This section of IEC 61 249 outlines the specifications for properties of bismaleimide/triazine-modified epoxide, or unmodified, woven E-glass reinforced laminate sheets, with defined flammability (vertical burning test) ranging from 0.05 mm to 3.2 mm in thickness. The flammability rating is achieved by utilizing brominated fire retardants that are incorporated as an integral part of the epoxide polymer structure. The glass transition temperature for these materials is set at a minimum of 1 60 °C.
Property requirements for certain items may have multiple performance categories. The desired class for the purchase order must be specified; otherwise, the default material class may be supplied.
