Measure of heat flow rate (W/m²) through a material subjected to unit temperature difference (K) across unit thickness (m).
Unit: W/(m.K)
Symbol: \( \lambda \)
| Case | Value | Source |
|---|---|---|
| Air at 300 K and 1 bar | 0.0263 W/(m.K) |
Thermopedia.com
:
|
| water at 295 K | 0.606 W/(m.K) |
Thermopedia.com
:
|
| Reinforced concrete with 1 to 2% steel | 2.3 W/(m.K) |
Règlementation thermique 2012. Règles Th-U fascicule 2: matériaux
:
|
| plywood with density 600 to 700 kg/m³ | 0.17 W/(m.K) |
Règlementation thermique 2012. Règles Th-U fascicule 2: matériaux
:
|