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STANDARD VELOCITY IN MATERIALS
FOR ULTRASONIC THICKNESS GAUGES
METALS m/s m/s
A ALUMINIUM 6 320 - 6 400 M MOLYBDENUM 6 250 - 6 300
ALUMINIUM 2024-T4 6 380 NICKEL 5 480 - 6 040
ASBESTOS CEMENT 2 200 PLATINUM 3 960
B BERYLLIUM 12 890 S SILVER 3 600 - 3 700
BISMUTH 2180 SILVER - GERMAN 4 750
BORON CARBIDE 10 920 MOTOR OIL (SAE 30) 1 750
BRASS 3 800 - 4 700 STEEL, MILD 5 900 - 6 100
C CADMIUM 2 770 - 2 800 STEEL, CASTING 5 850
CAST IRON 3 500 - 5 600 STEEL, STAINLESS (AUSTENITIC) 5 660 - 6 120
" " (MODULAR GRAPHITE) 5 600 STELLITE 7 050
CAST GREY MIDDLE 4 600 T TIN 3 300 - 3 330
CONSTANTAN 5 230 TITANIUM 5 900 - 6 100
COPPER 4 650 - 4 720 TUNGSTEN CARBON 6 650
CHROMIUM 6 200 TUNGSTEN 5 180 - 5 400
G GOLD 3 200 - 3 250 URANIUM 3380
INCONEL 5 820 W WATER 1 470
IRON 5 890 - 5 930 WOLFRAM 5 460
LEAD 1 960 - 2 400 ZINC 4 170 - 4 320
M MANGANESE 4 660 - 4 700 ZIRCALOY 2 4 700
MAGNESIUM 5 770 - 5 840 ZIRCONIUM 4 650
MERCURY 1 450
NON-METAL (m/s)
A ACRYLIC 2 870 N NYLON 2 600 - 2 690
ACRYLIC RESIN 2 730 - 2 870 OIL (SAE 30) 1 740
AIR 330 P PARAFFIN WAX 2 200
ALUM. OXIDE 8 700 PERSPEX 2 860
C CERAMIC (MACOR) 5 631 PHENOLIC 1 400
CLAY 2 600 PLEXI GLASS 2 700
CONCRETE 3 650 - 4 270 POLYAMIDE 2 380
DIAMOND 17 500 POLYETHYLENE 1 900 - 2 400
DIESEL OIL 1 250 POLYURETHANE 1 780 - 1 900
EPOXY RESIN 2 650 POLYSTYRENE 2 340 - 2 400
G GLASS (FLINT) 4 260 PORCELAIN 5 600 - 5 900
GLASS (CROWN) 5 260 - 6 120 PVC 2 400
GLASS (QUARTZ) 5 570 Q QUARTZ X CUT 5 740
GLASS (WINDOW) 6 800 QUARTZ FUSED 5 980
GLYCERINE 1 920 QUARTZ GLASS 5 640
ICE 3 980 R RUBBER (BUTYL) 1 900
H HI-DENSITY POLYETHELENE 2 220 - 2 300 RUBBER (SOFT) 1 480
(GREY & WHITE NOT BLACK) RUBBER (VULC.) 2 300
M METHYLENE-OXIDE 9 980 S SILICONE RUBBER 948
MONEL 5 360 - 5 400 TEFLON 1 350 - 1 520
MOTOR OIL (SAE 30) 1 750 WATER 1470
N NEOPRENE 1 600
NB NOTE : THIS SCHEDULE IS ONLY A GUIDE
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Tel: 0027 (0)11 683 4365