Sound Velocity Chart All velocities are approximations: Material Air Aluminum Alumina Oxide Beryllium Boron Carbide Brass Cadmium Copper Glass(crown) Glycerin Gold Ice Inconel Iron Iron (cast) Lead Magnesium Mercury Molybdenum Monel Neoprene Nickel Nylon, 6.6 Oil (SAE 30) Platinum Plexiglass Polyethylene Polystyrene Polyurethane Quartz Rubber, Butyl Silver Steel, Mild Steel, Stainless Teflon Tin Titanium Tungsten Uranium Water Zinc
Sound Velocity Inch/µS M/s 0.01 330 0.25 6300 0.39 9900 0.51 12900 0.43 11000 0.17 4300 0.11 2800 0.18 4700 0.21 5300 0.08 1900 0.13 3200 0.16 4000 0.22 5700 0.23 5900 0.18 4600 0.09 2200 0.23 5800 0.06 1400 0.25 6300 0.21 5400 0.06 1600 0.22 5600 0.1 2600 0.07 1700 0.13 3300 0.11 1700 0.07 1900 0.09 2400 0.07 1900 0.23 5800 0.07 1800 0.14 3600 0.23 5900 0.23 5800 0.06 1400 0.13 3300 0.24 6100 0.2 5200 0.13 3400 0.58 1480 0.17 4200
Acoustical Properties Of Common Materials
Material METALS Aluminum 1100-0 Aluminum 2024-T4 Aluminum 6061-T6 Beryllium Brass (70% Cu - 30% Zn Bronze (Phosphor 5%) Copper (CP) Gold Hastelloy C Hastelloy X Inconel (Wrought) Iron (Cast), Various Alloys Lead (94Pb-6Sb) Magnesium, Various Alloys Monel Nickel (CP) Silver (0.99 Fine) Steel 1020 Steel 4340 Steel , CRES 300 Series Steel , CRES 400 Series Titanium, 6AI-4V Zircaloy Zirconium POLYMERS Acrylics Cellulose Acetate Nylon Phenolic Polycarbonate Polyethylene Polystyrene Rubber (Natural) Rubber (Carbon Filter) Rubber (Silicone) Teflon MISCELLANEOUS SOLIDS Alumina (Al2O3) Concrete Glass (Plate) Granite Ice ( -16C) Quartz, Natural Quartz, Fused Sapphire Tungsten Carbide COMPOSITE MATERIALS Fiberglass (50 v/o) Graphite/Epoxy (60 v/o) Boron/Epoxy (50v/o) LIQUIDS Ethylene Glycol Glycerin Oil (SAE 20) Water (20C) Gases Air (20ºC) Nitrogen (20ºC) Oxygen (20ºC)
Ultrasonic Velocity Longitudinal
Transverse (Shear)
Impedanc e
in / us
mm / us
in / us
mm / us
Z
0.25 0.25 0.25 0.51 0.17 0.14 0.19 0.13 0.23 0.23 0.31 0.1380.220 0.09 0.2150.228 0.21 0.22 0.14 0.23 0.23 0.2210.226 0.2120.237 0.24 0.19 0.18
6.23 6.38 6.3 12.88 4.37 3.53 4.75 3.25 5.84 5.79 7.82 3.5055.588 2.16 5.4615.791 5.36 5.64 3.61 5.89 5.84 5.6135.740 5.3856.020 6.17 4.72 4.65
0.12 0.12 0.12 0.35 0.08 0.09 0.09 0.05 0.11 0.11 0.12 0.0870.126 0.03 0.1190.122 0.11 0.12 0.06 0.13 0.13 0.120-. 0123 0.1180.132 0.13 0.09 0.09
3.07 3.15 3.15 8.89 2.11 2.24 2.34 1.19 2.9 2.74 3.02 2.2103.200 0.81 3.0233.099 2.72 2.97 1.6 3.25 3.25 3.0483.124 2.9973.353 3.3 2.36 2.26
17.1 17.6 17 23.5 37.1 31.3 42.5 62.6 52.2 47.7 64.5 24.341.2 23.5 9.2410.6 47.2 50 37.8 45.4 45.6 44.645.4 41.346.3 27.3 44.2 30.1
0.1050.109 0.1 0.02 0.06 0.09 0.11 0.09 0.06 0.07 0.04 0.05
2.6672.769 2.44 2.69 1.42 2.29 2.67 2.39 1.55 1.68 0.94 1.37
0.044-
1.118-
3.153.51 3.19 -----------1.9 2.71 2.94 2.52 1.74 -----------1.4 3
0.43 0.1670.207 0.23 0.16 0.15 0.23 0.22 0.47 0.26
10.85 4.2425.258 5.77 3.96 3.81 5.74 5.56 11.91 6.66
0.12 0.12 0.13
3.15 2.97 3.33
0.06 0.08 0.07 0.06
1.63 1.93 1.75 1.47
No Shear Component
0.01 0.01 0.01
0.36 0.36 0.33
No Shear Component
No Shear Component 0.057 1.448 No Shear Component No Shear Component No Shear Component No Shear Component
0.05
1.14
No Shear Component No Shear Component No Shear Component
0.25
6.35
No Shear Component
0.14
3.43
No Shear Component
0.08
1.93
No Shear Component
0.14 0.3 0.16
3.53 7.67 3.99
No Shear Component
0.07 0.08 0.07
1.73 1.96 1.83
No Shear Component No Shear Component No Shear Component
No Shear Component No Shear Component
43.1 12.4 14.5 10.9 3.6 15.2 14.5 47.2 67.6 6.04 4.65 6.38 1.8 2.42 1.51 1.48 0 0 0