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Home Products Metals Testing Sonotrace

Sonotrace

General-Purpose Ultrasonic Couplant

Sonotrace 30 is a medium‑viscosity, glycerin-free ultrasonic gel ideal for flaw detection and thickness gauging in clean, low-reactivity environments. Engineered to minimize halogens and sulfur content, it suits low‑melting‑point metals and nuclear/aerospace specifications, offering excellent corrosion inhibition, efficient surface wetting, and extended working time thanks to humectants that slow drying. It’s water-washable, silicone-free, and cost-effective for broad inspection use cases.

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Features
  • Contains humectants to retard drying (for extended inspection time)
  • Very good corrosion inhibition
  • Nuclear-grade performance
  • Excellent surface wetting on oily or dirty parts
  • Water-washable for easy removal
  • Silicone-free
  • Glycerin-free
  • Slower drying time
  • Balanced price-to-performance value
Applications
  • Flaw detection
  • Thickness gauging
  • Aerospace inspections
  • Nuclear inspections
  • Composite substrate inspection
  • Aircrafts and airframes
  • Weld inspection
Technical Data
Property Specification
Viscosity (comparative)* 4.5 (medium-thick gel)
Actual Viscosity ≈ ~65,000 cps (Brookfield)
Appearance Transparent gel, light green
Acoustic Velocity (longitudinal) ~1.52 × 10⁵ cm/s
Acoustic Impedance ~1.55 Mrayls
Acoustic Performance 55 (on Magnaflux scale)
Silicone No
Glycerin No
Propylene Glycol Yes
Water Soluble Yes
Halogens & Sulfur < 50 ppm
Temperature Range –4 °C to 79 °C (25 °F–175 °F)
Storage Temperature 10 °C to 30 °C (50 °F–86 °F)
Compatibility Most metals and composite materials
Packaging Sizes 1 gal/3.78 L, 5 gal/18.9 L, 55 gal/208 L
  • Tags: aerospace inspection, corrosion inhibition, Flaw detection, general‑purpose couplant, glycerin‑free, nuclear‑grade, silicone‑free, thickness gauging, ultrasonic couplant, water‑washable

Tags:

general‑purpose couplant, ultrasonic couplant, glycerin‑free, silicone‑free, corrosion inhibition, nuclear‑grade, aerospace inspection, flaw detection, thickness gauging, water‑washable

Couplants, General Purpose, Metals Testing

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