L-P-513C, FEDERAL SPECIFICATION: PLASTIC SHEET AND INSULATION SHEET, ELECTRICAL (LAMINATED, THERMOSETTING, PAPER-BASE, PHENOLIC-RESIN) (19-DEC-1968) [SUPERSEDING MIL-P-3115] [S/S by ASTM-D709]

L-P-513C, FEDERAL SPECIFICATION: PLASTIC SHEET AND INSULATION SHEET, ELECTRICAL (LAMINATED, THERMOSETTING, PAPER-BASE, PHENOLIC-RESIN) (19-DEC-1968) [SUPERSEDING MIL-P-3115] [S/S by ASTM-D709]., This specification covers plastic and insulation laminated thermosetting sheet material used primarily for electrical insulating purposes wherein better electrical characteristics are required than can be obtained with phenolic resin cotton base laminates, but with some sacrifice in mechanical strength particularly in regard to impact strength. Laminated thermosetting shoots shall be of the following types, as specified (see 6.1): Type PBE - Insulation sheet (electrical grade); Type PBE-P - Insulation sheet (electrical grade; punching stock); AND Type PBG - Plastic sheet (general purpose grade.