsibility for the data. We strongly recommend verifying the validity of the data with the material manufacturers before making a final decision.

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