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Thermal Conductivity of Common Metals, Alloys and Materials

This Chart gives typical values of thermal several common commercial metals and alloys.

Values refer to ambient temperature (0 to 25°C).

All values should be regarded as typical, since these properties are dependent on the particular type of alloy, heat treatment, and other factors.

Values for specific allots can vary widely.

Name
Thermal Conductivity
W/cm K
Thermal Conductivity
W/m K
Ingot iron
0.7
AISI-SAE 1020
0.52
Stainless steel type 304
0.15
Cast gray iron
0.47
Hastelloy C
0.12
Inconel
0.15
Aluminum Pure
237
Aluminum alloy 3003, Rolled
1.9
Aluminum alloy 2014, Annealed
1.9
Aluminum alloy 360
9.8
Copper, electrolytic (ETP)
3.9
Yellow brass (high brass)
22.3
Aluminum bronze
0.7
Beryllium
218
Beryllium Copper 25
1.20.8
Cupronickel 30%
0.3
Red brass, 85%
1.6
Brass
109
Antimonial lead (hard lead)
0.35
Solder 50-50
0.5
Magnesium alloy AZ31B
1.0
Lead
35.3
Silver
429
Monel
0.3
Gold
318
Nickel (commercial)
0.9
Cupronickel 55-45 (constantan)
0.2
Titanium (commercial)
1.8
Zinc (commercial)
1.1
Zirconium (commercial)
0.2
Cement
0.29
Epoxy (Silica-Filled)
0.30
Rubber
0.16
Epoxt (unfilled)
0.59
Thermal Grease
0.8 - 3
Thermal Epoxy
1 - 7
Glass
1.1
Soil
1.5
Sandstone
2.4
Diamond
900-2320
Asphalt
0.75
Balsa
0.048
Nickel Chrome Steel
16.4
Corian
1.06
Fiberglass
0.04
Granite
1.65 - 3.9
Styrofoam
0.032
Urethane foam
0.02
Iridium
147
Hardwoods (oak, maple..)
0.16

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References:

  • ASM Metals Reference Book, Second Edition, American Society for Metals, Metals Park, OH, 1983.
  • Lynch, C. T., CRC Practical Handbook of Materials Science, CRC Press, Boca Raton, FL, 1989.
  • Shackelford, J. F., and Alexander, W., CRC Materials Science and Engineering Handbook, CRC Press, Boca Raton, FL, 1991.

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