May 30, 2017 · FR-4 glass epoxy composite laminate G10 material, commonly referred to as Micarta*, garolite or Bakelite*, is a thermoset fiberglass composite manufactured from glass filament cloth with a di-functional or tri-functional epoxy binder. It is often used in applications that require dimensional stability,...

G-10 is stronger than the other glass-epoxy laminate G-11, but is not as good of an insulator and can’t handle quite as high of temperatures. Because of it’s strength, G-10 is difficult to machine and may require special equipment. G-10/FR-4 is available in sheet, rod, and tube. FR-4 is a fire retardant grade of G-10.