Bulk Density
Bulk density in calcium silicate refers to the measure of the mass of the material per unit volume when it is in a loose or uncompacted state. It is commonly expressed in kilograms per cubic meter (kg/m³) or pounds per cubic foot (lb/ft³).
Calcium silicate bulk density can vary depending on the specific type and grade of the material, as well as its manufacturing process. Generally, calcium silicate boards have a bulk density ranging from 200 kg/m³ to 1000 kg/m³ (12 lb/ft³ to 62 lb/ft³).
The bulk density of calcium silicate is an important characteristic as it can impact various properties of the material, including its strength, thermal conductivity, and insulation performance. Higher bulk density typically indicates a denser and more compacted material, which can contribute to improved mechanical strength but may have slightly reduced insulation properties. It is essential to consider the appropriate bulk density for the intended application of calcium silicate, as it can affect factors such as load-bearing capacity, installation requirements, and thermal insulation efficiency. Manufacturers typically provide specific bulk density values for their calcium silicate products, which should be considered during product selection and application.

Moisture Content

Flexural strength
Flexural strength, also known as modulus of rupture, is a measure of a material’s ability to withstand bending or flexing without breaking. In the case of calcium silicate, which is a type of ceramic material, flexural strength refers to its resistance to bending forces.
The flexural strength of calcium silicate is an important property that determines its structural integrity and ability to support loads.
Flexural strength is typically determined through a three-point or four-point bending test. In this test, a sample of the calcium silicate material is placed on supports, and a load is applied at the center of the sample. As the load increases, the material bends until it eventually fractures. The maximum load at which the material fractures is measured, and the flexural strength is calculated based on the dimensions of the sample.
The flexural strength of calcium silicate can vary depending on factors such as the composition of the material, manufacturing process, and any additional reinforcing materials present. It is usually expressed in units of force per unit area, such as megapascals (MPa) or pounds per square inch (psi).
Higher flexural strength indicates a greater ability of the calcium silicate material to withstand bending and resist fracture. This property is important in applications where the material is subjected to bending or flexing forces, such as in structural components or load-bearing elements.

Compressive Strength

Heat Resistance
Heat resistance refers to the ability of a material, such as calcium silicate, to withstand high temperatures without undergoing significant changes in its physical or chemical properties. In the case of calcium silicate, heat resistance refers to its ability to maintain its structural integrity and functionality when exposed to elevated temperatures.
Calcium silicate is known for its excellent heat resistance properties, which make it suitable for a wide range of applications in high-temperature environments. It is commonly used as an insulation material, especially in industrial settings where thermal insulation is critical.
The heat resistance of calcium silicate is attributed to its low thermal conductivity and high melting point. These properties allow it to effectively insulate against heat transfer and maintain its structural stability at elevated temperatures.
Calcium silicate can typically withstand temperatures ranging from around 600°C (1112°F) up to 1000°C (1832°F), depending on the specific grade and formulation. At these temperatures, calcium silicate maintains its mechanical strength, insulation properties, and dimensional stability.
In addition to its high-temperature performance, calcium silicate also exhibits good fire resistance. It is classified as a non-combustible material and can provide passive fire protection by limiting the spread of flames and reducing heat transfer in case of fire.
Overall, the heat resistance of calcium silicate makes it a valuable material in applications where thermal insulation, fire protection, and structural stability at high temperatures are required.

Thermal Conductivity
Thermal conductivity refers to the ability of a material to conduct heat. It is a measure of how effectively a material transfers heat through conduction. In the case of calcium silicate, thermal conductivity refers to its ability to conduct heat.
Calcium silicate is known for its low thermal conductivity, which makes it an excellent insulation material. Low thermal conductivity means that calcium silicate is a poor conductor of heat, resulting in reduced heat transfer through the material. This property makes it suitable for applications where thermal insulation is required to minimize heat loss or gain.
The thermal conductivity of calcium silicate can vary depending on factors such as the composition, density, and temperature. However, in general, calcium silicate exhibits a relatively low thermal conductivity compared to other materials like metals or traditional building materials.
The specific thermal conductivity values for calcium silicate can range from around 0.05 to 0.15 W/(m·K) at room temperature. This low thermal conductivity enables calcium silicate to effectively limit heat transfer, making it an ideal choice for insulation in various industrial and construction applications.
By utilizing calcium silicate insulation, heat energy can be retained or blocked, providing better temperature control, energy efficiency, and thermal protection in systems such as furnaces, boilers, piping, and high-temperature equipment.
Overall, the low thermal conductivity of calcium silicate contributes to its effectiveness as an insulation material and allows it to play a crucial role in maintaining thermal comfort and energy efficiency in diverse applications.

Dimensions & Thickness