Hytrel® 8238HS NCB010

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® 8238 is the highest modulus grade, with nominal hardness of 82D. It contains non-discoloring stabilizer. It can be processed by many conventional thermoplastic processing techniques like injection molding and extrusion.Typical applications: Cubing, wire and cable, gears, sprockets, electrical connectors and oil field parts.

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.

Ashby charts

Properties

Mechanical

PropertyTemperatureValueComment

Elastic modulus

23.0 °C

1.05 GPa

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ISO 527-1/-2

Elongation

23.0 °C

250 %

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ISO 527-1/-2

Elongation at yield

23.0 °C

19 %

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ISO 527-1/-2

Flexural modulus

23.0 °C

1.04 GPa

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ISO 178

Hardness, Shore D

23.0 °C

71 [-]

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max., ISO 7619-1

Impact strength, Charpy notched

-40.0 °C

3.5 kJ/m²

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ISO 179/1eA

23.0 °C

5.5 kJ/m²

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ISO 179/1eA

Poisson's ratio

23.0 °C

0.45 [-]

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Tensile strength

23.0 °C

49 MPa

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ISO 527-1/-2

Yield strength

23.0 °C

38 MPa

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ISO 527-1/-2

Rheological Properties

PropertyTemperatureValueComment

Shrinkage

23.0 °C

1.4 %

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ISO 294-4, 2577

Shrinkage, transverse

23.0 °C

1.4 %

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ISO 294-4, 2577

Technological properties

Property
Processing methods

Drying Recommended: yes, Drying Temperature: 110°C, Drying Time, Dehumidified Dryer: 2-3h, Processing Moisture Content: ≤0.08%, Melt Temperature Optimum: 250°C, Min. melt temperature: 245°C, Max. melt temperature: 260°C, Mold Temperature Optimum: 45°C, Min. mold temperature: 45°C, Max. mold temperature: 55°C, Hold pressure range: ≥70MPa