Olympus 27MG, User Manual

Page: 85 / 98

DMTA-10043-01EN, Rev. C, July 2016
Sound Velocities 77
Appendix: Sound Velocities
Table 10 on page 77 presents a tabulation of the ultrasonic velocity in a variety of
common materials. It is provided only as a guide. The actual velocity in these
materials may vary significantly for a variety of reasons, such as: composition,
preferred crystallographic orientation, porosity, and temperature. Therefore, for
maximum accuracy, establish the sound velocity in a given material by first testing a
sample of the material.
Table 10 Ultrasonic velocities
Material V (in./µs) V (m/s)
Acrylic resin (Perspex) 0.107 2730
Aluminum 0.249 6320
Beryllium 0.508 12900
Brass, naval 0.174 4430
Copper 0.183 4660
Diamond 0.709 18000
Glycerin 0.076 1920
Inconel 0.229 5820
Iron, Cast (slow) 0.138 3500
Iron, Cast (fast) 0.220 5600
Iron oxide (magnetite) 0.232 5890
Lead 0.085 2160