Magnaflux NDT Solutions, Penetrant & Testing Equipment

Magnaflux NDT Solutions, Penetrant & Testing Equipment

Magnaflux is one of the foremost producers of liquid penetrant and magnetic particle materials, aerospace approved aqueous cleaners, ultrasonic NDT couplants and equipment amd accessories.

Magnaflux has been one of the world leaders in the production of magnetic particle equipment since 1929. Magnetic particle inspection is a form of NDT (non-destructive testing) that can detect flaws on the surface and in the interior of test pieces made from ferroelectric metals like iron, nickel, cobalt, and many of the alloys formed from them.

Magnetic Particle Inspection Equipment

The Magnaflux magnetic particle inspection process first forces the magnetization of the test piece through direct or indirect magnetization. Direct magnetization uses an electric current passed through the test object to form a magnetic field in the material. Indirect magnetization applies a magnetic field to the test piece from an outside source without applying current to it. Iron particles, either dry or in a wet suspension, are then applied to the test piece. A flaw at the surface or within the structure of the material will allow the magnetic flux to essentially “leak” and attract the particles to the location of the flaw and form an indication. The indication is then evaluated to determine the severity of the flaw and what action should be taken to address it.

Liquid Penetrant Inspection Equipment

Magnaflux is also one of the foremost producers of dye and liquid penetrants materials and accessories. Another widely used and low-cost inspection method, dye penetrant inspection is used to find surface-level flaws in materials that are non-porous such as metals, plastics, and ceramics. The dye penetrant inspection process is based on the capillary action of the ultra-low surface tension fluid, which penetrates into superficial flaws like hairline cracks, surface porosity, or leaks that result from welding, forging, or casting defects.

The penetrant testing procedure is as follows. First, the dye or liquid penetrant is evenly applied to the test piece by brushing, spraying, or dipping. Then, after an appropriate amount of time to allow complete penetration, the excess penetrant is removed and a developer is added. The developer pulls the dye penetrant from the flaw so that it will become visible to the inspector, who uses an ultraviolet light to highlight the fluorescent dye.

For more information about Magnaflux products or technical assistance selecting the right MPI equipment, contact our knowledgeable sales engineers by calling 1-847-577-3980 or emailing

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