Unitika U-8400H

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Unitika U-8400H
Categories:	Polymer; Thermoplastic; Polyarylate
Material Notes:	U series resins are polymer alloys that are improved in resistance to oils and chemicals, the shortcoming of amorphous resins. They are transparent and have a greater moisture blocking property than other resins having similar structures. They are also suitable for blow molding. Characteristics: Transparent, resistant to chemicals, especially to oils, alcohols and others Weather Resistance Blended into PET resins for improvement in heat resistance. Information provided by Unitika Ltd.
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Physical Properties	Metric	English	Comments

Density	1.28 g/cc	0.0462 lb/in³	ASTM D792
Water Absorption	0.12 % @Thickness 3.17 mm, Time 86400 sec	0.12 % @Thickness 0.125 in, Time 24.0 hour	ASTM D570
Linear Mold Shrinkage, Flow	0.0080 cm/cm @Thickness 3.00 mm	0.0080 in/in @Thickness 0.118 in

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell R	120	120	ASTM D785
Tensile Strength at Break	88.0 MPa	12800 psi	ASTM D638
Elongation at Break	170 %	170 %	ASTM D638
Flexural Strength	95.0 MPa	13800 psi	ASTM D790
Flexural Modulus	2.50 GPa	363 ksi	ASTM D790
Compressive Strength	80.0 MPa	11600 psi	ASTM D695
Izod Impact, Notched	0.690 J/cm @Thickness 3.17 mm	1.29 ft-lb/in @Thickness 0.125 in	ASTM D256

Electrical Properties	Metric	English	Comments
Volume Resistivity	2.00e+14 ohm-cm	2.00e+14 ohm-cm	ASTM D257
Dielectric Constant	3.0 @Frequency 1e+6 Hz	3.0 @Frequency 1e+6 Hz	ASTM D150
Dielectric Strength	30.0 kV/mm	762 kV/in	ASTM D149
Dissipation Factor	0.010 @Frequency 1e+6 Hz	0.010 @Frequency 1e+6 Hz	ASTM D150
Arc Resistance	120 sec	120 sec	ASTM D495

Thermal Properties	Metric	English	Comments
CTE, linear	64.0 µm/m-°C	35.6 µin/in-°F	ASTM D696
Deflection Temperature at 1.8 MPa (264 psi)	95.0 °C	203 °F	ASTM D648

Processing Properties	Metric	English	Comments
Rear Barrel Temperature	230 - 250 °C	446 - 482 °F
Middle Barrel Temperature	240 - 260 °C	464 - 500 °F
Front Barrel Temperature	250 - 270 °C	482 - 518 °F
Nozzle Temperature	250 - 270 °C	482 - 518 °F
Mold Temperature	50.0 - 70.0 °C	122 - 158 °F	actual surface temp
Drying Temperature	100 °C	212 °F
Dry Time	10.0 - 24.0 hour	10.0 - 24.0 hour
Back Pressure	0.490 - 1.47 MPa	71.1 - 213 psi	gage pressure

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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PUNITIK885 / 177905

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