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Hytrel® HTR8341C BK320

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Polymer Name: Thermoplastic Copolyester Elastomer (TPC-ET)
Processing Methods: Film Extrusion, Thermoforming, Blow Molding, Casting, Injection Molding, Sheet, Plaques & Profiles Extrusion, Coating
End Uses: Bellows, Cosmetic Packaging, Automotive Applications, Constant Velocity Joint Boots, Containers, Bottles, Automotive Boots, Automotive Drivetrain, Film, Thermoforming Applications, Tubing, Automotive Bellows
Density: 1140.0 kg/m³
Strain at Break: 300.0 %
Flexural Modulus: 80.0 MPa
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Identification & Functionality

Hytrel® HTR8341C BK320 Features & Benefits

Applications & Uses

Properties

Mechanical Properties
ValueUnitsTest Method / Conditions
Tensile Modulus80MPaISO 527
Flexural Modulus80MPaASTM D790 (ISO 178)
Charpy Impact Strength (23°C)No BreakkJ/m2ISO 179/1eU
Charpy Impact Strength (-30°C)No BreakkJ/m2ISO 179/1eU
Charpy Notched Impact Strength (23°C)No BreakkJ/m2ISO 179/1eA
Charpy Notched Impact Strength (-40°C)N1kJ/m²ISO 179/1eA
Tensile Notched Impact Strength (23°C)300kJ/m²ISO 8256/1
Izod Notched Impact Strength (23°C)No BreakkJ/m2ISO 180/1A
Poisson's Ratio0.49--
Coefficient of Static Friction (Against Steel)0.2-ASTM 1894
Brittleness Temperature-100°CISO 974
Physical Properties
ValueUnitsTest Method / Conditions
Melt Mass Flow Rate - MFR (230°C/10 kg)0.9g/10minISO 1133
Molding Shrinkage - Parallel1.6%ISO 294-4, 2577
Molding Shrinkage - Normal1.5%ISO 294-4, 2577
Thermal Properties
ValueUnitsTest Method / Conditions
Melting Temperature (10°C/min)207°CISO 11357-1/-3
Glass Transition Temperature (10°C/min)-401°CISO 11357-1/-2
Freezing Temperature (10°C/min)167°CISO 11357-1/-2
Temperature of Deflection Under Load(1.8 MPa)42°CISO 75-1/-2
Temperature of Deflection Under Load (0.45 MPa)56°CISO 75-1/-2
Vicat Softening Temperature (50°C/h, 10N)158°CISO 306
Coefficient of Linear Thermal Expansion - Parallel170E-6/KISO 11359-1/-2
Coefficient of Linear Thermal Expansion - Normal200E-6/KISO 11359-1/-2
Coefficient of Linear Thermal Expansion - Normal (-40 - 23°C)240E-6/KISO 11359-1/-2
Coefficient of Linear Thermal Expansion - Parallel (-40 - 23°C)230E-6/KISO 11359-1/-2
Specific Heat Capacity of Melt2100J/(kg K)-
Effective Thermal Diffusivity5.44E-8m²/s-
Thermal Conductivity of Melt0.16W/(m K)-
Mechanical Properties Elastomers
ValueUnitsTest Method / Conditions
Hardness (15s)37Shore DISO 7619-1
Hardnessmax. 40Shore DISO 7619-1
Tear Strength - Parallel110kN/mISO 34-1
Stress at 50% Strain12MPaISO 527-1/-2
Stress at 10% Strain7MPaISO 527-1/-2
Stress at 300% Strain23MPaISO 527-1/-2
Tear Strength - Normal115kN/mISO 34-1
Nominal Strain at Break350%ISO 527-1/-2
Stress at Break28MPaISO 527-1/-2
Stress at 100% Strain13MPaISO 527-1/-2
Strain at Breakmin. 300%ISO 527-1/-2
Electrical Properties
ValueUnitsTest Method / Conditions
Dissipation Factor (100 Hz)300E-4IEC 62631-2-1
Dissipation Factor (1 MHz)95E-4IEC 62631-2-1
Surface Resistivity4.00E+14ohmIEC 62631-3-2
Electric Strength19kV/mmIEC 60243-1
Comparative Tracking Index - CTI600VUL 746
Volume Resistivity8E10ohm.mIEC 62631-3-1
Flammability
ValueUnitsTest Method / Conditions
FMVSS ClassB-ISO 3795 (FMVSS 302)
Burning Rate (1 mm, Thickness)17mm/minISO 3795 (FMVSS 302)
Other Properties
ValueUnitsTest Method / Conditions
Humidity Absorption (2 mm)0.2%Sim. to ISO 62
Water Absorption (2 mm)0.5%Sim. to ISO 62
Density1140kg/m³ISO 1183
Density of Melt990kg/m³-
Processing Information (Injection Molding)
ValueUnitsTest Method / Conditions
Drying Temperature100°C-
Drying RecommendedYes--
Processing Moisture Content≤0.08%-
Drying Time (Dehumidified Dryer)3.0 - 4.0h-
Melt Temperature Optimum240°C-
Min. Melt Temperature230°C-
Max. Melt Temperature250°C-
Mold Temperature Optimum45°C-
Min. Mold Temperature40°C-
Max. Mold Temperature50°C-
Ejection Temperature145°C-
Processing Information (Blow Molding)
