Magnetic particle testing (MT)

Magnetic particle testing is performed with a coloured fluid or fluorescent dye (under UV light), also at elevated temperatures. Magnetic particle testing is a method of surface and subsurface inspection (up to 2 mm of depth) used for ferromagnetic materials. It involves the introduction of a magnetic field into the object and observation of local dispersions of that field. Dispersions form directly above imperfections and are revealed with the use of fine particles applied to the surface of the inspected element during the application of the magnetic field.
Authorisation range according to ASME
Applied regulationsExamination rangeExamined objects
ASME code:
• Section VIII Division 1
• Section VIII Division 2
Discontinuities of welded joints
Imperfections of castings
Metallurgical products
Welded joints

Authorisation range
Applicable standards, procedures and instructionsExamination rangeExamined objects
PN-EN ISO 9934-1 “Non-destructive testing – Magnetic particle testing –
Part 1: General principles”
PN-EN ISO 17638 “Non-destructive testing of welds - Magnetic particle testing
Surface discontinuities of welded jointsMetallurgical products
Welded joints
PN-EN ISO 10228-1 “Non-destructive testing of steel forgings–
Part 1:Magnetic particle testing”
Surface discontinuities of forgings
PN-EN 1369 “Founding – Magnetic particle testing"Surface discontinuities of casts
PN-EN ISO 10893-5 “Non-destructive testing of steel tubes –
Part 5: Magnetic particle inspection of seamless and welded ferromagnetic steel tubes for the detection of surface imperfections”
Surface discontinuities of steel tubes

Non-Destructive Examination services

We provide professional advice in choosing the appropriate testing method

Our office staff is available from Monday to Friday 7.00 -15.00.
The testing personnel is available depending on the assignment.