C Reference
156
UMFLUXUS_G8V4-6-1EN, 2018-10-10
C
Reference
The following tables provide assistance for the user. The accuracy of the data depends on the composition, temperature
and processing of the material. FLEXIM does not assume liability for any inaccuracies.
C.1
Sound Speed of Selected Pipe and Lining Materials at 20 °C
The values of some of these materials are stored in the internal database of the transmitter. Column c
flow
shows the sound
speed (longitudinal or transversal) used for the flow measurement.
The sound speed depends on the composition and the manufacturing process of the material. The sound speed of alloys
and cast materials fluctuates strongly. The values only serve as an orientation.
Material (display)
Explanation
c
trans
[m/s]
c
long
[m/s]
c
flow
Carbon Steel
steel (normal)
3 230
5 930
trans
Stainless Steel
steel, stainless
3 100
5 790
trans
DUPLEX
duplex steel
3 272
5 720
trans
Ductile Iron
ductile iron
2 650
-
trans
Asbestos Cement
asbestos cement
2 200
-
trans
Titanium
titanium
3 067
5 955
trans
Copper
copper
2 260
4 700
trans
Aluminium
Aluminum
3 100
6 300
trans
Brass
brass
2 100
4 300
trans
Plastic
plastic
1 120
2 000
long
GRP
glass reinforced plastic (GRP)
-
2 650
long
PVC
polyvinyl chloride
-
2 395
long
PE
polyethylene
540
1 950
long
PP
polypropylene
2 600
2 550
trans
Bitumen
bitumen
2 500
-
trans
Acrylic
acrylic glass
1 250
2 730
long
Lead
lead
700
2 200
long
Cu-Ni-Fe
copper-nickel-iron alloy
2 510
4 900
trans
Grey Cast Iron
grey cast iron
2 200
4 600
trans
Rubber
rubber
1 900
2 400
trans
Glass
glass
3 400
5 600
trans
PFA
perfluoralcoxy
500
1 185
long
PVDF
polyvinylidene fluorid
760
2 050
long
Sintimid
Sintimid
-
2 472
long
Teka PEEK
Teka PEEK
-
2 534
long
Tekason
Tekason
-
2 230
long
