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	Original Value	Comments

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

Mechanical Properties	Original Value	Comments
Hardness, Rockwell E	25 - 40	ASTM D785
Tensile Strength	5700 psi @Temperature 260 °C	ASTM D638
	7500 psi @Temperature 150 °C	ASTM D638
	8300 psi @Temperature 100 °C	ASTM D638
	9500 psi @Temperature 23.0 °C	ASTM D638
Elongation at Break	3.2 % @Temperature 260 °C	ASTM D638
	4.7 % @Temperature 23.9 °C	ASTM D638
Flexural Strength	8600 psi @Temperature 260 °C	ASTM D790
	15800 psi @Temperature 23.9 °C	ASTM D790
Flexural Modulus	2.40 GPa @Temperature 260 °C	ASTM D790
	3.60 GPa @Temperature 23.9 °C	ASTM D790
Compressive Yield Strength	4300 psi @Strain 1 %	ASTM D695
	18000 psi @Strain 10 %	ASTM D695
Compressive Modulus	3.10 GPa	ASTM D695

Electrical Properties	Original Value	Comments
Surface Resistivity per Square	1.00e+8 - 1.00e+9 ohm	ASTM D257
Dielectric Strength	280 V/mil	short time 2 mm thick; ASTM D149

Thermal Properties	Original Value	Comments
CTE, linear	22.0 µin/in-°F @Temperature 22.8 - 260 °C	ASTM E831
Thermal Conductivity	5.00 BTU-in/hr-ft²-°F	ASTM F433
Oxygen Index	100 %	ASTM D2863

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PSTGQZ084 / 150622

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