Thermal Conductivity Values @ 20C

Metal	k=Wm-1K-1
Aluminium	237
Antimony	18.5
Beryllium	218
Brass	110
Cadmium	92
Cobalt	69
Constantan	22
Copper	398
Gold	315
Iridium	147
Cast Iron	55
Pure Iron	80.3
Wr't Iron	59
Lead	35.2
Magnesium	156
Molybdenum	138
Monel	26
Nickel	90.5
Platinum	73
Silver	427
C.Steel	50
St.Steel	25
Tin	67
Zinc	113
Plastics
Acrylic	0.2
Nylon 6	0.25;
Polythene High Den	0.5
PTFE	0.25
PVC	0.19

Misc.solids	k =Wm-1K-1
Asphalt	1.26
Bitumen	0.17
Br'ze Block	0.15
Brickwork	0.6
Brick-Dense	1.6
Carbon	1.7
Conc-LD	0.2
Conc-MD	0.5
Conc-HD	1.5
Firebrick	1.09
Glass	1.05
Glass -Boro.	1.3
Ice	2.18
Limestone	1.1
Mica	0.75
Cement	1.01
Parafin Wax	0.25
Porcelain	1.05
Sand	0.06
Insulation	k=Wm-1K-1
Balsa	0.048
Straw-Comp	0.09
Cotton Wool	0.029
Polystyrene-Exp'd	0.03
Felt	0.04
Glass Wool	0.04(20o C
Kapok	0.034
Magnesia	0.07
Plywood	0.13
Rock Wool	0.045
Sawdust	0.06
Slag Wool	0.042
Wood	0.13
Sheeps Wool	0.038
Cellulose	0.039

Liquids	k= Wm-1K-1
Benzene	0.16
Carb Tet'ide	0.11
Acetone	0.16
Ether	0.14
Glycerol	0.28
Kerosene	0.15
Mercury	8
Methanol	0.21
Machine Oil	0.15
Water	0.58
Sodium	84
Gases	k= Wm -1K -1
Air	0.024
Ammonia	0.022
Argon	0.016
Carbon Dio	0.015
Carbon Mon	0.023
Helium	0.142
Hydrogen	0.168
Methane	0.030
Nitrogen	0.024
Oxygen	0.024
Water Vap.	0.016