Covestro Texin® RxT70A Thermoplastic Polyurethanes (TPU)

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Covestro Texin® RxT70A Thermoplastic Polyurethanes (TPU)
Categories:	Polymer; Thermoplastic; Polyurethane, TP
Material Notes:	Characterization: Texin RxT70A resin is an aromatic polyether-based thermoplastic polyurethane. It can be processed by injection molding or extrusion. Properties / Applications: Texin RxT70A is characterized by very good hydrolysis, good low temperature flexibility, resiliency and impact strength, high moisture vapor transmission rates and is plasticizer free. Typical medical applications include catheters and catheter balloons, specialty tubing and profiles, connectors, and soft overmolding applications. As with any product, the use of Texin RxT70A resin in a given application must be tested (including but not limited to field testing) in advance by the user to determine suitability. Information provided by Covestro
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Physical Properties	Metric	English	Comments

Specific Gravity	1.07 g/cc	1.07 g/cc	ASTM D792
Linear Mold Shrinkage, Flow	0.0080 cm/cm @Thickness 2.54 mm	0.0080 in/in @Thickness 0.100 in	ASTM D955
Linear Mold Shrinkage, Transverse	0.0080 cm/cm @Thickness 2.54 mm	0.0080 in/in @Thickness 0.100 in	ASTM D955
Melt Flow	32 g/10 min @Load 10.0 kg, Temperature 200 °C	32 g/10 min @Load 22.0 lb, Temperature 392 °F	ASTM D1238

Mechanical Properties	Metric	English	Comments
Hardness, Shore A	70	70	ASTM D2240
Tensile Strength at Break	25.5 MPa	3700 psi	ASTM D412
Tensile Stress at Strain	3.40 MPa @Strain 100 %	493 psi @Strain 100 %	ASTM D412
	5.20 MPa @Strain 300 %	754 psi @Strain 300 %	ASTM D412
Elongation at Break	770 %	770 %	ASTM D412
Flexural Modulus	0.0145 GPa	2.10 ksi	ASTM D790
Tear Strength	60.5 kN/m	345 pli	Die C; ASTM D624
Taber Abrasion, mg/1000 Cycles	7.0 @Load 1.00 kg	7.0 @Load 2.20 lb	[mg] Loss, H-18; ASTM D3489
Compression Set	11 % @Temperature 23.0 °C, Time 79200 sec	11 % @Temperature 73.4 °F, Time 22.0 hour	postcured; ASTM D395-B
	30 % @Temperature 70.0 °C, Time 79200 sec	30 % @Temperature 158 °F, Time 22.0 hour	postcured; ASTM D395-B

Thermal Properties	Metric	English	Comments
Vicat Softening Point	75.0 °C	167 °F	Rate A; ASTM D1525

Optical Properties	Metric	English	Comments
Yellow Index	<= 15 %	<= 15 %	ASTM E313

Processing Properties	Metric	English	Comments
Rear Barrel Temperature	182 - 193 °C	360 - 379 °F	Injection
	182 - 199 °C	360 - 390 °F	Extrusion
Middle Barrel Temperature	182 - 204 °C	360 - 399 °F	Extrusion
	188 - 199 °C	370 - 390 °F	Injection
Front Barrel Temperature	182 - 204 °C	360 - 399 °F	Extrusion
	188 - 199 °C	370 - 390 °F	Injection
Nozzle Temperature	191 - 202 °C	376 - 396 °F	Injection
Die Temperature	188 - 204 °C	370 - 399 °F	Extrusion
Melt Temperature	188 - 199 °C	370 - 390 °F	Injection
	191 - 204 °C	376 - 399 °F	Extrusion
Mold Temperature	16.0 - 38.0 °C	60.8 - 100 °F	Injection
Injection Pressure	41.4 - 103 MPa	6000 - 15000 psi	Injection
Back Pressure	<= 1.38 MPa	<= 200 psi	Injection
Cushion	<= 0.317 cm	<= 0.125 in	Injection

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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PCOVEST0997 / 202780

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