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7C Black

Wet Method Colored Nonfluorescent Magnetic Particles

7C Black is a highly-sensitive magnetic particle powder for nonfluorescent (visible) wet method magnetic particle testing. Particle suspensions prepared with 7C Black provide clear, strong indications and are ideal for locating fine and medium discontinuities on finished parts.

7C Black can be mixed with water or oil and used to find inclusions, seams, shrink cracks, tears, laps, flakes, welding defects, grinding cracks, quenching cracks, fatigue cracks and other defects.

Use with WCP-2 white contrast paint to improve probability of detection and sensitivity.

Benefits

  • Clear indications under visible light
  • Heavy particle buildup for quick detection
  • Can be suspended in water or petroleum distillate (oil) vehicle
  • Great particle mobility

Ordering Information

25 lb / 11.34 kg pail01-1116-81

Product Properties

NDT TypeVisible Magnetic Particle Testing

Particle Suspension VehiclePetroleum Distillate (Oil), Water

Required EquipmentMagnetizing device

Applications

Ideal ApplicationDetecting fine and medium discontinuities, Difficult to reach areas, Field testing, In-service inspections, Light surfaces, Machined parts, Reflective or light-colored surfaces, Spot inspections

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

Compliance

StandardsAMS 3042, ASME, ASTM E1444, ASTM E709, NAVSEA 250-1500-1, NAVSEA T9074-AS-GIB-010/271

Resources

Related Products

  • Carrier II

    Carrier II

    Petroleum suspension vehicle for wet mag particle testing provides excellent particle mobility, good suspension stability and enhanced corrosion protection

  • WCP-2

    WCP-2

    White contrast paint provides a high contrast background to improve probability of detection and sensitivity during visible magnetic particle inspections

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