kW/(m·K)

kilowatt per meter-kelvin

Thermal conductivityexact by definition

The kilowatt per meter-kelvin is 1000 W/(m·K). Almost nothing reaches it: diamond is about 2 kW/(m·K), the highest of any bulk material at room temperature, and isotopically pure diamond a little more.

1 kW/(m·K) 1,000 W/(m·K)