"Thermal conductivity units is W/(m K) in the SI system and Btu/(hr ft °F) in the Imperial system."

Aluminum 205
Phenolic cast resins 0.15
Phenol-formaldehyde moulding compounds 0.13 - 0.25
Stainless Steel 16
Titanium 22
@77F

http://www.engineeringtoolbox.com/thermal-conductivity-d_429.html

Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.