Materials and welding metallurgy
Hot cracking / FN
A small proportion of δ-ferrite in austenitic weld metal reduces hot-cracking susceptibility. Excessive ferrite, however, may impair properties and corrosion resistance in some applications.
Open interactive module →Topic overview
A small proportion of δ-ferrite in austenitic weld metal reduces hot-cracking susceptibility. Excessive ferrite, however, may impair properties and corrosion resistance in some applications.
What the module covers
- Ferrite number / hot-cracking trainer
- Why FN matters
Educational content does not replace current standards, approved WPS/WPQR documentation or decisions by competent welding coordination personnel.
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