Hytrel® HTR4275 BK316

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® HTR4275 BK316 is designed for blow molding or processing techniques requiring high melt viscosity. It has nominal hardness of 55D, is pigmented black with fine particle size carbon black, and contains a general purpose stabilizer.Typical applications: Hollow thin wall parts requiring a tough polymer with excellent flexibility and temperature properties such as automotive boots.

Ashby charts

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Properties

General

Density

ρ

1.17 g/cm³ at 23 °C

ISO 1183

Water absorption

cwater

0.5 % at 23 °C

Sim. to ISO 62 | Immersion 24h

Mechanical

Elastic modulus

E

0.16 GPa at 23 °C

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ISO 527-1/-2

Elongation

A

450 % at 23 °C

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ISO 527-1/-2

Flexural modulus

Ebend

0.16 GPa at 23 °C

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ISO 178

Hardness, Shore D

HS D

55 [-] at 23 °C

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max., ISO 7619-1

Impact strength, Charpy notched

Ivnot

30 kJ/m² at -40 °C

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No Break @ 23°C, ISO 179/1eU

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Impact strength, Charpy unnotched Iunnot

No Break @ 23°C, ISO 179/1eU

Poisson's ratio

ν

0.49 [-] at 23 °C

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Tear strength

Rtear

140 kN/m at 23 °C

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ISO 34-1

Tear strength, transverse

Rtear,trans

100 kN/m at 23 °C

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ISO 34-1

Tensile strength

Rm

37 MPa at 23 °C

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ISO 527-1/-2

Thermal

Brittleness temperature

Tbr

-100 °C

ISO 974

Coefficient of thermal expansion

α

1.8E-4 1/K at 23 °C

ISO 11359-1/-2

Coefficient of thermal expansion, transverse

αtrans

1.8E-4 1/K at 23 °C

ISO 11359-1/-2

Flammability

Burning Behav. at 60mil nom. thickn.: HB class, Thickness tested: 1.5 mm, FMVSS Class: B -, Burning rate, Thickness 1 mm: 38 mm/min

Glass transition temperature

Tg

-30 °C

ISO 11357-1/-2 | 18°F/min

Heat deflection temperature, 0.45 MPa

HDT0.45,MPa

57 °C

ISO 75-1/-2

Heat deflection temperature, 1.80 MPa

HDT1.8,MPa

41 °C

ISO 75-1/-2

Melting point

Tm

192 °C

ISO 11357-1/-3 | 18°F/min

Specific heat capacity

cp

2100 J/(kg·K) at 23 °C

of melt

Thermal diffusivity

αdiff

0 mm²/s at 23 °C

Vicat softening temperature

Tsoft

170 °C

ISO 306 | 90°F, 2 lbf

Rheological Properties

Melt mass-flow rate

MFR

6 g/10min

ISO 1133 | 230°C/10kg

Melt volume-flow rate

MVR

6 cm³/10min

ISO 1133

Shrinkage

cshrink

1.7 % at 23 °C

ISO 294-4, 2577

Shrinkage, transverse

cshrink, trans

1.9 % at 23 °C

ISO 294-4, 2577

Technological properties

Filler Type

Fillers

Carbon Black

Processing Tag

Processing methods

Drying Recommended: yes, Drying Temperature: 100°C, Drying Time, Dehumidified Dryer: 2-4h, Processing Moisture Content: ≤0.08%, Melt Temperature Optimum: 240°C, Min. melt temperature: 230°C, Max. melt temperature: 250°C, Mold Temperature Optimum: 45°C, Min. mold temperature: 40°C, Max. mold temperature: 50°C

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.