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Ferrite Testing - FT

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Ferrite testing is a non-destructive testing method which provides critical data for austenitic stainless steel and duplex materials. The delta ferrite percentage or number allows a technical assessment of material corrosion susceptibility, mechanical properties, service suitability, and service reliability. To perform proper ferrite testing, both a minimum material thickness and a minimum specimen size are required. Test results are interpreted in accordance with current specifications and/or customer requirements.

IRISNDT APPLIES FT TO INSPECT

  • Austenitic stainless steel/Duplex stainless steels
  • Welds (tubing, etc.)
  • Normal construction steel with Austenitic chrome alloy steel welded cladding (e.g. boilers, vessels)
  • Weldments, castings, forgings, weld overlays, wrought materials
  • Weld materials
  • Butt/fillet welds
  • Category A-D welds
  • Stainless weld overlays on non-ferrous interfaces
  • In-service and in-construction components

ADVANTAGES

  • Rapid and accurate analysis
  • Highly portable digital technology
  • Variable calibration in both Ferrite Number and % Ferrite using AWS Standards
  • Testing instrument meets all requirements of ANSI/AWS A4.2 and DIN EN ISO 8249
  • Calibration is traceable to internationally approved IIW secondary calibration standards

LIMITATIONS​

  • Not recommended where the material is at temperatures greater than 50 °C (125 °F)
  • Surface preparation is very important for result accuracy
  • Both a minimum material thickness and a minimum specimen size are required
  • Shape of the specimen may have a negative effect on the results obtained (correction calculations can be performed in some instances)

Your Integrity Concerns, Our Expertise

Address your integrity concerns with confidence. Our expert team is dedicated to providing precise and reliable solutions that safeguard the integrity of your assets, ensuring long-term success and compliance.

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