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Callister - An introduction - 8th edition

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A28 • Appendix B / Properties of Selected Engineering Materials<br />

Table B.9 (Continued)<br />

Material<br />

Zinc (commercially pure)<br />

Zirconium, reactor grade 702<br />

Electrical Resistivity, # m<br />

62.0 10 7<br />

3.97 10 7<br />

GRAPHITE, CERAMICS, AND SEMICONDUCTING MATERIALS<br />

Aluminum oxide<br />

• 99.9% pure 10 13<br />

• 96% pure 10 12<br />

• 90% pure 10 12<br />

Concrete (dry) 10 9<br />

Diamond<br />

• Natural 10–10 14<br />

• Synthetic<br />

1.5 10 2<br />

Gallium arsenide (intrinsic) 10 6<br />

Glass, borosilicate (Pyrex) 10 13<br />

Glass, soda–lime 10 10 –10 11<br />

Glass-ceramic (Pyroceram) 2 10 14<br />

Graphite<br />

• Extruded (with grain direction)<br />

7 10 6 –20 10 6<br />

• Isostatically molded<br />

10 10 6 –18 10 6<br />

Silica, fused 10 18<br />

Silicon (intrinsic) 2500<br />

Silicon carbide<br />

• Hot pressed 1.0–10 9<br />

• Sintered 1.0–10 9<br />

Silicon nitride<br />

• Hot isostatic pressed 10 12<br />

• Reaction bonded 10 12<br />

• Sintered 10 12<br />

Zirconia, 3 mol% Y 2 O 3 10 10<br />

POLYMERS<br />

Elastomers<br />

• Butadiene-acrylonitrile (nitrile) 3.5 10 8<br />

• Styrene-butadiene (SBR) 6 10 11<br />

• Silicone 10 13<br />

Epoxy 10 10 –10 13<br />

Nylon 6,6 10 12 –10 13<br />

Phenolic 10 9 –10 10<br />

Poly(butylene terephthalate) (PBT) 4 10 14<br />

Polycarbonate (PC) 2 10 14<br />

Polyester (thermoset) 10 13<br />

Polyetheretherketone (PEEK) 6 10 14<br />

Polyethylene<br />

• Low density (LDPE) 10 15 –5 10 16<br />

• High density (HDPE) 10 15 –5 10 16<br />

• Ultrahigh molecular weight<br />

(UHMWPE) 5 10 14<br />

Poly(ethylene terephthalate) (PET) 10 12<br />

Poly(methyl methacrylate) (PMMA) 10 12<br />

Polypropylene (PP) 10 14<br />

Polystyrene (PS) 10 14<br />

Polytetrafluoroethylene (PTFE) 10 17<br />

Poly(vinyl chloride) (PVC) 10 14

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