Standard Test Methods for Rigid Sheet and Plate Materials Used for Electrical Insulation| water absorption, warp, volume resistivity, voltage barriers, twist, tracking resistance, thickness, thermosetting laminate, thermal expansion, terminal boards, tensile strength, surface resistivity, surface resistance, spacers, solvent extractible, Rockwell hardness, rigid sheets, rigid plates, resistivity, printed wiring boards, permittivity, insulation resistance, impact resistance, ignitability, hard rubber, flexural strength, elastic modulus, dissipation factor, compressive strength, burning time, bond strength, ash content, arc resistance, ac breakdown voltage