Home » Table of acoustic material specifications, sound velocities
 Table of acoustic material specifications, sound velocities
The values of sound velocity, density and acoustic impedance listed in the tables below apply to room temperature (20-23 ° C). The actual values may differ due to material compositions, crystal orientations, porosities, and temperatures. Source: "Ultraschallprüfung" (Deutsch, Platte, Vogt), Springer Publishing House 1997

Metals Sound Velocity
(longitudinal wave)
cl [m/s]
Sound Velocity
(transverse wave)
ct [m/s]
Density
[103 kg/m3]
Acoustic
Impedance
[106 kg/m2s]
Aluminium 6200 – 6360 3100 – 3130 2.7 16.7 – 17.2
Beryllium 12720 – 12890 8330 – 8880 1.82 – 1.87 23.2 – 24.1
Lead 2050 – 2400 700 – 710 11.3 – 11.7 23.2 – 28.1
Iron 5950 3220 – 3240 7.9 47.0
Gold 3240 1200 19.7 63.8
Grey Cast Iron 3500 – 5600 2200 – 3200 7.2 25.2 – 40.3
Cast Iron 3500 – 5800 2200 - 3200 6.9 –7.3 24.2 – 42.3
Carbide 6800 – 7300 4000 – 4700 11.0 – 15.0 74.8 – 109.5
Cadmium 2665 – 3300 1500 – 1810 8.6 – 8.7 22.9 – 28.5
Constantan 5240 2640 8.8 46.1
Copper 3666 – 4760 2260 – 2320 8,9 32.6 – 42.4
Magnesium 4602 – 5900 3050 – 3280 1.70 – 1.75 7.8 – 10.3
Brass (Ms58) 3830 – 4250 2050 – 2200 8.1 31.0 – 34.4
Molybdenum 6250 – 6650 3350 – 3510 10.1 – 10.2 63.1 – 67.8
Nickel 4973 – 6040 2960 – 3219 8.8 – 8.9 43.8 – 53.8
Platinum 3960 – 4080 1670 – 1730 21.4 84.7 – 87.3
Silver 3600 – 3790 1590 – 1690 10.4 37.4 – 39.4
Titanium 5823 – 6260 2920 – 3215 4.5 26.2 – 28.2
Zinc 3890 – 4210 2290 – 2440 7.1 27.6 – 29.9
Tin 3210 – 3320 1530 – 1670 7.3 23.4 – 24.2

Non Metals Sound Velocity
(longitudinal wave)
cl [m/s]
Sound Velocity
(transverse wave)
ct [m/s]
Density
[103 kg/m3]
Acoustic
Impedance
[106 kg/m2s]
Aluminium Oxide 9000 – 11000 5500 – 6500 3.6 - 3.95 32.4 – 43.5
Ice
(H2O at -4 °C)
3232 – 3980 1990 0.9 2.9 – 3.6
Epoxy Resin 2400 – 2900 1100 1.1 – 1.25 2.64 – 3.63
Glass (Window Glass) 5770 3430 2.51 14.5
Glass (Quartz Glass) 5570 – 5930 3415 – 3750 2.6 14.5 – 15.4
Graphite, pressed 1600 – 2500 1200 – 1500 1.7 – 2.3 2.72 – 5.8
Rubber, hard 1570 – 2300 - 1.2 1.88 – 2.76
Rubber, soft 1480 – 1550 - 0.90 – 0.95 1.33 – 1.47
PA (Polyamide) 1800 – 2600 1100 – 1200 1.1 – 1.2 1.98 – 3.12
PE (Polyethylene) 1950 – 2000 540 0.9 1.76 – 1.80
PMMA (Plexiglas®) 2670 – 2760 1120 – 1430 1.18 3.2 – 3.3
Porcellain 5600 – 6200 3500 – 3700 2.4 – 2.5 13.4 – 15.5
Polystyrene 2337 - 2350 1020 - 1150 1.05 - 1.06 2.45 - 2.49
PVDF (Polyvinylidenfluoride) 2200 775 1.78 3.9
PTFE (Teflon®) 1350 550 2.2 2.97
PVC (Polyvinylchloride) 2180 – 2260 948 1.38 – 1.40 3.0 – 3.2
Quartz Crystal 5760 3840 2.65 15.2

Steel Sound Velocity
(longitudinal wave)
cl [m/s]
Sound Velocity
(transverse wave)
ct [m/s]
Density
[103 kg/m3]
Acoustic
Impedance
[106 kg/m2s]
Construction Steel, unalloyed up to 0.2% C,
e. g. St 52-3 acc. to DIN 54120
annealed
5890 – 5950 3240 - 3270 7.85 46.2 - 46.7
up to 0.5% C annealed 5940 – 5960 3230 - 3245
7.8 - 7.85 46.3 - 46.8
Construction Steel, alloyed (0.35% C, 0.6% Mn, 1% Cr, 0.2% Mo)
annealed
tempered
hardened
5950
5930
5900
3260
3240
3230
7.84
7.84
7.84
46.6
46.5
46.3
Construction Steel, alloyed (0.3% C, 0.4% Mn, 2% Cr, 2% Ni, 0.2% Mo)
annealed
tempered
hardened
5930
5870 - 5880
5890
3220
3210
3210
7.85
7.85
7.85
46.6
46.1 - 46.2
46.2
Ball Bearing Steal (1% C, 1,5% Cr) 5990 3270 7.8 46.7
Stainless Stahl, austenitic
X 10 Cr Ni 18 8) annealed 5530 2983 7.9 43.7
(X 10 Cr Ni Nb 18 9) 5790 3100 7.8 - 7.9 45.2 - 45.7
(X 12 Cr Ni 18 8) 5660 3120 7.8 44.1
Stainless Steel, ferritic
(0,15% C, 17% Cr) annealed
6010 3360 7.7 - 7.9 46.3 - 47.5
High-Speed Steel
(0.9% C, 4% Cr, 2.5% Mo, 2.5% V, 3% W)
annealed 6060 3850 - -
hardened 5880 3190 - -
Tool Steal (1% C)
annealed 5940 – 5960 3220 - 3245 7.8 - 7.84 46.3 - 46.7
hardened 5854 3150 7.84 45.9
Tool Steel (2% C, 12% Cr, 0,6% W)
annealed 6140 3310 7.75 - 7.8 47.6 - 47.9
hardened 6010 3220 7.75 46.6


Errors and typos are possible, therefore all information is given without guarantee.

Current Dates


13 - 17 November 2017
15th APCNDT, Singapore

16 - 20 April 2018
Tube 2018, Duesseldorf

24 - 27 April 2018
32nd Control, Stuttgart

11 - 15 June 2018
12th ECNDT, Gothenburg

» more



(c) 2017 KARL DEUTSCH Pruef- und Messgeraetebau GmbH + Co KG    Phone (+49-202) 71 92-0     info@karldeutsch.de