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
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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Properties
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Mechanical Properties
| Value | Units | Test Method / Conditions | |
| Flexural Modulus | 45 | MPa | ISO 178 |
| Tensile Modulus | 45 | MPa | ISO 527-1/-2 |
| Stress (at 5% Strain) | 2.4 | MPa | ISO 527-1/-2 |
| Stress (at 10% Strain) | 3.2 | MPa | ISO 527-1/-2 |
| Abrasion Resistance | 180 | mm³ | ISO 4649 |
| Stress (at 50% Strain) | 6.7 | MPa | ISO 527-1/-2 |
| Stress (at 100% Strain) | 7.5 | MPa | ISO 527-1/-2 |
| Stress (at Break) | 29 | MPa | ISO 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) | 21 | MPa | ISO 899-1 |
| Charpy Impact Strength (at 23°C) | N | kJ/m² | ISO 179/1eU |
| Charpy Impact Strength (at -30°C) | N | kJ/m² | ISO 179/1eU |
| Notched Charpy Impact Strength (at 23°C) | N | kJ/m² | ISO 179/1eA |
| Notched Charpy Impact Strength (at -30°C) | N | kJ/m² | ISO 179/1eA |
| Notched Charpy Impact Strength (at -40°C) | N | kJ/m² | ISO 179/1eA |
| Tensile Notched Impact Strength (at 23°C) | 145 | kJ/m² | ISO 8256/1 |
| Puncture - Maximum Force (at -30°C) | 2100 | N | ISO 6603-2 |
| Puncture Energy (at -30°C) | 30 | J | ISO 6603-2 |
| Hardness (Shore D, 15s) | 33 | - | ISO 48-4 / ISO 868 |
| Hardness (Shore D, Maximum) | 37 | - | ISO 868 |
| Tear Strength (Parallel) | 100 | kN/m | ISO 34-1 |
| Tear Strength (Normal) | 103 | kN/m | ISO 34-1 |
Typical Properties
| Value | Units | Test Method / Conditions | |
| Resin Identification | TPC-ET | - | ISO 1043 |
Thermal Properties
| Value | Units | Test Method / Conditions | |
| Specific Heat Capacity of Melt | 2140 | J/(kg K) | - |
| Melt Temperature (at 10°C/min) | 193 | °C | ISO 11357-1/-3 |
| Glass Transition Temperature (at 10°C/min) | -50 | °C | ISO 11357-1/-2 |
| Vicat Softening Temperature (at 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 |
| TGA curve | available | - | ISO 11359-1/-2 |
| Effective Thermal Diffusivity | 5.44e-08 | m²/s | - |
| Thermal Conductivity of Melt | 0.16 | W/(m K) | ISO 22007-2 |
Electrical Properties
| Value | Units | Test Method / Conditions | |
| Electric Strength | 18 | kV/mm | IEC 60243-1 |
| Relative Permittivity (at 100Hz) | 4.8 | - | IEC 62631-2-1 |
| Relative Permittivity (at 1MHz) | 4.7 | - | IEC 62631-2-1 |
| Comparative Tracking Index | 600 | - | IEC 60112 |
Flammability
| Value | Units | Test Method / Conditions | |
| FMVSS Class | B | - | ISO 3795 (FMVSS 302) |
| Burning Behavior (at 3mm Thickness) | UL94 HB | class | IEC 60695-11-10 |
| Burning Rate (at 1mm Thickness) | max. 80 | mm/min | ISO 3795 (FMVSS 302) |
Other Properties
| Value | Units | Test 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 Melt | 1030 | kg/m³ | - |
| Density | 1110 | kg/m³ | ISO 1183 |
Processing Information (Extrusion)
| Value | Units | Test Method / Conditions | |
| Melt Temperature Range | 210 - 225 | °C | - |
| Melt Temperature (Optimum) | 215 | °C | - |
| Drying Time (Dehumidified Dryer) | 2 - 3 | h | - |
| Drying Temperature | 90 - 110 | °C | - |
| Processing Moisture Content | max. 0.06 | % | - |
Processing Information (Injection Molding)
| Value | Units | Test Method / Conditions | |
| Drying Temperature | 100 | °C | - |
| Drying Recommended | yes | - | - |
| Drying Time (Dehumidified Dryer) | 2 - 3 | h | - |
| Processing Moisture Content | max. 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
| Value | Units | Test Method / Conditions | |
| Emission of Organic Compounds | 10 | µgC/g | VDA 277 |
| Odor | 4 | class | VDA 270 |
Rheological Properties
| Value | Units | Test Method / Conditions | |
| Melt Volume-Flow Rate (at 220°C, 2.16 kg) | 8.8 | cm³/10min | ISO 1133 |
| Melt Mass Flow Rate (at 220°C, 2.16 kg) | 8.5 | g/10min | ISO 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
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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)
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Hytrel® 4068
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