Phenolfab® Phenolic Grade C, CE, L, LE
B.I.R.S. Machine & Supply distributor of Phenolfab® sheet, rod & tube materials. Phenolfab® phenolic consist of Phenolic Grade C, Phenolic Grade CE, Phenolic Grade L and Phenolic Grade LE.
Phenolfab® NEMA grades C and CE Canvas Cotton-Cloth Reinforced Phenolic. C and CE
are natural color typically light tan to brown. Nema Grades C and CE grades are composed
of a continuous cotton woven cloth impregnated with a phenolic resin binder. Phenolics are
the oldest, most-known general purpose themoset resins. They are among the lowest in
cost and easiest to process. Canvas Phenolics may be adequate for a fair percentage of
electrical applications, but are not generally recommended for primaryelectrical insulation.
Phenolfab® NEMA grades C and CE Canvas are not equivalent to epoxies in resistance to moisture, humidity, dimensional stability, shrinkage, and retention of electrical properties in extreme environments. These grades contain a medium weave canvas and are known primarily for their mechanical properties.
Nema Phenolic Grade C certifies to Mil-I-24768/16 FBM
Nema Phenolic grade CE certifies to Mil-I-24768/14 FBG
Phenolfab® NEMA grades L and LE Linen Cotton-Cloth Reinforced Phenolic - natural color
is typically light tan to brown. This grade is composed of a continuous cotton woven cloth
impregnated with phenolic resin binder. This L grades contains fine woven linen and, like
the canvas phenolic. L Grades are known for their mechanical properties. The finer weave
allows for machining more intricate details than canvas grade, such as gear teeth. These
grades are not recommended for primary electrical insulation, but grade LE exhibits
superior moisture resistance to grades L, C and CE, and thus is an adequate insulator for a number of applications.
Nema Phenolic Grade L (Linen) certifies to Mil-I-24768/15 FBI
Nema Phenolic Grade LE (Linen) certifies to Mil-I-24768/13 FBE