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Brand Name
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TPEE 4556 DUPONT USA
Hytrel® 
Automotive Applications,Electrical applications
UV resistance,Thermal stability
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Plastic Datasheets

hardnessTest ConditionTest MethodDUPONT USA/4556
Shore hardnessShoreDISO 86845
ShoreD,15SecISO 86842
thermal performanceTest ConditionTest MethodDUPONT USA/4556
Brittle temperatureISO 974-100 °C
Glass transition temperatureISO 11357-2-45.0 °C
Hot deformation temperature0.45MPa,UnannealedISO 75-2/B50.0 °C
1.8MPa,UnannealedISO 75-2/A35.0 °C
Linear coefficient of thermal expansionTD：-40to23°CISO 11359-22.1E-04 cm/cm/°C
MD：--ISO 11359-21.7E-04 cm/cm/°C
MD：-40to23°CISO 11359-22.2E-04 cm/cm/°C
TD：--ISO 11359-21.9E-04 cm/cm/°C
TD：EffectiveThermalDiffusivityISO 11359-25.44E-08 m²/s
Melting temperatureISO 11357-3193 °C
Vicat softening temperature--ISO 306/B5060.0 °C
--ISO 306/A50155 °C
filmTest ConditionTest MethodDUPONT USA/4556
Water vapor permeability23°C,85%RH,25μmDIS15106-1/-2600 g/m²/24hr
mechanical propertiesTest ConditionTest MethodDUPONT USA/4556
Bending modulusISO 17887.0 Mpa
Nominal tensile fracture strainISO 527-2740 %
Tensile modulusISO 527-285.0 Mpa
Tensile strainBreakISO 527-2>300 %
tensile strength50%StrainISO 527-29.80 Mpa
10%StrainISO 527-25.70 Mpa
100%StrainISO 527-211.0 Mpa
300%StrainISO 527-217.0 Mpa
BreakISO 527-234.0 Mpa
Wear resistanceISO 4649130 mm³
Electrical performanceTest ConditionTest MethodDUPONT USA/4556
Compared to the anti leakage trace indexIEC 60112PLC 0
Dielectric strengthIEC 60243-119 KV/mm
Dissipation factor1MHzIEC 602500.030
100HzIEC 602509.5E-03
Relative permittivity100HzIEC 602504.80
1MHzIEC 602504.50
Surface resistivityIEC 600934E+14 ohms
Volume resistivityIEC 600938E+12 ohms·cm
Physical propertiesTest ConditionTest MethodDUPONT USA/4556
densityISO 11831.14 g/cm³
melt mass-flow rate220°C/2.16kgISO 11338.5 g/10min
Melt Volume Flow Rate (MVR)220°C/2.16kgISO 11337.50 cm3/10min
Shrinkage rateMDISO 294-41.1 %
TDISO 294-41.1 %
Water absorption rateEquilibrium,23°C,2.00mm,50%RHISO 620.20 %
23°C,24hrISO 620.60 %
Saturation,23°C,2.00mmISO 620.60 %
impact performanceTest ConditionTest MethodDUPONT USA/4556
Charpy Notched Impact Strength-30°CISO 179/1eANoBreak
-40°CISO 179/1eANoBreak
23°CISO 179/1eANoBreak
Impact strength of cantilever beam gap23°CISO 180/1ANoBreak
-40°CISO 180/1ANoBreak
Impact strength of simply supported beam without notch-30°CISO 179/1eUNoBreak
23°CISO 179/1eUNoBreak
flammabilityTest ConditionTest MethodDUPONT USA/4556
Burning rate1.00mmISO 3795<100 mm/min
Extreme Oxygen IndexISO 4589-220 %
FMVSS flammabilityFMVSS302B
UL flame retardant rating3.0mmIEC 60695-11-10,-20HB
3.0mmUL 94HB
1.5mmIEC 60695-11-10,-20HB
1.5mmUL 94HB
elastomerTest ConditionTest MethodDUPONT USA/4556
tear strength横向FlowISO 34-1120 kN/m
FlowISO 34-1120 kN/m

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