Hytrel® 4068 is a low modulus Hytrel® grade with nominal durometer hardness of 40D. It contains non-discoloring stabilizer. It can be processed by many conventional thermoplastic processing techniques like injection molding and extrusion. Typical applications:Molded products, hose and tubing, wire and cable jackets, film and sheeting, belting and seals.
Polymer Name: Thermoplastic Copolyester Elastomer (TPC-ET)
Processing Methods: Film Extrusion, Thermoforming, Casting, Injection Molding, Extrusion, Sheet, Plaques & Profiles Extrusion
End Uses: Hoses, Cosmetic Packaging, Appliances, Pipes, Automotive Applications, Corrugated Pipe, Sporting Goods, Thermoforming Applications, Tubing, Office Automation Equipment, Cast Films, Wire & Cable Applications
Density: 1110.0 kg/m³
Strain at Break: 300.0 %
Flexural Modulus: 45.0 MPa
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Hytrel® 4068
DuPont
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Identification & Functionality
Chemical Family
Polymer Name
Technologies
Hytrel® 4068 Features & Benefits
Applications & Uses
Markets
Applications
Plastics & Elastomers Processing Methods
Properties
Chemical Resistance
Part Marking Code
>TPC-ET<
Resin ID
TPC-ET
Mechanical Properties
Value | Units | Test Method / Conditions | |
Flexural Modulus | 45 | MPa | ISO 178 |
Tensile Creep Modulus (1000 h) | 21 | MPa | ISO 899-1 |
Charpy Impact Strength (23°C) | No Break | kJ/m2 | ISO 179/1eU |
Charpy Impact Strength (-30°C) | No Break | kJ/m2 | ISO 179/1eU |
Charpy Notched Impact Strength (23°C) | No Break | kJ/m2 | ISO 179/1eA |
Charpy Notched Impact Strength (-30°C) | No Break | kJ/m2 | ISO 179/1eA |
Charpy Notched Impact Strength (-40°C) | No Break | kJ/m² | ISO 179/1eA |
Tensile Notched Impact Strength (23°C) | 145 | kJ/m² | ISO 8256/1 |
Puncture - Maximum Force (-30°C) | 2100 | N | ISO 6603-2 |
Puncture Energy (-30°C) | 30 | J | ISO 6603-2 |
Physical Properties
Value | Units | Test Method / Conditions | |
Melt Volume - Flow Rate | 8.8 | cm³/10min | ISO 1133 |
Melt Mass Flow Rate - MFR (190°C/2.16 kg) | 8.5 | g/10 min | ASTM D1238 |
Load | 2.16 | kg | ISO 1133 |
Molding Shrinkage - Parallel | 1.0 | % | ISO 294-4, 2577 |
Molding Shrinkage - Normal | 0.9 | % | ISO 294-4, 2577 |
Temperature | 220 | °C | ISO 1133 |
Thermal Properties
Value | Units | Test Method / Conditions | |
Melting Temperature (10°C/min) | 193 | °C | ISO 11357-1/-3 |
Glass Transition Temperature (10°C/min) | -55 | °C | ISO 11357-1/-2 |
Vicat Softening Temperature (50°C/h, 10N) | 130 | °C | ISO 306 |
Coefficient of Linear Thermal Expansion - Parallel | 230 | E-6/K | ISO 11359-1/-2 |
Coefficient of Linear Thermal Expansion - Normal | 230 | E-6/K | ISO 11359-1/-2 |
Specific Heat Capacity of Melt | 2140 | J/(kg K) | - |
Effective Thermal Diffusivity | 5.44E-8 | m²/s | - |
Thermal Conductivity of Melt | 0.16 | W/(m K) | - |
Mechanical Properties Elastomers
Value | Units | Test Method / Conditions | |
Max. Hardness - Shore D | 37 | - | ISO 7619-1 |
Stress at 5% Strain | 2.4 | MPa | ISO 527-1/-2 |
Abrasion Resistance | 180 | mm³ | ISO 4649 |
Tear Strength - Normal | 103 | kN/m | ISO 34-1 |
Tear Strength - Parallel | 100 | kN/m | ISO 34-1 |
Nominal Strain at Break | 800 | % | ISO 527-1/-2 |
Stress at Break | 29 | MPa | ISO 527-1/-2 |
Stress at 100% Strain | 7.5 | MPa | ISO 527-1/-2 |
Stress at 50% Strain | 6.7 | MPa | ISO 527-1/-2 |
Stress at 10% Strain | 3.2 | MPa | ISO 527-1/-2 |
Tensile Modulus | 45 | MPa | ISO 527-1/-2 |
Hardness - Shore D (15s) | 33 | - | ISO 7619-1 |
Strain at Break | min. 300 | % | ISO 527-1/-2 |
Electrical Properties
Value | Units | Test Method / Conditions | |
Relative Permittivity (100 Hz) | 4.8 | - | IEC 62631-2-1 |
Relative Permittivity (1 MHz) | 4.7 | - | IEC 62631-2-1 |
Electric Strength | 18 | kV/mm | STN EN 60243-2 |
Comparative Tracking Index - CTI | 600 | V | UL 746 |
Flammability
Value | Units | Test Method / Conditions | |
FMVSS Class | B | - | ISO 3795 (FMVSS 302) |
Burning Rate (1 mm, Thickness) | max. 80 | mm/min | ISO 3795 (FMVSS 302) |
Other Properties
Value | Units | Test Method / Conditions | |
Humidity Absorption (2 mm) | 0.3 | % | Sim. to ISO 62 |
Water Absorption (2 mm) | 0.7 | % | Sim. to ISO 62 |
Water Absorption - Immersion (24 h) | 0.7 | % | Sim. to ISO 62 |
Density of Melt | 1030 | kg/m³ | - |
Density | 1110 | kg/m³ | ISO 1183 |
Processing Information (Extrusion)
Value | Units | Test Method / Conditions | |
Melt Temperature Range | 210 - 225 | °C | - |
Processing Moisture Content | ≤0.06 | % | - |
Drying Time (Dehumidified Dryer) | 2.0 - 3.0 | h | - |
Melt Temperature Optimum | 215 | °C | - |
Drying Temperature | 90 - 110 | °C | - |
Processing Information (Injection Molding)
Value | Units | Test Method / Conditions | |
Drying Temperature | 100 | °C | - |
Drying Recommended | Yes | - | - |
Drying Time (Dehumidified Dryer) | 2.0 - 3.0 | h | - |
Processing Moisture Content | ≤0.08 | % | - |
Melt Temperature Optimum | 225 | °C | - |
Min. Melt Temperature | 220 | °C | - |
Max. Melt Temperature | 250 | °C | - |
Mold Temperature Optimum | 40 | °C | - |
Min. Mold Temperature | 30 | °C | - |
Max. Mold Temperature | 40 | °C | - |
VDA Properties
Value | Units | Test Method / Conditions | |
Emission of Organic Compounds | 10 | µgC/g | VDA 277 |
Odour | 4 | class | VDA 270 |
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 |
Technical Details & Test Data
Viscosity vs Shear Rate
Shear Stress vs Shear Rate
Stress vs Strain (TPE)
Stress vs Strain (Isochronous, 23°C)
Creep Modulus vs Time (23°C)
Stress vs Strain (Isochronous, 40°C)
Creep Modulus vs Time (40°C)
Specific Volume Temperature (pvT)