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Hytrel® 4068

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Polymer Name: Thermoplastic Copolyester Elastomer (TPC-ET)
Processing Methods: Film Extrusion, Thermoforming, Casting, Injection Molding, Extrusion
End Uses: Hoses, Cosmetic Packaging, Appliances, Pipes, Cables, Automotive Applications, Corrugated Pipe, Sporting Goods, Thermoforming Applications, Wires, Tubing, Office Automation Equipment, Cast Films
Density: 1110.0 kg/m³
Strain at Break: 300.0 %
Flexural Modulus: 45.0 MPa
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Identification & Functionality

Hytrel® 4068 Features & Benefits

Applications & Uses

Properties

Mechanical Properties
ValueUnitsTest Method / Conditions
Flexural Modulus45MPaISO 178
Tensile Modulus45MPaISO 527-1/-2
Stress (at 5% Strain)2.4MPaISO 527-1/-2
Stress (at 10% Strain)3.2MPaISO 527-1/-2
Abrasion Resistance180mm³ISO 4649
Stress (at 50% Strain)6.7MPaISO 527-1/-2
Stress (at 100% Strain)7.5MPaISO 527-1/-2
Stress (at Break)29MPaISO 527-1/-2
Nominal Strain (at Break)800%ISO 527-1/-2
Strain (at Break)min. 300%ISO 527-1/-2
Tensile Creep Modulus (1000h)21MPaISO 899-1
Charpy Impact Strength (at 23°C)NkJ/m²ISO 179/1eU
Charpy Impact Strength (at -30°C)NkJ/m²ISO 179/1eU
Notched Charpy Impact Strength (at 23°C)NkJ/m²ISO 179/1eA
Notched Charpy Impact Strength (at -30°C)NkJ/m²ISO 179/1eA
Notched Charpy Impact Strength (at -40°C)NkJ/m²ISO 179/1eA
Tensile Notched Impact Strength (at 23°C)145kJ/m²ISO 8256/1
Puncture - Maximum Force (at -30°C)2100NISO 6603-2
Puncture Energy (at -30°C)30JISO 6603-2
Hardness (Shore D, 15s)33-ISO 48-4 / ISO 868
Hardness (Shore D, Maximum)37-ISO 868
Tear Strength (Parallel)100kN/mISO 34-1
Tear Strength (Normal)103kN/mISO 34-1
Typical Properties
ValueUnitsTest Method / Conditions
Resin IdentificationTPC-ET-ISO 1043
Thermal Properties
ValueUnitsTest Method / Conditions
Specific Heat Capacity of Melt2140J/(kg K)-
Melt Temperature (at 10°C/min)193°CISO 11357-1/-3
Glass Transition Temperature (at 10°C/min)-50°CISO 11357-1/-2
Vicat Softening Temperature (at 50°C/H 10N)130°CISO 306
Coefficient of Linear Thermal Expansion (Parallel)230E-6/KISO 11359-1/-2
Coefficient of Linear Thermal Expansion (Normal)230E-6/KISO 11359-1/-2
TGA curveavailable-ISO 11359-1/-2
Effective Thermal Diffusivity5.44e-08m²/s-
Thermal Conductivity of Melt0.16W/(m K)ISO 22007-2
Electrical Properties
ValueUnitsTest Method / Conditions
Electric Strength18kV/mmIEC 60243-1
Relative Permittivity (at 100Hz)4.8-IEC 62631-2-1
Relative Permittivity (at 1MHz)4.7-IEC 62631-2-1
Comparative Tracking Index600-IEC 60112
Flammability
ValueUnitsTest Method / Conditions
FMVSS ClassB-ISO 3795 (FMVSS 302)
Burning Behavior (at 3mm Thickness)UL94 HBclassIEC 60695-11-10
Burning Rate (at 1mm Thickness)max. 80mm/minISO 3795 (FMVSS 302)
Other Properties
ValueUnitsTest Method / Conditions
Humidity Absorption (at 2mm)0.3%Sim. to ISO 62
Water Absorption (at 2mm)0.7%Sim. to ISO 62
Water Absorption (Immersion 24h)0.7%Sim. to ISO 62
Density of Melt1030kg/m³-
Density1110kg/m³ISO 1183
Processing Information (Extrusion)
ValueUnitsTest Method / Conditions
Melt Temperature Range210 - 225°C-
Melt Temperature (Optimum)215°C-
Drying Time (Dehumidified Dryer)2 - 3h-
Drying Temperature90 - 110°C-
Processing Moisture Contentmax. 0.06%-
Processing Information (Injection Molding)
ValueUnitsTest Method / Conditions
Drying Temperature100°C-
Drying Recommendedyes--
Drying Time (Dehumidified Dryer)2 - 3h-
Processing Moisture Contentmax. 0.08%-
Melt Temperature (Optimum)225°C-
Melt Temperature (Minimum)220°C-
Melt Temperature (Maximum)250°C-
Mold Temperature (Optimum)40°C-
Mold Temperature (Minimum)30°C-
Mold Temperature (Maximum)40°C-
VDA Properties
ValueUnitsTest Method / Conditions
Emission of Organic Compounds10µgC/gVDA 277
Odor4classVDA 270
Rheological Properties
ValueUnitsTest Method / Conditions
Melt Volume-Flow Rate (at 220°C, 2.16 kg)8.8cm³/10minISO 1133
Melt Mass Flow Rate (at 220°C, 2.16 kg)8.5g/10minISO 1133
Mold Shrinkage (Parallel)1%ISO 294-4, 2577
Mold Shrinkage (Normal)0.9%ISO 294-4, 2577
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) Probably Resistant
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

Certifications & Compliance

Technical Details & Test Data

Viscosity vs Shear Rate

DuPont Hytrel 4068 Viscosity vs Shear Rate

Shear Stress vs Shear Rate

DuPont Hytrel 4068 Shear Stress vs Shear Rate

Stress vs Strain (TPE)

DuPont Hytrel 4068 Stress vs Strain (TPE)

Stress vs Strain (Isochronous, 23°C)

DuPont Hytrel 4068 Stress vs Strain (Isochronous, 23°C)

Creep Modulus vs Time (23°C)

DuPont Hytrel 4068 Creep Modulus vs Time (23°C)

Stress vs Strain (Isochronous, 40°C)

DuPont Hytrel 4068 Stress vs Strain (Isochronous, 40°C)

Creep Modulus vs Time (40°C)

DuPont Hytrel 4068 Creep Modulus vs Time (40°C)

Specific Volume Temperature (pvT)

DuPont Hytrel 4068 Specific Volume Temperature (pvT)

Packaging & Availability

Regional Availability

Hytrel® 4068
DuPont