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HomeMeldin® 7022 Polyimide (40% Graphite-Filled)


Meldin® 7022 Polyimide (40% Graphite-Filled)
Meldin® 7022 polyimide with 40% by weight graphite filler (compare to Vespel® SP-22)
This grade of Meldin is similar to the Meldin 7021 for wear and friction, but it has the best overall dimensional stability (thermally) of all Meldin grades. Meldin 7022 also has the lowest coefficient of thermal expansion – due to the relatively high graphite filler content.

Meldin 7000¡ series polyimides are formed using high-pressure mold presses, automatic resin-feeding systems, and computer-controlled hydraulics. Complex Meldin shapes can be molded, reducing the need for secondary machining operations. The Meldin 7000¡ series features operational temperatures of 600ºF for continuous operation and 900ºF for intermittent exposure, and tight tolerances of ±0.001 in. on both ODs and IDs.

Features of Meldin® 7022 Polyimide:
Excellent dimensional stability
Extremely low coefficient of thermal expansion
Meldin 7022 is an excellent replacement for Vespel® SP-22 from DuPont (compare and save)
Stocked in 12" x 12" plates (44% more material than a 10" x 10" plate)
Meldin® is a registered tradename of Saint Gobain
Vespel® is a registered tradename of DuPont
   (MELDIN 7022) Meldin® 7022 Polyimide (40% Graphite-Filled)

Links:
Meldin 7022 ISO Rods Data
Meldin 7000 Series Overview
Meldin 7000 Design Guide
Meldin Machining Guidelines

Other Grades of Meldin
Meldin 7001
Meldin 7021
Meldin 7211
Meldin 7003

Specifications - Approvals:
ASTM D6456-99 Type 2, Class 2
AMS3644 Class 3
Mil-R-46198 Type 2, Class 2
Honeywell MCS5016 Ty. 2, Cl. 2
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