Product properties and applications The main materials of the rock wool board are natural rock and blast furnace slag. It is manufactured with proper binders by high temperature melting, solidifying and cutting. It has characters of light weight, good elasticity and high intensity. It also has functions of heat retention, thermal insulation, sound absorption and fireproofing. It can be widely used for the heat retention and thermal insulation of building walls, ceilings, industrial furnace, oven, heat treatment equipment, tanks, power plant, flue, petrochemical equipment as well as some other tubes. It is easy to construct and install. The energy-saving effect is very good. It has an excellent price-performance ratio. Physical properties and specifications Specification (Length X Width) mm Thickness mm Volume Weight Kg/ m³ Coefficient of Thermal Conductivity W/mK (Average Temperature 70±5°C) Temperature for Shrinkage Under Hot Load °C Organic Matter Content % Incombustibility Shot Content % Diameter of Fiber um 1000X630 1200X600 30 40 50 60 70 80 90-100 110-130 140-160 170-200 60-200 50-200 40-200 40-150 40-150 40-120 40-100 40-80 40-60 40-50 ≤0.044 650 ≤4 Class A ≤10 ≤7 l Special specification can be made according to customers’ requirements. Limit tolerance of rock wool thermal insulation board Length (mm) Width (mm) Thickness (mm) Density % +15, -3 +5, -3 +5, -3 ±10