The thermal conductivity of silicon steel can vary depending on the specific composition and processing techniques used. Generally, silicon steel has a thermal conductivity ranging from 15 to 50 W/m·K. This makes it a relatively good conductor of heat compared to other materials. The addition of silicon in the steel composition enhances its electrical resistivity while maintaining good thermal conductivity, making silicon steel suitable for applications where both magnetic and thermal properties are important, such as transformer cores and electric motor laminations.
The thermal conductivity of silicon steel is typically around 15-20 W/m·K.