... rock wool board PropertiesValueShot content(particle≥0.25mm).%≤10.0Average fiber diameter,µ m≤7.0Density tolerance,%+10.-10Thermal ... conductivity coefficient(average temperatur70°C±52°C),W/(m.k)≤0.039Thermal load contraction temperature(products with density above ... 60kg/m3)°C,≥600Moisture content,%≤0.5Combustion propertynon-combustionOrganic material content,%≤4.0Water repellence ...