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

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

826 • Appendix B / Properties of Selected Engineering Materials

Table B.9 (Continued)

Material Electrical Resistivity,-m

Zinc (commercially pure) 62.0× 10 −^7

Zirconium, reactor grade 702 3.97× 10 −^7

GRAPHITE, CERAMICS, AND SEMICONDUCTING MATERIALS

Aluminum oxide

• 99.9% pure > 1013


• 96% pure > 1012


• 90% pure > 1012
  Concrete (dry) 109
  Diamond


• Natural 10–10^14


• Synthetic 1.5× 10 −^2
  Gallium arsenide (intrinsic) 106
  Glass, borosilicate (Pyrex) ∼ 1013
  Glass, soda–lime 1010 –10^11
  Glass ceramic (Pyroceram) 2 × 1014
  Graphite


• Extruded (with grain direction) 7 × 10 −^6 –20× 10 −^6


• Isostatically molded 10 × 10 −^6 –18× 10 −^6
  Silica, fused > 1018
  Silicon (intrinsic) 2500
  Silicon carbide


• Hot pressed 1.0–10^9


• Sintered 1.0–10^9
  Silicon nitride


• Hot isostatic pressed > 1012


• Reaction bonded > 1012


• Sintered > 1012
  Zirconia, 3 mol% Y 2 O 3 1010
  POLYMERS
  Elastomers


• Butadiene-acrylonitrile (nitrile) 3.5× 108


• Styrene-butadiene (SBR) 6 × 1011


• Silicone 1013
  Epoxy 1010 –10^13
  Nylon 6,6 1012 –10^13
  Phenolic 109 –10^10
  Poly(butylene terephthalate) (PBT) 4 × 1014
  Polycarbonate (PC) 2 × 1014
  Polyester (thermoset) 1013
  Polyetheretherketone (PEEK) 6 × 1014
  Polyethylene


• Low density (LDPE) 1015 –5× 1016


• High density (HDPE) 1015 –5× 1016


• Ultrahigh molecular weight (UHMWPE) > 5 × 1014
  Poly(ethylene terephthalate) (PET) 1012
  Poly(methyl methacrylate) (PMMA) > 1012
  Polypropylene (PP) > 1014
  Polystyrene (PS) > 1014
  Polytetrafluoroethylene (PTFE) 1017
  Poly(vinyl chloride) (PVC) > 1014