Grades: Shown to the left are examples of GrafMat powders. Where they vary is in the average particle size length: Grade A,E and H5 is smallest at 5 microns while Grades A,E and H50 and A,E and H250 are 50 /250 microns respectively. Each photo shows what 1 ounce of the material looks like as it is poured onto a flat surface. In each photo the bottom base diameter of the cone of material as well as the cone height is approximately 3". Although the photos may be somewhat difficult to detect visible differences in the three grades, it can be noted that the 5 grade is very fine powder consistency while the 50 grade is a coarser consistency. The 250 grade is a semi-coarse consistency having a broad length distribution. The 50 grade tends to exhibit characteristics like a powdery dust much like refined powered sugar; the 5 grade has talc type consistency. GrafMat powders can impart their very high performance attributes to various composite material systems by nature of their small compact physical size and ability to be uniformly dispersed thru out the composite materials. Unlike milled graphite fibers (no binder) which have a relatively very low bulk density (no binder to retain any bundle integrity), these materials allow very high relative loadings of fiber because of their compact nature of the fiber bundle held together with carbonized resin.
Additional details about these unique materials can be found on the downloadable information tab that offers both the product data sheet as well as the MSDS for all grades.
1 dry measuring cup
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