Ferrite measurement uses magnetic induction to quantify ferrite phase in austenitic (4-8% optimal) and duplex (35-65%) stainless steels for corrosion resistance, crack prevention. Tove Leeds tests welds, castings, forgings in oil & gas, chemical, power, marine via portable meters at 168 Hz against NIST standards.

Probe detects permeability changes from ferrite grains for FN/%Fe readings. Non-destructive, minimal prep, suits curves ≥2mm thick.

ISO 9712-certified techs calibrate standards, multiple sites, correct for roughness/temp. Reports ensure NACE/API compliance, material certification.