Mechanical Charts - Thermal Conductivity of Materials at 20 degree Celsius

	Thermal Conductivity of Materials at 20^o C

Material	Conductivity	Material	Conductivity

Cast iron	51.9	Bronze (75 - 25)	26.0
Aluminium	204	Lead	34.6
Duralumin	164	Mercury	8.7
Magnesium	171	Nickel	90
Copper	386	Silver	407
Brass (70 - 30)	111	Zinc	112
Constantan	22.7	Tin	64
Tungsten	163	Glasswool	0.04
Glass	0.762	Loose cork	0.036
Bakelite	0.232	Loose earth	0.521
Concrete	0.8 - 1.4	Silk	0.036
Gypsum plaster	0.485	Engine oil	0.145
Common brick	1.32	Freon - 12	0.073
Facing brick	0.32	Water	0.597
Cotton	0.059	Methyl chloride	0.163

Thermal Conductivity of Steel at 20^o C (W/mk)

Steel	Conductivity

Carbon steel	35 - 55
Nickel steel	12 - 50
Chrome steel	30 - 60
Cr - Ni steel	16
Ni - Cr steel	14
Silicon steel	31
Manganese steel	38
Tungsten steel	62


Thermal Conductivity at given Temperature

Material	Temperature	Conductivity

Fire clay	500^o C	1.28
Fire clay	1100^o C	1.4
Asbestos	0^o C	0.151
Asbestos	100^o C	0.192
Wool felt	30^o C	0.0519
Magnesite	204^o C	3.81
Magnesite	1204^o C	1.9
Ice	0^o C	2.22
Diatomaceous earth	204^o C	0.242
Diatomaceous earth	872^o C	0.312