石膏板EN 520,ASTM C1178和ASTM C1278
EN520ShearstrengthFlexuralstrengthDimensionandtolerancesImpactresistanceWatervapourpermeabilityAirpermeabilityDirectairbornesoundinsulationAcousticabsorptionThermalresistanceRegulatedsubstanceWaterabsorptionHightemperatureDensitySurfacehardnessReactiontofireResistancetofireASTMC1178FlexuralstrengthHumidifieddeflectionCore,endandedgehardnessNailpullresistanceWaterresistanceSurfacewaterabsorptionDimensi***andtolerancesASTMC1278FlexuralstrengthHumidifieddeflectionNailpullresistanceDimensi***andtolerancesFoilbackedfiberreinforcedgypsumpanelsWaterresistanceSurfacewaterabsorptionThicknessswelling)