DuPont Teijin Films Melinex® ST557 Polyester Film, 200 Gauge

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DuPont Teijin Films Melinex® ST557 Polyester Film, 200 Gauge
Categories:	Polymer; Film; Thermoplastic; Polyester, TP; Polyester Film
Material Notes:	Melinex® ST557 is a slightly hazy polyester film with low shrinkage, good flatness, and excellent handling properties. Melinex® ST557 is pretreated with a unique primer on both surfaces for adhesion in special applications Information provided by DuPont.
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Physical Properties	Metric	English	Comments

Thickness	50.8 microns	2.00 mil

Mechanical Properties	Metric	English	Comments
Flex Crack Resistance	>= 20000	>= 20000	Cycles; ASTM D2176
Coefficient of Friction, Static	<= 0.50	<= 0.50	ASTM D1894

Electrical Properties	Metric	English	Comments
Volume Resistivity	1.00e+15 ohm-cm	1.00e+15 ohm-cm	ASTM D257
Surface Resistivity per Square	1.00e+13 ohm	1.00e+13 ohm	ASTM D257
Dielectric Constant	2.9 @Frequency 100 Hz	2.9 @Frequency 100 Hz	ASTM D150
Dielectric Strength	197 kV/mm	5000 kV/in	ASTM D149
Dielectric Breakdown	10000 V	10000 V	ASTM D149

Thermal Properties	Metric	English	Comments
CTE, linear	18.0 µm/m-°C @Temperature 20.0 - 50.0 °C	10.0 µin/in-°F @Temperature 68.0 - 122 °F
Melting Point	265 °C	509 °F
Shrinkage, MD	0.15 % @Temperature 150 °C, Time 1800 sec	0.15 % @Temperature 302 °F, Time 0.500 hour	Unrestrained
Shrinkage, TD	0.15 % @Temperature 150 °C, Time 1800 sec	0.15 % @Temperature 302 °F, Time 0.500 hour	Unrestrained

Optical Properties	Metric	English	Comments
Transmission, Visible	85.5 %	85.5 %	TLT; ASTM D1003

Descriptive Properties
Coefficient of Hygroscopic Expansion	0.000008 IN/IN/% RH		40% - 80% RH

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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PDTZ9248 / 139572

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