1 Grey

Coloured Non-fluorescent Magnetic Particles

1 Grey provides strong contrast on most metal surfaces during dry method mag particle testing in visible light. It is ready-to-use for visible light flaw detection of surface and slightly subsurface discontinuities in ferrous metals.

1 Grey can be used in a powder blower or shaken from a bottle during magnetisation, and blown off while current is still being applied. On material with a high magnetic retentivity, indications can still be formed after the current has been turned off.

  • Sharp, colour-contrast indications on high reflective surfaces
  • Ready-to-use
  • Good particle buildup for quick detection
  • Highly refined for optimal particle shape and sise combination
  • Minimal dust build-up
  • Does not require a black light or darkened inspection area

Ordering Information

5 Kg057C005

Product Properties

NDT TypeVisible Magnetic Particle Testing

Required EquipmentMagnetizing device


Ideal ApplicationCastings, Dark surfaces, Detecting medium, large and course discontinuities, Extreme temperatures, Field testing, Forgings, In-service inspections, Large parts, Light, medium, dark surfaces, Rough/textured surfaces, Spot inspections, Weld testing

Defect ExamplesFatigue cracks, Grinding cracks, Inclusions, Laps, Quenching cracks, Seams, Shrink cracks, Tears, Welding defects


StandardsAMS 3040, ASME BPVC, ASTM E1444/E1444M, ASTM E709, MIL-STD-2132, NAVSEA T9074-AS-GIB-010/271

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