Gypsum
-
20°C
0.8 ... 0.9
Ice
Covered with
heavy frost
0°C
0.98
smooth
0°C
0.97
Lime
-
normal Temperature
0.3 ... 0.4
Marble
greyish polished
20°C
0.93
Glimmer
Thick layer
normal Temperature
0.72
Porcelain
glazed
20°C
0.92
White, glossy
normal Temperature
0.7 ... 0.75
Rubber
Hard
20°C
0.95
Soft, grey rough
20°C
0.86
Sand
-
normal Temperature
0.6
Shellac
black, matt
75°C ... 150°C
0.91
black, glossy,
applied to tin alloy
20°C
0.82
Lead
grey, oxidized
20°C
0.28
at 200°C oxidized
200°C
0.63
red, powder
100°C
0.93
Lead sulfate,
Powder
normal temperature
0.13 ... 0.22
Quecksilver
er
pure
0°C ... 100°C
0.09 ... 0.12
Molybdenum
-
600°C ... 1000°C
0.08 ... 0.13
Heating wire
700°C ... 2500°C
0.10 ... 0.30
Chrome
wire, pure
50°C
500°C ... 1000°C
0.65
0.71 ... 0.79
wire, oxidized
50°C ... 500°C
0.95 ... 0.98
Nickel
absolutly pure,
polished
100°C
200°C ... 400°C
0.045
0.07 ... 0.09
at 600°C oxidized
200°C ... 600°C
0.37 ... 0.48
wire
200°C ... 1000°C
0.1 ... 0.2
Nickel oxidized
500°C ... 650°C
1000°C ... 1250°C
0.52 ... 0.59
0.75 ... 0.86
Platinum
-
1000°C ... 1500°C
0.14 ... 0.18
Pure, polished
200°C ... 600°C
0.05 ... 0.10
Stripes
900°C ... 1100°C
0.12 ... 0.17
wire
50°C ... 200°C
0.06 ... 0.07
500°C ... 1000°C
0.10 ... 0.16
Silver
Pure, polished
200°C ... 600°C
0.02 ... 0.03
Steel
Alloy (8% Nickel,
18% Chrome)
500°C
0.35
Galvanized
20°C
0.28
-54-
