Velocity Table

Class Instrumentation Ltd Ultrasonic Sound Velocity Table

 

 

A sound velocity table is a list of the speed of sound in various materials.  This information is necessary to have when using our Touchstone 1 ultrasonic thickness gauge, as the speed the ultrasound will move through the material in question needs to be programmed into the gauge to obtain an accurate thickness reading.

All velocities in this sound velocity table are approximations:

Material Sound Velocity Inch/µSecond Metres/second
Air 0.013 330
Aluminium 0.250 6300
Alumina Oxide 0.390 9900
Beryllium 0.510 12900
Boron Carbide 0.430 11000
Brass 0.170 4300
Cadmium 0.110 2800
Copper 0.180 4700
Glass(crown) 0.210 5300
Glycerine 0.075 1900
Gold 0.130 3200
Ice 0.160 4000
Inconel 0.220 5700
Iron 0.230 5900
Iron (cast) 0.180 4600
Lead 0.085 2200
Magnesium 0.230 5800
Mercury 0.057 1400
Molybdenum 0.250 6300
Monel 0.210 5400
Neoprene 0.063 1600
Nickel 0.220 5600
Nylon, 6.6 0.100 2600
Oil (SAE 30) 0.067 1700
Platinum 0.130 3300
Plexiglas 0.110 1700
Polyethylene 0.070 1900
Polystyrene 0.0930 2400
Polyurethane 0.0700 1900
Quartz 0.230 5800
Rubber, Butyl 0.070 1800
Silver 0.140 3600
Steel, Mild 0.230 5920
Steel, Stainless 0.230 5800
Teflon 0.060 1400
Tin 0.130 3300
Titanium 0.240 6100
Tungsten 0.200 5200
Uranium 0.130 3400
Water 0.0584 1480
Zinc 0.170 4200
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