The term thermal conductivity is a measure of how well a material conducts heat (W/m K). Heat transfer occurs more rapidly through materials with higher thermal conductivities. Steel, for example, with an approximate thermal conductivity of 50.2 W/m K transfers heat more slowly than aluminum (~205 W/m K). Unlike both aluminum and steel, FRP is an exceptional insulator. It boasts a nominal thermal conductivity of 0.04 W/m K, providing exceptional thermal break advantages.