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Applications

Measurement of the delta ferrite content in austenitic and duplex steel. All magnetic components of the otherwise non-magnetic structure are also recognized, that is, in addition to delta ferrite also, e.g., defor- mation  martensite  and  other  ferritic  phases.  Using  the  hand-held  instrument  FERITSCOPE?  FMP30  you can measure both the delta ferrite content and the alpha martensite content.

Examples

?Measurements  according  to  the  Basler  Standard
?Inspection of the ferrite content in weld seams and austenitic platings
?Measurement of the ferrite content or martensite content (only connected with hand-held instrument FERITSCOPE?  FMP30) to estimate the material properties as the susceptibility to cracking under tension or  vibration,  material  strength  or  toughness,  corrosion  resistance

Probe design

Axial single tip probe with spring-loaded measuring system

Applications

Delta ferrite or alpha martensite

Measurement range

0.1 … 140 FN    or 0.1 … 105 Fe%
(You can select between the units WR-FN and Fe% in all connectable instruments. In the hand-held instru- ment FERITSCOPE?  FMP30 you can additionally select between the units Fe% and aM%)

Trueness

based on factory calibration standards of the Helmut Fischer GmbH

0.1 … 5 FN: ≤ 0.15 FN
5 … 120 FN: ≤ 3 % of nominal value

Repeatability precision

Note

based on factory calibration standards of the Helmut Fischer GmbH,
5 single readings per standard

0.1   …   10 FN: ≤ 0.05 FN
10 …   40 FN: ≤ 0.5 % of reading
40 … 120 FN: ≤ 1 % of reading

The inhomogeneity of the material structure mainly defines the measurement variation. So, the meas- urement variation is higher for specimen with a larger inhomogeneity in the material structure as opposed to the factory calibration standards.