G-10......
NEMA Grade G-10 material is a continuous filament woven fiberglass sheet bonded with epoxy resin. The material has the ability to maintain excellent mechanical, electrical, and physical properties at elevated temperatures to 130?C. NEMA G-10 is a non-brominated, non-flame retardant grade of glass epoxy laminate.
Please note that much of the industry refers to ?G-10? material when they want a flame retardant, V-0 rated glass epoxy laminate rated at 130?C RTI such as NEMA FR4. Technically, NEMA G-10 is a non-flame retardant, non-brominated version of glass epoxy laminate. If a non-brominated material is required, please specifically address this issue.
I never knew there was such a scientific definition for plastic/polymer/glass epoxy 😄 Go figure! Someone got paid $$$ for ^^^that write up^^^