Emission coefficient tables Reference values with tolerances
Alloy A3003
Oxidised
Roughened
Aluminium
Oxidised
Polished
Brass
Polished
Oxidised
Chromium oxide
Copper
Oxidised
Copperoxide
Inconel
Oxidised
Electropolished
Iron
Oxidised
With rust
Iron, cast
Non-oxidised
Molten mass
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values
0.95
0.80
0.60
0.30
0.90
Metals
Iron, forged
0.20
Matt
0.20
Lead
Rough
0.30
Platinum
0.05
Black
Steel
0.30
Cold rolled
0.50
Ground plate
Polished plate
0.81
Alloy (8% nickel,
18% chromium)
0.72
Galvanised
0.78
Oxidised
Heavily oxidised
Freshly rolled
0.83
Rough, flat surface
0.15
Rusty, red
Sheet, nickel plated
0.75
Sheet, rolled
0.60
Stainless steel
Zinc
0.20
Oxidised
0.25
Set custom
value
0.95
0.80
0.60
0.30
0.90
0.90
Confirmation
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0.90
0.40
0.90
0.80
0.50
0.10
0.35
0.28
0.80
0.88
0.24
0.96
0.69
0.11
0.56
0.45
0.10
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