Fundamentals of Materials Science and Engineering: An Integrated Approach, 3e

GTBL042-App-B GTBL042-Callister-v3 September 21, 2007 20:24

820 • Appendix B / Properties of Selected Engineering Materials

Table B.7 (Continued)

Thermal Conductivity

Material W/m-K Btu/ft-h-◦F

Refractory Metals

Molybdenum (commercially pure) 142 82

Tantalum (commercially pure) 54.4 31.4

Tungsten (commercially pure) 155 89.4

Miscellaneous Nonferrous Alloys

Nickel 200 70 40.5

Inconel 625 9.8 5.7

Monel 400 21.8 12.6

Haynes alloy 25 9.8 5.7

Invar 10 5.8

Super invar 10 5.8

Kovar 17 9.8

Chemical lead 35 20.2

Antimonial lead (6%) 29 16.8

Tin (commercially pure) 60.7 35.1

Lead–tin solder (60Sn-40Pb) 50 28.9

Zinc (commercially pure) 108 62

Zirconium, reactor grade 702 22 12.7

GRAPHITE, CERAMICS, AND SEMICONDUCTING MATERIALS

Aluminum oxide

• 99.9% pure 39 22.5


• 96% pure 35 20


• 90% pure 16 9.2
  Concrete 1.25–1.75 0.72–1.0
  Diamond


• Natural 1450–4650 840–2700


• Synthetic 3150 1820
  Gallium arsenide 45.5 26.3
  Glass, borosilicate (Pyrex) 1.4 0.81
  Glass, soda–lime 1.7 1.0
  Glass ceramic (Pyroceram) 3.3 1.9
  Graphite


• Extruded 130–190 75–110


• Isostatically molded 104–130 60–75
  Silica, fused 1.4 0.81
  Silicon 141 82
  Silicon carbide


• Hot pressed 80 46.2


• Sintered 71 41
  Silicon nitride


• Hot pressed 29 17


• Reaction bonded 10 6


• Sintered 33 19.1
  Zirconia, 3 mol% Y 2 O 3 2.0–3.3 1.2–1.9
  POLYMERS
  Elastomers


• Butadiene-acrylonitrile (nitrile) 0.25 0.14


• Styrene-butadiene (SBR) 0.25 0.14


• Silicone 0.23 0.13