Expanded perlite has unique internal structure, which consists of numerous tiny closed air cells, with exterior irregular surface, thereby features good thermal and acoustic insulation properties. Density: 200 ~ 350 (Kg/m3); Average temperature thermal conductivity (W/m.k): 0.062 ~ 0.076; Compressive Strength (Mpa): >0.5; Bending strength (Mpa): >0.3; Linear shrinkage (): 97; Max. service temperature (C): 650C
