Saint-Gobain Meldin® 7021 CM Compression Molded Graphite Filled Polyimide

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Saint-Gobain Meldin® 7021 CM Compression Molded Graphite Filled Polyimide
Categories:	Polymer; Thermoset; Polyimide, TS
Material Notes:	Melidin® 7021 CM is a self-lubricating compression molded polyimide that contains 15% graphite filler. Melidin® 7021 has a low coefficient of friction and high heat resistance, and is best for high temperature bearing, seals, thrust washers, and low-wear applications. Specification Qualifications: Satisfies Type II, Class 1P for ASTM D 6456-99: Standard Specification for Finished Parts Made from Polyimide Resin Satisfies Class 2, Form P for SAE AMS 3644G: Polyimide, Molded Rod, Bar and Tube, Plaque, and Formed Parts Satisfies Type II, Class 1P for MIL-R-46198: Resin, Polyimide, Hot Pressed or Pressed and Sintered Information provided by Saint-Gobain Performance Plastics
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Physical Properties	Metric	English	Comments

Density	1.51 g/cc	0.0546 lb/in³	ASTM D792
Water Absorption	0.19 % @Time 86400 sec	0.19 % @Time 24.0 hour	ASTM D570
	0.50 % @Time 173000 sec	0.50 % @Time 48.0 hour	ASTM D570
Deformation	0.10 %	0.10 %	2000 psi load; ASTM D621

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell E	25 - 40	25 - 40	ASTM D785
Tensile Strength	39.3 MPa @Temperature 260 °C	5700 psi @Temperature 500 °F	ASTM D638
	51.7 MPa @Temperature 150 °C	7500 psi @Temperature 302 °F	ASTM D638
	57.2 MPa @Temperature 100 °C	8300 psi @Temperature 212 °F	ASTM D638
	65.5 MPa @Temperature 23.0 °C	9500 psi @Temperature 73.4 °F	ASTM D638
Elongation at Break	3.2 % @Temperature 260 °C	3.2 % @Temperature 500 °F	ASTM D638
	4.7 % @Temperature 23.9 °C	4.7 % @Temperature 75.0 °F	ASTM D638
Flexural Strength	59.3 MPa @Temperature 260 °C	8600 psi @Temperature 500 °F	ASTM D790
	109 MPa @Temperature 23.9 °C	15800 psi @Temperature 75.0 °F	ASTM D790
Flexural Modulus	2.40 GPa @Temperature 260 °C	348 ksi @Temperature 500 °F	ASTM D790
	3.60 GPa @Temperature 23.9 °C	522 ksi @Temperature 75.0 °F	ASTM D790
Compressive Yield Strength	29.6 MPa @Strain 1 %	4300 psi @Strain 1 %	ASTM D695
	124 MPa @Strain 10 %	18000 psi @Strain 10 %	ASTM D695
Compressive Modulus	3.10 GPa	450 ksi	ASTM D695

Electrical Properties	Metric	English	Comments
Surface Resistivity per Square	1.00e+8 - 1.00e+9 ohm	1.00e+8 - 1.00e+9 ohm	ASTM D257
Dielectric Strength	11.0 kV/mm	280 kV/in	short time 2 mm thick; ASTM D149

Thermal Properties	Metric	English	Comments
CTE, linear	39.6 µm/m-°C @Temperature 22.8 - 260 °C	22.0 µin/in-°F @Temperature 73.0 - 500 °F	ASTM E831
Thermal Conductivity	0.720 W/m-K	5.00 BTU-in/hr-ft²-°F	ASTM F433
Oxygen Index	100 %	100 %	ASTM D2863

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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PSTGQZ084 / 150622

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