Magnetic Particle Testing Services
At American Metal Testing, we provide industrial customers nationwide with Magnetic Particle Testing (MPT) services. Magnetic Particle Testing, or Magnetic Particle Inspection (MPI), is a non-destructive testing method used to detect surface and subsurface discontinuities in ferromagnetic materials, including iron, nickel, cobalt, and their alloys. As a NADCAP-certified NDT provider, we use magnetic particle inspection services to test components across a wide range of demanding industrial sectors, ensuring they meet strict performance standards.
You can visit our comprehensive MPI guide for more information on our magnetic particle testing services.
When to Use Magnetic Particle Inspection Services for Non-Destructive Testing
- Used only for ferromagnetic materials (non-ferrous materials like aluminum, magnesium, or certain stainless steels cannot be tested with MPI)
- An ideal NDT method for identifying surface and near-surface flaws like cracks, porosity, and inclusions
- A quicker examination method than most NDT processes, including FPI and RT
- Offers a cost-effective option compared to other NDT methods
- MPI has limitations in detecting subsurface discontinuities compared to other NDT methods
Magnetic Particle Testing Capabilities at AMT
Our MPI services can accommodate a wide range of part sizes and inspection requirements. Our team of NDT professionals will determine the best approach for each specific component. Our magnetic particle inspection capabilities include:
- Dry powder and wet fluorescent magnetic particle testing methods
- Can test parts and components up to 12 feet long
- Full magnetization capability for proper indication formation
- Certified NAS-410 inspectors review all results
AMT's Magnetic Particle Inspection Process
Our magnetic particle inspection services include five primary steps: pre-cleaning, magnetization, application of magnetic particles, inspection/interpretation, and post-cleaning.
- Pre-Cleaning: The material or component is cleaned and dried to remove any oil, grease, dirt, or other contaminants that may interfere with testing.
- Magnetization: A strong magnetic field is applied to the test material by passing an electric current through it or by placing a magnetic yoke on its surface.
- Application of Magnetic Particles: Magnetic particles, usually in the form of dry powder or wet suspension, are applied to the test surface while the magnetic field is still present. The magnetic particles are attracted to areas where a surface or near-surface defect distorts the magnetic field.
- Inspection & Interpretation: The surface is examined for particle accumulation. The particles will form a visible indication at the location of any surface or near-surface defect.
- Post-Cleaning: After the inspection, the test material is cleaned to remove the magnetic particles.
Industries That Rely on AMT's Magnetic Particle Testing Services
We provide MPI services for industrial customers in a wide range of sectors, including aerospace, automotive, structural steel, and more. Our testing laboratory is accredited by the National Aerospace and Defense Contractors Accreditation Program (NADCAP), qualifying us to provide non-destructive testing services to leading aerospace manufacturers. Specific industrial applications for our magnetic particle testing services include:
- Welded components in all industries
- Aircraft equipment, including engine components and landing gear
- Automotive parts like axles, crankshafts, and gears
- Power generation equipment
All testing is governed by American Society for Testing and Materials (ASTM) International, Aerospace Material Specifications (AMS), American Society of Mechanical Engineers (ASME), Society of Automotive Engineers (SAE), American National Standards Institute (ANSI), American Welding Society (AWS), military (MIL) specifications, or applicable customer specifications.
Learn How AMT Can Provide Magnetic Particle Testing Services for Your Application
Contact American Metal Testing to discover how our MPT services can provide non-destructive testing for your metal components. You can also request a quote for pricing information. We also offer additional non-destructive metal testing methods, including radiographic testing and fluorescent penetrant inspection services.
