Celanese Hytrel® HTR8936 BK320 TPC-ET

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Celanese Hytrel® HTR8936 BK320 TPC-ET
Categories:	Polymer; Thermoplastic; Elastomer, TPE; Polyester TPE
Material Notes:	54 Shore D, high viscosity thermoplastic polyester elastomer designed for blow molding with superior acidity resistance and heat aging. Former DuPont product acquired by Celanese in 2022.
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Physical Properties	Metric	English	Comments

Density	1.18 g/cc	0.0426 lb/in³	ISO 1183
Melt Density	1.00 g/cc	0.0361 lb/in³
Water Absorption	0.75 % @Time 86400 sec	0.75 % @Time 24.0 hour	Immersion; Sim. to ISO 62
	0.75 % @Thickness 2.00 mm	0.75 % @Thickness 0.0787 in	Sim. to ISO 62
Moisture Absorption	0.250 % @Thickness 2.00 mm	0.250 % @Thickness 0.0787 in	Sim. to ISO 62
Linear Mold Shrinkage, Flow	0.019 cm/cm	0.019 in/in	ISO 294-4, 2577
Linear Mold Shrinkage, Transverse	0.018 cm/cm	0.018 in/in	ISO 294-4, 2577
Melt Flow	3.0 g/10 min @Load 10.0 kg, Temperature 240 °C	3.0 g/10 min @Load 22.0 lb, Temperature 464 °F	ISO 1133

Mechanical Properties	Metric	English	Comments
Hardness, Shore D	50	50	15s; ISO 48-4
Tensile Stress at Strain	11.0 MPa	1600 psi	measured on 1BA specimen pulled at 50mm/min; ISO 527-1/-2 or ISO 37
	7.00 MPa @Strain 5.0 %	1020 psi @Strain 5.0 %	1BA specimen at 50mm/min; ISO 527-1/-2 or ISO 37
	17.0 MPa @Strain 50 %	2470 psi @Strain 50 %	1BA specimen at 50mm/min; ISO 527-1/-2 or ISO 37
Tensile Modulus	0.173 GPa	25.1 ksi	ISO 527-1/-2
Flexural Modulus	0.176 GPa	25.5 ksi	ISO 178
Poissons Ratio	0.48	0.48
Tear Strength	127 kN/m	725 pli	normal; ISO 34-1
	142 kN/m	810 pli	parallel; ISO 34-1

Thermal Properties	Metric	English	Comments
CTE, linear, Parallel to Flow	216 µm/m-°C	120 µin/in-°F	ISO 11359-1/-2
	192 µm/m-°C @Temperature -40.0 - 23.0 °C	107 µin/in-°F @Temperature -40.0 - 73.4 °F	ISO 11359-1/-2
	234 µm/m-°C @Temperature 55.0 - 160 °C	130 µin/in-°F @Temperature 131 - 320 °F	ISO 11359-1/-2
CTE, linear, Transverse to Flow	199 µm/m-°C	111 µin/in-°F	ISO 11359-1/-2
	172 µm/m-°C @Temperature -40.0 - 23.0 °C	95.6 µin/in-°F @Temperature -40.0 - 73.4 °F	ISO 11359-1/-2
	220 µm/m-°C @Temperature 55.0 - 160 °C	122 µin/in-°F @Temperature 131 - 320 °F	ISO 11359-1/-2
Specific Heat Capacity	2.30 J/g-°C	0.550 BTU/lb-°F	Melt
	1.80 J/g-°C @Temperature 20.0 °C	0.430 BTU/lb-°F @Temperature 68.0 °F	Solid
Thermal Conductivity	0.230 W/m-K	1.60 BTU-in/hr-ft²-°F	Melt
	0.240 W/m-K	1.67 BTU-in/hr-ft²-°F	Solid
Melting Point	205 °C	401 °F	10°C/min; ISO 11357-1/-3
Deflection Temperature at 0.46 MPa (66 psi)	64.0 °C	147 °F	ISO 75-1/-2
Deflection Temperature at 1.8 MPa (264 psi)	44.0 °C	111 °F	ISO 75-1/-2
Brittleness Temperature	-70.0 °C	-94.0 °F	ISO 974
Flame Spread	38.0 mm/min @Thickness 1.00 mm	1.50 in/min @Thickness 0.0394 in	ISO 3795 (FMVSS 302)

Processing Properties	Metric	English	Comments
Melt Temperature	230 °C	446 °F	Optimum, Blow Molding
	225 - 240 °C	437 - 464 °F	Range, Blow Molding
Mold Temperature	50.0 °C	122 °F	Optimum, Blow Molding
	30.0 - 70.0 °C	86.0 - 158 °F	Range, Blow Molding
Drying Temperature	90.0 - 100 °C	194 - 212 °F	Blow Molding
Dry Time	5.00 - 6.00 hour	5.00 - 6.00 hour	Blow Molding, Dehumidified Dryer
Moisture Content	<= 0.030 %	<= 0.030 %	Blow Molding

Descriptive Properties
Drying Recommended	yes		Blow Molding
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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PDSX5221rc / 290921

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