Thermal conductivity of magnesia brick

　　The thermal conductivity of magnesia brick can vary depending on factors such as the composition, density, porosity, and temperature. Generally, magnesia bricks have relatively low thermal conductivity due to the insulating properties of magnesia (magnesium oxide). The typical range for thermal conductivity of magnesia brick is around 1-2 W/m·K (watts per meter-kelvin).

　　It's important to note that the specific thermal conductivity values may differ based on the specific grade or formulation of magnesia brick, as well as any additives or impurities present. The manufacturer or supplier of the magnesia brick can provide more precise information on the thermal conductivity of their specific product.

　　Additionally, it's worth mentioning that the thermal conductivity of magnesia brick tends to decrease with increasing temperature, as magnesia exhibits a negative temperature coefficient of thermal conductivity. This means that as the temperature rises, the thermal conductivity of the magnesia brick decreases, contributing to its insulation capabilities in high-temperature applications.

　　When using magnesia brick in thermal insulation applications or designing heat transfer systems, it is essential to consider the thermal conductivity along with other parameters to ensure optimal performance and efficiency.