Celanese Hytrel® HTR237BG BK320 TPC-ET

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Celanese Hytrel® HTR237BG BK320 TPC-ET
Categories:	Polymer; Thermoplastic; Elastomer, TPE; Polyester TPE
Material Notes:	45 Shore D, Lubricated, High Viscosity Polyester Elastomer Developed for Blow Molding Former DuPont product acquired by Celanese in 2022.
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Physical Properties	Metric	English	Comments

Density	1.15 g/cc	0.0415 lb/in³	ISO 1183
Melt Density	0.990 g/cc @Temperature 230 °C	0.0358 lb/in³ @Temperature 446 °F
Melt Flow	0.40 g/10 min @Load 2.16 kg, Temperature 220 °C	0.40 g/10 min @Load 4.76 lb, Temperature 428 °F	ISO 1133
	4.0 g/10 min @Load 10.0 kg, Temperature 220 °C	4.0 g/10 min @Load 22.0 lb, Temperature 428 °F	cm³/10min Volumetric; ISO 1133

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	41	41	15s; ISO 48-4
	<= 45	<= 45	ISO 48-4
Tensile Stress at Strain	7.60 MPa @Strain 10 %	1100 psi @Strain 10 %	ISO 527-1/-2
	12.1 MPa @Strain 50 %	1750 psi @Strain 50 %	ISO 527-1/-2
	15.0 MPa @Strain 100 %	2180 psi @Strain 100 %	ISO 527-1/-2
	26.0 MPa @Strain 300 %	3770 psi @Strain 300 %	ISO 527-1/-2
Flexural Modulus	0.0900 GPa	13.1 ksi	ISO 178
Izod Impact, Notched (ISO)	NB @Temperature -40.0 °C	NB @Temperature -40.0 °F	ISO 180/1A
	NB @Temperature 23.0 °C	NB @Temperature 73.4 °F	ISO 180/1A
Charpy Impact, Notched	11.9 J/cm² @Temperature -40.0 °C	56.6 ft-lb/in² @Temperature -40.0 °F	ISO 179/1eA
	NB @Temperature 23.0 °C	NB @Temperature 73.4 °F	ISO 179/1eA
Tear Strength	117 kN/m	668 pli	parallel; ISO 34-1
	119 kN/m	679 pli	normal; ISO 34-1

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	210 µm/m-°C	117 µin/in-°F	ISO 11359-1/-2
	197 µm/m-°C @Temperature -40.0 - 23.0 °C	109 µin/in-°F @Temperature -40.0 - 73.4 °F	ISO 11359-1/-2
	219 µm/m-°C @Temperature 55.0 - 160 °C	122 µin/in-°F @Temperature 131 - 320 °F	ISO 11359-1/-2
CTE, linear, Transverse to Flow	200 µm/m-°C	111 µin/in-°F	ISO 11359-1/-2
	170 µm/m-°C @Temperature -40.0 - 23.0 °C	94.4 µin/in-°F @Temperature -40.0 - 73.4 °F	ISO 11359-1/-2
	237 µm/m-°C @Temperature 55.0 - 160 °C	132 µin/in-°F @Temperature 131 - 320 °F	ISO 11359-1/-2
Thermal Conductivity	0.250 W/m-K	1.74 BTU-in/hr-ft²-°F	Solid
	0.230 W/m-K @Temperature 225 °C	1.60 BTU-in/hr-ft²-°F @Temperature 437 °F	Melt
Melting Point	204 °C	399 °F	10°C/min; ISO 11357-1/-3
Deflection Temperature at 0.46 MPa (66 psi)	57.0 °C	135 °F	ISO 75-1/-2
Deflection Temperature at 1.8 MPa (264 psi)	41.0 °C	106 °F	ISO 75-1/-2
Brittleness Temperature	-100 °C	-148 °F	ISO 974
Glass Transition Temp, Tg	-45.0 °C	-49.0 °F	10°C/min; ISO 11357-1/-2
Flame Spread	<= 80.0 mm/min @Thickness 1.00 mm	<= 3.15 in/min @Thickness 0.0394 in	ISO 3795 (FMVSS 302)

Processing Properties	Metric	English	Comments
Melt Temperature	225 °C	437 °F	Optimum, Injection
	220 - 250 °C	428 - 482 °F	Range, Injection
Drying Temperature	100 °C	212 °F	Injection
Dry Time	2.00 - 3.00 hour	2.00 - 3.00 hour	Injection, Dehumidified Dryer
	2.00 - 4.00 hour	2.00 - 4.00 hour	Blow Molding, Dehumidified Dryer
Moisture Content	<= 0.020 %	<= 0.020 %	Blow Molding
	<= 0.080 %	<= 0.080 %	Injection

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

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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