Insulation, heat transfer coefficients stones


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This article is part of a general article on the heat transfer coefficients.

Lambda given in W / mK

andesite 1.1
slate 2.2
basalt 1.6
gneiss 3.5
granite 2.8
Sandstone (silica) 2.3
Calcareous sandstone 1.9
Quartz sandstone 2.6
washing 0.55
marble 3.5
millstone 1.8
Hard stone 1.7
1.4 stone farmhouse
Soft stone 1.1
Stone very hard 2.3
Pierre very tender 0.85
Pumice 0.12
porphyry 3.5
shale 2.2
Silex 2.6
trachyte 1.1


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