6
5
4
3
2
1
2
0.78
T
20
oxidized, heavily
Copper
1
0.88
T
oxidized to black-
ness
Copper
1
0.02
T
50–100
polished
Copper
2
0.03
T
100
polished
Copper
4
0.03
T
27
polished, commer-
cial
Copper
4
0.015
T
22
polished, mechan-
ical
Copper
4
0.008
T
22
pure, carefully
prepared surface
Copper
4
0.07
T
27
scraped
Copper
1
0.84
T
powder
Copper dioxide
1
0.70
T
red, powder
Copper oxide
1
0.89
T
Ebonite
1
0.85
T
80
coarse
Emery
1
0.9
T
20
Enamel
1
0.85–0.95
T
20
lacquer
Enamel
6
0.85
SW
20
hard, untreated
Fiber board
9
0.88
LW
70
masonite
Fiber board
9
0.75
SW
70
masonite
Fiber board
9
0.89
LW
70
particle board
Fiber board
9
0.77
SW
70
particle board
Fiber board
6
0.85
SW
20
porous, untreated
Fiber board
1
0.018
T
130
polished
Gold
1
0.02–0.03
T
200–600
polished, carefully
Gold
2
0.02
T
100
polished, highly
Gold
8
0.849
LLW
20
polished
Granite
8
0.879
LLW
21
rough
Granite
9
0.77–0.87
LW
70
rough, 4 different
samples
Granite
Publ. No. T559733_en-US Rev. a571 – ENGLISH (EN) – November 4, 2011
89
22 – Emissivity tables