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Magnetic Particle Testing 

Magnetization is possible of certain materials, it is possible to find out discontinuities by using the medium (iron powder) having the magnetic attraction. Magnetic Particle Inspection is relatively easy and simple test method that can be applied at various stages of manufacturing and process.

The direction is more impartment factor than the magnitude of magnetizing current. For reliable magnetic particle inspection, magnetic lines should be perpendicular to the discontinuity. If magnetic lines are parallel to the discontinuity then leakage will be little and indications will be small or indefinite.

Cracks distort the magnetic lines of force and create poles on either side of the crack. Strength depends upon the number of interrupted lines of force. Indications of maximum size are found when magnetic lines are at right angle to discontinuities. The Intensity of magnetization depends upon the susceptibility of the material to become magnetized

NDT Consultancy Services provides training and testing services in Magnetic Particle Inspection (MT) and services include:

  • Dry Powder Magnetic Particle Examination
  • Wet Visible Magnetic Particle Examination
  • Wet Fluorescent Magnetic Particle Examination (WFMT)
  • Magnetic Particle Examination with Yoke
  • Magnetic Particle Examination with coils

Applicable Code / Specification used for Magnetic Particle Examination:

  • ASME Section V, A 709 Latest Edition
  • ASME Section I, Boilers
  • ASME Section VIII, Pressure Vessels
  • ASME B31.1, Power Piping
  • ASME B31.3, Petrochemical Piping
  • AWS D1.1
  • API 1104
  • API 6A

Application of Magnetic Particle Testing


  • Nuclear Industries
  • Ship Building Industries
  • Oil Industries
  • Refinery and Petrochemical Industries
  • Steel Industries
  • Aerospace Industries


  • Offshore platforms
  • Construction and maintenance of pipelines
  • Pressure vessels
  • Bridges
  • Cranes Tanks and tankers
  • Aerospace vehicles
  • Power generation equipment
  • Research facility