Grades: Shown to the left are examples of GrafMat powders. Where they vary is in the average particle size length: Grade A and H20 is smallest at 20 microns while Grades A and H50 and A and H280 are 50 /280 microns respectively. GrafMat offers a cost effective solution costing as little as $5.00 lb with volume production orders. The center photo shows what 1 ounce of the material looks like as it is poured onto a flat surface.In this photo, the bottom base diameter of the cone of material as well as the cone height is approximately 3". The 280 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 20 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 being held together with carbonized resin.
1 dry measuring cup
GrafMat is available with a tightly bonded, void free Nickel coating. Nickel is added to standard GrafMat by weight, evenly coating each particle with additions ranging from 5% to 100%. The standard offering having 60% addition by weight. Designed to offer EMI / RFI engineers and compounders a high performance additive. This material offers the same ease of processing as standard grades of GrafMat while offering high conductivity attributes of nickel.
Additional information for all grades of GrafMat including MSDS and Product Data Sheets are offered in printable format on the Downloadable Information Tab on the left side of each page.