... .5,5.0,7.5 grade.)4.2 Compression strength grade:3.5, 5.0, 7.5Mpa.(3.5, 5.0, 7.5 ... system: 0.11-0.22Kcal/m.h.4.5 Sound insulation: 47.45db.SpecificationBlock:length:600mm: length 600mm ... could be cut, dig, nailed, millinged, drilled.5.5 With good thermostability.Under 600°C, compression strength of ... reaches first grade of fire protection standard.5.6 Good sound insulation. The aac brick has many porous ...