Celanese Hytrel® HTR8724 BK320 TPC-ET

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Celanese Hytrel® HTR8724 BK320 TPC-ET
Categories:	Polymer; Thermoplastic; Elastomer, TPE; Polyester TPE
Material Notes:	Low/Medium Modulus High Viscosity Polyester Elastomer with Excellent Fatigue Resistance Developed for Extrusion and Blow Molding Former DuPont product acquired by Celanese in 2022.
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Physical Properties	Original Value	Comments

Density	1.16 g/cc	ISO 1183
Water Absorption	0.50 % @Thickness 2.00 mm	Sim. to ISO 62
Linear Mold Shrinkage, Flow	0.019 cm/cm	ISO 294-4, 2577
Linear Mold Shrinkage, Transverse	0.017 cm/cm	ISO 294-4, 2577
Melt Flow	9.0 g/10 min @Load 10.0 kg, Temperature 230 °C	ISO 1133

Mechanical Properties	Original Value	Comments
Hardness, Shore D	44	15s; ISO 48-4
	<= 54	ISO 48-4
Tensile Stress at Strain	5.00 MPa @Strain 5.0 %	1BA specimen at 50mm/min; ISO 527-1/-2
	8.00 MPa @Strain 10 %	ISO 527-1/-2
	14.0 MPa @Strain 50 %	ISO 527-1/-2
	18.0 MPa @Strain 100 %	ISO 527-1/-2
	29.0 MPa @Strain 300 %	ISO 527-1/-2
Tensile Modulus	110 MPa	ISO 527-1/-2
Flexural Modulus	110 MPa	ISO 178
Poissons Ratio	0.49
Charpy Impact, Notched	120 kJ/m² @Temperature -30.0 °C	Partial Break; ISO 179/1eA
	150 kJ/m² @Temperature -40.0 °C	ISO 179/1eA
	NB @Temperature 23.0 °C	ISO 179/1eA
Tear Strength	131 kN/m	normal; ISO 34-1

Thermal Properties	Original Value	Comments
CTE, linear, Parallel to Flow	220 µm/m-°C	ISO 11359-1/-2
	190 µm/m-°C @Temperature -40.0 - 23.0 °C	ISO 11359-1/-2
	250 µm/m-°C @Temperature 55.0 - 160 °C	ISO 11359-1/-2
CTE, linear, Transverse to Flow	190 µm/m-°C	ISO 11359-1/-2
	100 µm/m-°C @Temperature -40.0 - 23.0 °C	ISO 11359-1/-2
	230 µm/m-°C @Temperature 55.0 - 160 °C	ISO 11359-1/-2
Melting Point	206 °C	10°C/min; ISO 11357-1/-3
Brittleness Temperature	-70.0 °C	ISO 974
Glass Transition Temp, Tg	-40.0 °C	10°C/min; ISO 11357-1/-2
Flame Spread	<= 80.0 mm/min @Thickness 1.00 mm	ISO 3795 (FMVSS 302)

Processing Properties	Original Value	Comments
Melt Temperature	230 °C	Optimum, Extrusion
	225 - 235 °C	Range, Extrusion
	235 °C	Optimum, Injection
	230 - 250 °C	Range, Injection
	240 - 250 °C	Range, Blow Molding
	245 °C	Optimum, Blow Molding
Mold Temperature	45.0 °C	Optimum, Injection
	45.0 - 55.0 °C	Injection
Drying Temperature	80.0 - 100 °C	Blow Molding
	100 °C	Injection
Dry Time	2.00 - 3.00 hour	Extrusion, Dehumidified Dryer
	2.00 - 4.00 hour	Injection, Dehumidified Dryer
	4.00 - 6.00 hour	Blow Molding, Dehumidified Dryer
Moisture Content	<= 0.020 %	Blow Molding
	<= 0.060 %	Extrusion
	<= 0.080 %	Injection

Descriptive Properties
Drying Recommended	yes	Injection
FMVSS Class	B	ISO 3795 (FMVSS 302)
Part Marking Code	>TPC-ET<	ISO 11469
Polymer	TPC
Resin Identification	TPC-ET	ISO 1043

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PDSX5217m / 254340

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