Measurement of retained austenitic fractions of steel & stainless steel
Measurement of magnetic moment at saturation of monetary coins

Key features & Benefits

• Direct characterisation of austenitic/ferritic fraction of various steel alloys: TRIP, Stainless, dual-phase, etc
  
• Measurement of magnetic moment at saturation of monetary coins
  
• Compensation for composition
  
• Results obtained within seconds
  
• Better than 0.1% repeatability
  
• Traceable calibration with Ni-standard
  
• Easy interface and dataprocessing
  

Workflow


General Description

The MSAT retained austenite measurement instrument determines the austenitic / ferritic fraction of various types of steel (eg TRIP, stainless steel) at room temperature. The fraction of retained austenite is determined based on the magnetic moment with the necessary corrections for chemical composition and shape.

The equipment measures the magnetic moment of a metallic sample in saturation when put in an external magnetic field. Hence it is also suited for quality control on monetary coins.

Setup



The MSAT retained austenite measurement instrument consists of:
1.  Measurement unit with magnetic field and sensor coils
2.  Fluxmeter for measuring the magnetic moment
3.  PC with measurement & control software for easy interpretation of results, composition compensation and data-logging

Applications

• Determination of retained austenite in steels with compensation for composition
  
• Determination of magnetic moment at saturation (eg quality control of monetary coins)
  
• Determination of ferrite or martensite in austenitic steels with compensation for composition
  
• Determination of magnetic content in ores and slags
  

Specifications

• Sample: typically thin in one dimension (1-2 mm) and 5 times larger in the other dimensions (e.g. 10 x 10 x 2 mm3); maximum dimensions of 30x30x5 mm
  
• Measurement accuracy better than 1% for a sample of >200 mm3.
  
• Output:
  
  • Intuitive user interface representing input& output data
    
  • Excel™ compatible file containing all the chemical composite fractions and measured data of magnetic moment and ferrite fraction
    
• Probe aperture 30mm x 8 mm
  
• Magnetic field between yoke pole shoes > 300 kA/m
  
• 230 V, 50Hz or 110 V, 60 Hz
  

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