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Meldin Supplier

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Saint-Gobain Meldin® 7022 Isostatically Molded Graphite Filled Polyimide
Categories: Polymer; Thermoset; Polyimide, TS

Material Notes: Finished parts and basic shapes made from 40% by weight graphite filled polyimide material for applications requiring a low coefficient of thermal expansion, self lubricating properties, and good dimensional stability and elevated temperatures. Applications include: aerospace sealing rings and other components, valve components, and glass handling components.

Specification Qualifications: ASTM D 6456-99 Standard Specification for Finished Parts Made from Polyimide Resin (Type II Class 2M). SAE AMS 3644G Polyimide, Molded Rod, Bar and Tube, Plaque, and Formed Parts (Class 3 Form M). MIL-R-46198 Resin, Polyimide, Hot Pressed or Pressed and Sintered (Type II Class 2M).

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Physical PropertiesOriginal ValueComments
Specific Gravity 1.67 g/ccASTM D792
Water Absorption 0.17 %24 hrs; ASTM D570
 
Mechanical PropertiesOriginal ValueComments
Hardness, Rockwell E 24ASTM D785
Tensile Strength, Ultimate 51.7 MPaASTM D638
Elongation at Break 3.2 %ASTM D638
Flexural Strength 90.3 MPaASTM D790
Flexural Modulus 4.40 GPaASTM D790
Compressive Strength 4000 psi1% strain; ASTM D695
 6000 psi0.1 % Offset; ASTM D695
 16000 psi10% strain; ASTM D695
Compressive Modulus 409 ksiASTM D695
 
Thermal PropertiesOriginal ValueComments
CTE, linear 2.23 µin/in-°F
@Temperature 23.9 - 260 °C
ASTM E831

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PSTGQZ093 / 88646

Ensinger SPI

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