Hytrel® 4056

Alternative and trade names
TPC-ET
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Description

Common features of Hytrel® thermoplastic polyester elastomer include mechanical and physical properties such as exceptional toughness and resilience, high resistance to creep, impact and flex fatigue, flexibility at low temperatures and good retention of properties at elevated temperatures. In addition, it resists many industrial chemicals, oils and solvents. Special grades include heat stabilised, flame retardant, food contact compliant, blow molding and extrusion grades. Concentrates offered include black pigments, UV protection additives, heat stabilisers, and flame retardants.Hytrel® thermoplastic polyester elastomer is plasticiser free.The good melt stability of Hytrel® thermoplastic polyester elastomer normally enables the recycling of properly handled production waste. If recycling is not possible, DuPont recommends, as the preferred option, incineration with energy recovery (-24 kJ/g of base polymer) in appropriately equipped installations.For disposal, local regulations have to be observed.Hytrel® thermoplastic polyester elastomer typically is used in demanding applications in the automotive, fluid power, electrical/electronic, consumer goods, appliance and power tool, sporting goods, furniture, industrial and off-road transportation/equipment industry.Hytrel® 4056 is a low modulus Hytrel® grade with nominal durometer hardness of 40D and with high impact resistance down to -40°C. It contains a non-discoloring stabilizer. It is recommended for extrusion and compounding. Typical applications:Hose and tubing, hose jackets, wire and cable jackets, film and sheeting, beltingand seals, .

This material data has been provided by Matmatch.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

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Properties

General

PropertyTemperatureValueComment

Coefficient of friction

0.6 [-]

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ASTM 1894 | against steel

Density

23.0 °C

1.16 g/cm³

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ISO 1183

Water absorption

23.0 °C

0.6 %

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Sim. to ISO 62 | Immersion 24h

Mechanical

PropertyTemperatureValueComment

Elastic modulus

23.0 °C

0.06 GPa

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ISO 527-1/-2

Elongation

23.0 °C

500 %

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ISO 527-1/-2

Flexural modulus

23.0 °C

0.06 GPa

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ISO 178

Hardness, Shore D

23.0 °C

43 [-]

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max., ISO 7619-1

Poisson's ratio

23.0 °C

0.5 [-]

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Tear strength

23.0 °C

102 kN/m

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ISO 34-1

Tear strength, transverse

23.0 °C

96 kN/m

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ISO 34-1

Tensile strength

23.0 °C

26 MPa

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ISO 527-1/-2

Impact strength, Charpy notched

No Break @ 23,-6,-40°C, ISO 179/1eA

Impact strength, Charpy unnotched

No Break @ 23,-6°C, ISO 179/1eA

Impact strength, Izod unnotched

No Break @ 23,-40°C, ISO180/1A

Thermal

PropertyTemperatureValueComment

Brittleness temperature

-97 °C

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ISO 974

Coefficient of thermal expansion

23.0 °C

1.3E-4 1/K

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ISO 11359-1/-2

Coefficient of thermal expansion, transverse

23.0 °C

1.6E-4 1/K

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ISO 11359-1/-2

Glass transition temperature

-50 °C

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ISO 11357-1/-2 | 18°F/min

Heat deflection temperature, 0.45 MPa

48 °C

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ISO 75-1/-2

Melting point

152 °C

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ISO 11357-1/-3 | 18°F/min

Relative temperature index, electrical

50 °C

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UL 746B | 60mil

Relative temperature index, mechanical impact

50 °C

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UL 746B | 60mil

Relative temperature index, mechanical strength

50 °C

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UL 746B | 60mil

Thermal diffusivity

23.0 °C

0 mm²/s

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Vicat softening temperature

109 °C

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ISO 306 | 90°F, 2 lbf

Flammability

Burning Behav. at 60mil nom. thickn.: HB class, Thickness tested: 1.5 mm, UL recognition: yes -, Burning Behav. at thickness h: HB class, Thickness tested: 0.8 mm, UL recognition: yes -, Oxygen index: 20 %, FMVSS Class: SE -

Electrical

PropertyTemperatureValueComment

Comparative tracking index

23.0 °C

600 V

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IEC 60112

Dielectric constant, 100Hz

23.0 °C

5.2 [-]

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IEC 62631-2-1

Dielectric constant, 1MHz

23.0 °C

4.7 [-]

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IEC 62631-2-1

Dielectric strength

23.0 °C

18 kV/mm

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IEC 60243-1

Dissipation factor, 100Hz

23.0 °C

0.01 [-]

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IEC 62631-2-1

Dissipation factor, 1MHz

23.0 °C

0.05 [-]

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IEC 62631-2-1

Surface resistivity

23.0 °C

2.00E+14 Ω/sq

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IEC 62631-3-2

Volume resistivity

23.0 °C

7.00E+12 Ω·cm

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IEC 62631-3-1

Rheological Properties

PropertyTemperatureValueComment

Melt mass-flow rate

5.6 g/10min

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ISO 1133 | 190°C/2.16kg

Melt volume-flow rate

5 cm³/10min

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ISO 1133

Shrinkage

23.0 °C

0.2 %

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ISO 294-4, 2577

Shrinkage, transverse

23.0 °C

0.4 %

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ISO 294-4, 2577

Technological properties

Property
Processing methods

Drying Recommended: yes, Drying Temperature: 80°C, Drying Time, Dehumidified Dryer: 2-3h, Processing Moisture Content: ≤0.08%, Melt Temperature Optimum: 180°C, Min. melt temperature: 170°C, Max. melt temperature: 190°C, Mold Temperature Optimum: 40°C, Min. mold temperature: 30°C, Max. mold temperature: 40°C