Ferrite content measurements / phase analysis

A control of the ferrite content and/or other constituent phases can help to avoid corrosion in stainless steel welds, pipes, sheet metal, pressure vessels and petrochemical components.

Part of our ferrite content measurement takes place during procedural testing of ferrite-austenitic (duplex) materials, where requirements according to, for example SS-EN 13445 are prescribed. Ferrite content measurement is also performed on austenitic stainless steel welds, among other things.

The laboratory performs ferrite content measurements (phase analyzes) in light-optical microscopes with associated phase analysis software. The measurement is performed by automatic image analysis or for ferrite content measurement by manual point counting.

Scope of Accreditation

  • ASTM E562
  • ASTM E1245
  • ISO 9042


The picture shows a microstructure of a duplex steel where we see two phases. The red phase refers to ferrite with a share of 50 percent.

Contact persons

Johan Ageryd
Head of Metallography

Phone: +46 (0)31-65 64 94


Swedac Ackrediteringsmärke 5622


Safe Control Materialteknik AB is accredited since 2001 and has had flexible accreditation since 2016. 

All testing takes place against European and international standards.

See our Scope of Accreditation »


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