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Magnetic Particle Testing

Magnetic particle testing (MT) is a widely applied non-destructive inspection method. It is used for detecting surface and subsurface irregularities in ferrous parts. With our broad range of approved and highly efficient technologies and equipment we can support you in many ways.

Magnetic particle testing is a non-destructive testing method in order to detect surface and sub-surface irregularities in ferrous parts. As a first step a magnetic field is put into the part tested. The magnetization can be direct (electrical current is passed through the test object) or indirect (magnetic field is applied from an outside source). Ferrous iron particles (dry / wet suspension) are then applied to the part. In case of an area of flux leakage, the particles are attracted to this area and form an ‘indication’. The inspection can be performed under UV(A) or white light, depending on the type of MT product used: fluorescent or black magnetic ink.


Approved magnetic particle testing

With Ardrox® non-destructive testing (NDT) products we are well acquainted with the high standards in the aerospace field for many years. Additionally, the high quality of the available NDT products and services has also convinced the automotive industry and its component supplier market, general industry and all areas of energy generation and transportation. The multiple approvals of our Lumor® and Supramor® MT products are proof of this.


Competence for your success

We support your processes continuously and competently. Trained experts are globally available for your questions at all levels regarding your process. This broadly diversified competence is also requested elsewhere: Chemetall experts, for example are members of various committees which take part in discussions to define continuous improvements, standards, rules and norms concerning non-destructive material testing.


Our technology portfolio:

  • Ardrox® for aerospace applications
  • Lumor®
  • Supramor®


Industries we serve:

  • Aerospace
  • Automotive
  • Automotive Components
  • General Industry
  • Energy Generation
  • Transportation


  • Chemetall NDT - more than 60+ years of experience in NDT
  • Broad portfolio including approved products
  • Easy testing with well-defined equipment
  • Direct contact to the manufacturer and local service




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