ValueUnitsTest Method / Conditions
Processing Moisture Content≤0.02%-
Drying Temperature≤110°C-
Chemical Resistance
Chemical Type Chemical Name Resistance
Acids Acetic Acid (5% by mass) (23°C) Probably Resistant
Acids Chromic Acid solution (40% by mass) (23°C) Not Recommended
Acids Citric Acid solution (10% by mass) (23°C) Probably Resistant
Acids Hydrochloric Acid (36% by mass) (23°C) Not Recommended
Acids Lactic Acid (10% by mass) (23°C) Probably Resistant
Acids Nitric Acid (40% by mass) (23°C) Not Recommended
Acids Sulfuric Acid (38% by mass) (23°C) Not Recommended
Acids Sulfuric Acid (5% by mass) (23°C) Probably Resistant
Alcohols Ethanol (23°C) Probably Resistant
Alcohols Isopropyl alcohol (23°C) Probably Resistant
Alcohols Methanol (23°C) Probably Resistant
Bases Ammonium Hydroxide solution (10% by mass) (23°C) Probably Resistant
Bases Sodium Hydroxide solution (1% by mass) (23°C) Probably Resistant
Bases Sodium Hydroxide solution (35% by mass) (23°C) Probably Resistant
Ethers Diethyl ether (23°C) Not Recommended
Hydrocarbons iso-Octane (23°C) Probably Resistant
Hydrocarbons n-Hexane (23°C) Probably Resistant
Hydrocarbons Toluene (23°C) Probably Resistant
Ketones Acetone (23°C) Not Recommended
Mineral oils Insulating Oil (23°C) Probably Resistant
Mineral oils SAE 10W40 multigrade motor oil (130°C) Not Recommended
Mineral oils SAE 10W40 multigrade motor oil (23°C) Probably Resistant
Mineral oils SAE 80/90 hypoid-gear oil (130°C) Not Recommended
Other 1% nonylphenoxy-polyethyleneoxy ethanol in water (23°C) Probably Resistant
Other 50% Oleic acid + 50% Olive Oil (23°C) Probably Resistant
Other DOT No. 4 Brake fluid (130°C) Not Recommended
Other Ethyl Acetate (23°C) Probably Resistant
Other Ethylene Glycol (50% by mass) in water (108°C) Not Recommended
Other Hydrogen peroxide (23°C) Not Recommended
Other Phenol solution (5% by mass) (23°C) Probably Resistant
Other Water (23°C) Probably Resistant
Other Water (90°C) Not Recommended
Salt solutions Sodium Carbonate solution (2% by mass) (23°C) Probably Resistant
Salt solutions Sodium Carbonate solution (20% by mass) (23°C) Probably Resistant
Salt solutions Sodium Chloride solution (10% by mass) (23°C) Probably Resistant
Salt solutions Sodium Hypochlorite solution (10% by mass) (23°C) Not Recommended
Salt solutions Zinc Chloride solution (50% by mass) (23°C) Probably Resistant
Standard Fuels Diesel fuel (pref. ISO 1817 Liquid F) (>90°C) Not Recommended
Standard Fuels Diesel fuel (pref. ISO 1817 Liquid F) (23°C) Probably Resistant
Standard Fuels Diesel fuel (pref. ISO 1817 Liquid F) (90°C) Probably Resistant
Standard Fuels ISO 1817 Liquid 1 - E5 (60°C) Not Recommended
Standard Fuels ISO 1817 Liquid 2 - M15E4 (60°C) Not Recommended
Standard Fuels ISO 1817 Liquid 3 - M3E7 (60°C) Not Recommended
Standard Fuels ISO 1817 Liquid 4 - M15 (60°C) Not Recommended
Standard Fuels Standard fuel with alcohol (pref. ISO 1817 Liquid 4) (23°C) Probably Resistant
Standard Fuels Standard fuel without alcohol (pref. ISO 1817 Liquid C) (23°C) Probably Resistant

Regulatory & Compliance

OEM Specifications
OEM Standards

Technical Details & Test Data

Viscosity vs Shear Rate

DuPont Hytrel HTR8341C BK320 Viscosity vs Shear Rate

Shear Stress vs Shear Rate

DuPont Hytrel HTR8341C BK320 Shear Stress vs Shear Rate

Dynamic Tensile Modulus vs Temperature

DuPont Hytrel HTR8341C BK320 Dynamic Tensile Modulus vs Temperature

Stress vs Strain (TPE)

DuPont Hytrel HTR8341C BK320 Stress vs Strain (TPE)

Specific Volume Temperature (pvT)

DuPont Hytrel HTR8341C BK320 Specific Volume Temperature (pvT)

Tensile Modulus vs Temperature

DuPont Hytrel HTR8341C BK320 Tensile Modulus vs Temperature

LTHA Stress at Break (2mm)

DuPont Hytrel HTR8341C BK320 LTHA Stress at Break (2mm)

LTHA Strain at Break (2mm)

DuPont Hytrel HTR8341C BK320 LTHA Strain at Break (2mm)

Packaging & Availability

Regional Availability

Hytrel® HTR8341C BK320
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