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

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

818 • Appendix B / Properties of Selected Engineering Materials

Table B.6 (Continued)

Coefficient of

Thermal Expansion

Material 10 −^6 (◦C)−^110 −^6 (◦F)−^1

FIBER MATERIALS

Aramid (Kevlar 49)

• Longitudinal direction –2.0 –1.1


• Transverse direction 60 33
  Carbon (PAN precursor)


• Standard modulus
  Longitudinal direction –0.6 –0.3
  Transverse direction 10.0 5.6


• Intermediate modulus
  Longitudinal direction –0.6 –0.3


• High modulus
  Longitudinal direction –0.5 –0.28
  Transverse direction 7.0 3.9
  E-glass 5.0 2.8
  COMPOSITE MATERIALS
  Aramid fibers-epoxy matrix
  (Vf=0.6)


• Longitudinal direction –4.0 –2.2


• Transverse direction 70 40
  High-modulus carbon fibers-epoxy matrix
  (Vf=0.6)


• Longitudinal direction –0.5 –0.3


• Transverse direction 32 18
  E-glass fibers-epoxy matrix (Vf=0.6)


• Longitudinal direction 6.6 3.7


• Transverse direction 30 16.7
  Wood


• Douglas fir (12% moisture)
  Parallel to grain 3.8–5.1 2.2–2.8
  Perpendicular to grain 25.4–33.8 14.1–18.8


• Red oak (12% moisture)
  Parallel to grain 4.6–5.9 2.6–3.3
  Perpendicular to grain 30.6–39.1 17.0–21.7
  Sources:ASM Handbooks,Volumes 1 and 2, Engineered Materials Handbooks,Volumes 1
  and 4, Metals Handbook: Properties and Selection: Nonferrous Alloys and Pure Metals,
  Vol. 2, 9th edition, andAdvanced Materials & Processes,Vol. 146, No. 4, ASM International,
  Materials Park, OH;Modern Plastics Encyclopedia ‘96,The McGraw-Hill Companies,
  New York, NY; R. F. Floral and S. T. Peters, “Composite Structures and Technologies,”
  tutorial notes, 1989; and manufacturers’ technical data sheets.