Page 91 - Tribology in Machine Design
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Table 3.3. Typical thermal properties of some solids
Properties at 20 °C Thermal conductivity, k[W/m °C]
a
2
P C P k m /sec
Material kg/m 3 kJ/kg°C W/m C xl O -100°C 0°C 100 °C 200 °C 300 °C 400 °C 600 °C 800 °C 1000 °C 1200°C
Aluminium (pure) 2707 0.896 204 8.418 215 202 206 215 228 249
Steel (C max = 0.5%) 7833 0.465 54 1.474 55 52 48 45 42 35 31 29 31
Tungsten steel 7897 0.452 73 2.026
Copper 8954 0.3831 386 11.234 386 379 369 363 353
Aluminium bronze 8666 0.410 83 2.330 407
Bronze 8666 0.343 26 0.859
Silicon nitride 3200 0.710 30.7 1.35 27 23 20 18
Titanium carbide 6000 0.543 55 1.69 32 28
Graphite 1900 0.71 178 13.2 112 62
Nylon 1140 1.67 0.25 0.013
Polymide 1430 1.13 0.36 0.023
PTFE 2200 1.05 0.24 0.010
Silicon oxide (glass) 2200 0.8 1.25 0.08 1.05 1.25 1.4 1.6 1.8
