Hytrel® G4774

About
47 Shore D Standard Performance Polyester Elastomer with Heat Ageing Protection&&

Product Description
SupplierDuPont
GenericTPC-ET
Material StatusCommercial: Active
FeaturesGood heat aging resistance,Heat Stabilized,HB
AvailabilitysAfrica & Middle East ,North America,Latin America,Asia Pacific,Europe
Process MethodsInjection Molding

Technical Data
MECHANICALNominal valueUnitTest method
Shore hardness ISO 868
Shaw’s D48 ISO 868
Shore D, 15 seconds43 ISO 868
Tensile modulus110MPaISO 527-2
tensile strength ISO 527-2
fracture17.0MPaISO 527-2
10% strain7.00MPaISO 527-2
50% strain12.0MPaISO 527-2
Tensile strain
fracture200%ISO 527-2
Nominal tensile fracture strain400%ISO 527-2
Bending modulus111MPaISO 178
shear modulus39.0MPaISO 6721
Poisson’s ratio0.40 ISO 527
abrasion resistance33.0mm³ISO 4649

elastic bodyNominal valueUnitTest method
tear strength ISO 34-1
TD90kN/mISO 34-1
MD100kN/mISO 34-1

IMPACTNominal valueUnitTest method
Charpy Notched Impact Strength ISO 179/1eA
-40 ℃, localized fracture120kJ/m²ISO 179/1eA
-30℃No Break ISO 179/1eA
23℃No Break ISO 179/1eA
Charpy Unnotch Impact strength ISO 179/1eU
-30℃No Break ISO 179/1eU
23℃No Break ISO 179/1eU
Impact strength of cantilever beam notch ISO 180/1A
-40℃No Break ISO 180/1A
23℃No Break ISO 180/1A
Tensile impact strength
23℃260kJ/m²ISO 8256/1

THERMALNominal valueUnitTest method
Embrittlement temperature-66.0ISO 974
Glass transition temperature-45.0ISO 11357-2
Melting temperature208ISO 11357-3
Linear coefficient of thermal expansion
TD1.9E-41/℃ISO 11359-2
MD2.2E-41/℃ISO 11359-2
Effective Thermal Diffusivity5.44E-8m²/s

Electrical performanceNominal valueUnitTest method
Volume resistivity1.0E+14ohms·cmIEC 60093

FLAME CHARACTERISTICSNominal valueUnitTest method
Burning rate
1 mm33mm/minISO 3795
Flame retardant level UL 94
1.50 mmHB UL 94
3.00 mmHB UL 94
Flammability level IEC 60695-11-10, -20
1.5 mmHB IEC 60695-11-10, -20
3.0 mmHB IEC 60695-11-10, -20
FMVSS flame retardant ratingB FMVSS 302

Supplementary informationNominal valueUnitTest method
Emissions of organic compounds18.0µgC/gVDA 277
Odor5.00 VDA 270

PHYSICALNominal valueUnitTest method
Density1.19g/cm³ISO 1183
Melt Flow Rate
230℃,2.16kg11g/10minISO 1133
Melt Volume Rate
230℃,2.16 kg11.0cm³/10minISO 1133
Shrinkage rate ISO 294-4
TD1.2%ISO 294-4
MD1.5%ISO 294-4
Water absorption rate
23℃,24hr2.5%ISO 62
Melt density1.01g/cm³
Specific Heat Capacity of Melt2100J/kg/℃
Thermal Conductivity of Melt0.16W/m/K

Process Conditions
injectionNominal valueUnitTest method
ExtrusionNominal valueUnitTest method
Drying temperature100°C
Drying time – hot air dryer2.0 to 3.0hr
Recommended maximum moisture content0.080%
Processing (melt) temperature235 to 260°C
Melt Temperature, Optimum240°C
Mold temperature45 to 55°C
Mold Temperature, Optimum45°C
Drying Recommendedyes 
Recommended maximum moisture content0.060%
Extrusion Melt Temperature, Optimum230°C

Notes
1. Typical properties: these are not to be construed as specifications.
2. 10°C/min
3. FMVSS 302
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