Magnaflux

Ultrasonic Couplant Comparison

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General Purpose Couplants

Extended and Extreme Temperature Series
Product Ultragel II Sonotrace Gr 30 Echogel Gr 20 Soundsafe UT-X Powder Sono 600 Sono 1100 Pyrogel Gr 100
Temperature Range a -10 to 210 °F
-23 to 99 °C		 25 to 175 °F
-4 to 79 °C		 27 to 140 °F
-3 to 60 °C		 0 to 200 °F
-18 to 93 °C		 32 to 120 °F
0 to 49 °C		 0 to 700 °F
-18 to 371 °C		 700 to 775 °F
371 to 413 °C		 -5 to 805 °F
-45 to 429 °C
Corrosion Inhibition b 90 80 65 75 10 100 N/A 100
Relative Viscosity c 4 4 6 4 1 to 7 6 N/A 10
Actual Viscosity (Brookfield) ∼80,000 cps (Helipath Spindle E @ 1.5 rpm) ∼65,000 cps (Helipath Spindle E @ 1.5 rpm) ∼75,000 cps (LV #4 @ 6 rpm) ∼80,000 cps (Helipath Spindle E @ 1.5 rpm) Variable by altering water amount ∼500,000 cps (LV #5 @ 1.5 rpm) N/A >4,000,000 cps (LV #5 @ 0.3 rpm)
Long Velocity (x105 cm/sec) 1.62 1.52 1.55 1.64 1.51 1.50 N/A 1.20
Impedance (Mrayls) 1.80 1.55 1.60 1.72 1.53 1.37 N/A 1.35
Acoustic Performance d 85 55 50 80 40 70 N/A 55
Typical Max Halogense <50 ppm <50 ppm <50 ppm <50 ppm <50 ppm N/A N/A N/A
Typical Max Sulfure <50 ppm <50 ppm <50 ppm <50 ppm <50 ppm N/A N/A N/A
Water Solubilityf 90 90 80 90 80 20 0 10
ASTM F519 ✔   ✔          
ASTM F945-PWA 36604 ✔              
PWA 36700 ✔     ✔        
BAC 5968 ✔ ✔            
BAC 5980 ✔              
BAC 5439-PSD 622 ✔   ✔          

 

a For thickness gaging (lower maximum for flaw inspection)

b Duration of ferrous corrosion inhibition (mild steel & cast iron): 100 = long term protection, 80 = 60 days-steel, 14 days - iron, 60 = 30 days - steel, 7 days - iron, 40 = 7 days - steel, 2 to 8 hours - iron, 20 = 8 hours-steel, 0 to 2 hours - iron, 0 = no inhibition, like plain water.

c 10 = thick paste, 5 = slow flowing gel, 0 = water

d For thickness gaging (lower maximum for flaw inspection)

e Typical values only, request current C of A for actual values

f 100 = easiest to remove with appropriate solvent, 0 = difficult to remove even with solvent and scrubbing

N/A = Not Available, Information in green indicates best estimates.

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