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Callister - An introduction - 8th edition

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Appendix B / Properties of Selected Engineering Materials • A17<br />

Table B.5<br />

(Continued)<br />

Material<br />

Fracture Toughness<br />

MPa1m ksi1in.<br />

Strength a<br />

(MPa)<br />

Silicon nitride<br />

• Hot pressed 4.1–6.0 3.7–5.5 700–1000<br />

• Reaction bonded 3.6 3.3 250–345<br />

• Sintered 5.3 4.8 414–650<br />

Zirconia, 3 mol% Y 2 O 3 7.0–12.0 6.4–10.9 800–1500<br />

POLYMERS<br />

Epoxy 0.6 0.55 —<br />

Nylon 6,6 2.5–3.0 2.3–2.7 44.8–58.6<br />

Polycarbonate (PC) 2.2 2.0 62.1<br />

Polyester (thermoset) 0.6 0.55 —<br />

Poly(ethylene terephthalate) (PET) 5.0 4.6 59.3<br />

Poly(methyl methacrylate) (PMMA) 0.7–1.6 0.6–1.5 53.8–73.1<br />

Polypropylene (PP) 3.0–4.5 2.7–4.1 31.0–37.2<br />

Polystyrene (PS) 0.7–1.1 0.6–1.0 —<br />

Poly(vinyl chloride) (PVC) 2.0–4.0 1.8–3.6 40.7–44.8<br />

a For metal alloys and polymers, strength is taken as yield strength; for ceramic<br />

materials, flexural strength is used.<br />

Sources: ASM Handbooks, Volumes 1 and 19, Engineered Materials Handbooks,<br />

Volumes 2 and 4, and Advanced Materials & Processes, Vol. 137, No. 6, ASM<br />

International, Materials Park, OH.<br />

Table B.6<br />

Room-Temperature Linear Coefficient of Thermal Expansion<br />

Values for Various Engineering Materials<br />

Coefficient of<br />

Thermal Expansion<br />

Material 10 6 (C) 1 10 6 (F) 1<br />

METALS AND METAL ALLOYS<br />

Plain Carbon and Low-Alloy Steels<br />

Steel alloy A36 11.7 6.5<br />

Steel alloy 1020 11.7 6.5<br />

Steel alloy 1040 11.3 6.3<br />

Steel alloy 4140 12.3 6.8<br />

Steel alloy 4340 12.3 6.8<br />

Stainless Steels<br />

Stainless alloy 304 17.2 9.6<br />

Stainless alloy 316 16.0 8.9<br />

Stainless alloy 405 10.8 6.0<br />

Stainless alloy 440A 10.2 5.7<br />

Stainless alloy 17-7PH 11.0 6.1<br />

Cast Irons<br />

Gray irons<br />

• Grade G1800 11.4 6.3<br />

• Grade G3000 11.4 6.3<br />

• Grade G4000 11.4 6.3

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