10.2.3 Emissivities for TW2001, TW2101, TW2011, TW2002
TW2001, TW2101,
TW2011
(λ = 1.1...1.7 μm)
TW2002
(λ = 0.78...1.06 μm)
Material [%] [%]
Aluminium, polished 5 15
Aluminium, finished 10 25
Asbestos cement 60 70
Bronze, polished 1 3
Bronze, finished 15 30
Chromium, blank 15 30
Iron, heavily scaled 90 95
Iron, rolling skin 75 90
Iron, molten 15 30
Gold and silver 1 2
Graphite, finished 85 90
Copper, oxidised 70 90
Brass, oxidised (tarnished) 50 70
Nickel 8 20
Porcelain, glazed 50 60
Porcelain, rough 75 85
Soot 90 95
Chamotte 40 50
Slag 80 85
Black body 100 100
Pottery, glazed 85 90
Brick 85 90
zinc 40 60
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