Hytrel® HTR4275 BK316

About
55 Shore D High Viscosity Polyester Elastomer with Good Heat Ageing Protection Developed for Blow Molding&&

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

Technical Data
MECHANICALNominal valueUnitTest method
Shore hardness ISO 868
Shaw’s D55 ISO 868
Shore D, 15 seconds52 ISO 868
Tensile modulus160MPaISO 527-2
tensile strength ISO 527-2
fracture37.0MPaISO 527-2
5% strain6.70MPaISO 527-2
10% strain10.4MPaISO 527-2
50% strain17.0MPaISO 527-2
100% strain21.0MPaISO 527-2
Tensile strain
fracture> 300%ISO 527-2
Nominal tensile fracture strain450%ISO 527-2
Tensile Creep Modulus(1 hr)140MPaISO 899-1
Tensile creep modulus
1000 hr90.0MPaISO 899-1
Bending modulus160MPaISO 178

elastic bodyNominal valueUnitTest method
tear strength ISO 34-1
TD100kN/mISO 34-1
MD140kN/mISO 34-1

IMPACTNominal valueUnitTest method
Charpy Notched Impact Strength ISO 179/1eA
-40℃30kJ/m²ISO 179/1eA
-30 ℃, localized fracture160kJ/m²ISO 179/1eA
23℃No Break ISO 179/1eA
Charpy Unnotch Impact strength
23℃No Break ISO 179/1eU
Tensile impact strength
23℃410kJ/m²ISO 8256/1

THERMALNominal valueUnitTest method
Hot deformation temperature
1.8 MPa, unannealed41.0ISO 75-2/A
0.45 MPa, unannealed57.0ISO 75-2/B
Embrittlement temperature-100ISO 974
Glass transition temperature-30.0ISO 11357-2
Melting temperature192ISO 11357-3
Linear coefficient of thermal expansion
TD1.9E-41/℃ISO 11359-2
MD1.8E-41/℃ISO 11359-2
Effective Thermal Diffusivity5.44E-8m²/s

FLAME CHARACTERISTICSNominal valueUnitTest method
Burning rate
1 mm38mm/minISO 3795
Flammability level
1.5 mmHB IEC 60695-11-10, -20
FMVSS flame retardant ratingB FMVSS 302

Supplementary informationNominal valueUnitTest method
Odor3.50 VDA 270

PHYSICALNominal valueUnitTest method
Density1.17g/cm³ISO 1183
Melt Flow Rate
230℃,10.0kg6.0g/10minISO 1133
Melt Volume Rate
230℃,10 kg6.00cm³/10minISO 1133
Shrinkage rate ISO 294-4
TD1.9%ISO 294-4
MD1.7%ISO 294-4
Water absorption rate
Saturation, 23 ℃, 2.00 mm0.50%ISO 62
Equilibrium, 23 ℃, 50% RH, 2.00 mm0.20%ISO 62
23℃,24hr0.50%ISO 62
Melt density1.00g/cm³
Specific Heat Capacity of Melt2100J/kg/℃
Thermal Conductivity of Melt0.15W/m/K

Process Conditions
injectionNominal valueUnitTest method
Drying temperature100°C
Drying time – hot air dryer2.0 to 4.0hr
Recommended maximum moisture content0.080%
Processing (melt) temperature230 to 250°C
Melt Temperature, Optimum240°C
Mold temperature40 to 50°C
Mold Temperature, Optimum45°C
Drying Recommendedyes 

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