Saint-Gobain Meldin® 7021 Isostatically Molded Graphite Filled Polyimide

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Saint-Gobain Meldin® 7021 Isostatically Molded Graphite Filled Polyimide
Categories:	Polymer; Thermoset; Polyimide, TS
Material Notes:	Melidin® 7021 is a self-lubricating thermosetting 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 1M for ASTM D 6456-99: Standard Specification for Finished Parts Made from Polyimide Resin Satisfies Class 2, Form M for SAE AMS 3644G: Polyimide, Molded Rod, Bar and Tube, Plaque, and Formed Parts Satisfies Type II, Class 1M 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	0.20 % @Time 86400 sec	0.20 % @Time 24.0 hour	ASTM D570

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell E	50	50	ASTM D785
Tensile Strength	37.9 MPa @Temperature 260 °C	5500 psi @Temperature 500 °F	ASTM D638
	65.5 MPa @Temperature 23.0 °C	9500 psi @Temperature 73.4 °F	ASTM D638
Elongation at Break	4.3 % @Temperature 260 °C	4.3 % @Temperature 500 °F	ASTM D638
	4.5 % @Temperature 23.9 °C	4.5 % @Temperature 75.0 °F	ASTM D638
Flexural Strength	108 MPa	15600 psi	ASTM D790
Flexural Modulus	3.90 GPa	566 ksi	ASTM D790
Compressive Yield Strength	26.2 MPa @Strain 1 %	3800 psi @Strain 1 %	ASTM D695
	133 MPa @Strain 10 %	19300 psi @Strain 10 %	ASTM D695
Compressive Modulus	2.30 GPa	334 ksi	ASTM D695

Electrical Properties	Metric	English	Comments
Dielectric Strength	11.0 kV/mm	280 kV/in	ASTM D149

Thermal Properties	Metric	English	Comments
CTE, linear	45.0 µm/m-°C @Temperature 23.9 - 260 °C	25.0 µin/in-°F @Temperature 75.0 - 500 °F	ASTM E831

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PSTGQZ082 / 150620

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