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Hytrel® HTR8724 BK320

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Polymer Name: Thermoplastic Copolyester Elastomer (TPC-ET)
Processing Methods: Blow Molding, Extrusion
End Uses: Appliances, Automotive Applications, Power/Other Tools, Automotive Bumpers, Suspension Jounce Bumpers, Automotive Suspension, Industrial Applications, Furniture, Sporting Goods, Suspension Strut Stoppers, Electrical/Electronic Applications, Shock Absorbers, Suspension Rebound Bumpers
Density: 1160.0 kg/m³
Strain at Break: 300.0 %
Flexural Modulus: 110.0 MPa
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Identification & Functionality

Hytrel® HTR8724 BK320 Features & Benefits

Applications & Uses

Properties

Physical Form
Part Marking Code
>TPC-ET<
Resin ID
TPC-ET
Physical Properties
ValueUnitsTest Method / Conditions
Moulding Shrinkage - Parallel1.9%ISO 294-4, 2577
Moulding Shrinkage - Normal1.7%ISO 294-4, 2577
Melt Mass-Flow Rate - MFR (230°C/10 kg)9.0g/10minISO 1133
Mechanical Properties
ValueUnitsTest Method / Conditions
Charpy Notched Impact Strength (23°C)NkJ/m²ISO 179/1eA
Charpy Notched Impact Strength (-30°C)120PkJ/m²ISO 179/1eA
Poisson's Ratio0.49--
Tensile Modulus110.0MPaISO 527-1/-2
Flexural Modulus110.0MPaISO 178
Charpy Notched Impact Strength (40°C)150PkJ/m²ISO 179/1eA
Izod Notched Impact Strength (-40°C)95PkJ/m²ISO 180/1A
Brittleness Temperature-70.0°CISO 974
Thermal Properties
ValueUnitsTest Method / Conditions
Melting Temperature (10°C/Min)206.0°CISO 11357-1/-3
Vicat Softening Temperature (50°C/H, 10N)173.0°CISO 306
Coefficient of Linear Thermal Expanison - Parallel220.0E-6/KISO 11359-1/-2
Coefficient of Linear Thermal Expansion - Normal190.0E-6/KISO 11359-1/-2
Coefficient of Linear Thermal Expansion - Parallel (-40-23°C)100.0E-6/KISO 11359-1/-2
Coefficient of Linear Thermal Expanison - Normal (55-160°C)230.0E-6/KISO 11359-1/-2
Coefficient of Linear Thermal Expansion - Parallel (-40-23°C)190.0E-6/KISO 11359-1/-2
Coefficient of Linear Thermal Expansion - Parallel (55-160°C)250.0E-6/KISO 11359-1/-2
Mechanical Properties Elastomers
ValueUnitsTest Method / Conditions
Hardness (15s)44Shore DISO 7619-1
Stress at Break30.0MPaISO 527-1/-2
Stress at 5% Strain5.0MPaISO 527-1/-2
Stress at 10% Strain8.0MPaISO 527-1/-2
Stress at 50% Strain14.0MPaISO 527-1/-2
Stress at 100% Strain18.0MPaISO 527-1/-2
Stress at 300% Strain29.0MPaISO 527-1/-2
Nominal Strain at Break430.0%ISO 527-1/-2
Tear Strength - Normal160.0kN/mISO 34-1
Hardness (15 sec)44Shore DISO 7619-1
Hardnessmax. 54Shore DISO 7619-1
Strain at Breakmin. 300%ISO 527-1/-2
Flammability
ValueUnitsTest Method / Conditions
FMVSS ClassB-ISO 3795 (FMVSS 302)
Burning Rate (1 mm, Thickness)max. 80mm/minISO 3795 (FMVSS 302)
Other Properties
ValueUnitsTest Method / Conditions
Water Absorption (2 mm)0.5%Sim. to ISO 62
Density1160.0kg/m³ISO 1183
Processing Information (Extrusion)
ValueUnitsTest Method / Conditions
Melt Temperature Range225 - 235°C-
Drying Time (Dehumidified Dryer)2 .0 - 3h-
Processing Moisture Content≤ 0.06%-
Drying Temperature≤ 100°C-
Melt Temperature Optimum230.0°C-
Processing Information (Injection Molding)
ValueUnitsTest Method / Conditions
Drying Temperature100.0°C-
Mold Temperature Optimum45.0°C-
Drying RecommendedYes--
Drying Time (Dehumidified Dryer)2 .0 - 4h-
Processing Moisture Content≤ 0.08%-
Max. Melt Temperature250.0°C-
Min. Mould Temperature45.0°C-
Max. Mould Temperature55.0°C-
Melt Temperature Optimum235.0°C-
Min. Melt Temperature230.0°C-
Processing Information (Blow Molding)
ValueUnitsTest Method / Conditions
Drying Temperature80 - 100°C-
Drying Time (Dehumidified Dryer)4 .0 - 6h-
Processing Moisture Content≤ 0.02%-
Melt Temperature Optimum245.0°C-
Melt Temperature Range240 - 250°C-

Technical Details & Test Data

Dynamic Tensile Modulus-Temperature

DuPont Hytrel HTR8724 BK320 Dynamic Tensile Modulus-Temperature

Stress-Strain (TPE)

DuPont Hytrel HTR8724 BK320 Stress-Strain  (TPE)

Hytrel® HTR8724 BK320
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