PHYSICS RESOURCES DATABASE

THERMAL PROPERTIES

THERMAL CONDUCTIVITIES, k

Fourier's Condution Law

dQ/dt = - k A dT/dx

 

MATERIAL

Thermal conductivity k

( W.m-1.K-1 )

Metals

 

Aluminum

210

Brass (yellow)

85

Copper

386

Gold

293

Iron

73

Lead

35

Platinum

70

Silver

406

Steel

~ 46

Other Solids

 

Asbestos

0.16

Brick, common red

0.63

Cardboard

0.21

Cement

0.30

Down (feathers)

0.02

Earth's crust

1.7

Felt

0.036

Glass

Fiberglass

0.8

0.04

Granite

2.1

Ice

2.2

Linen

0.088

Paper

0.13

Rubber, soft

0.14

Sand, dry

0.39

Silk

0.04

Snow, compact

0.21

Soil, dry

0.14

Wood

0.13

Liquids

 

Acetone

0.20

 Benzene

0.16

 Alcohol, ethyl

0.17

Mercury

8.7

Oil, engine

0.15

Vaseline

0.18

Water

0.58

Gases

 

Air

0.026

Carbon dioxide

0.017

Nitrogen

0.026

 Oxygen

0.027

 

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