Materials and welding metallurgy
Hot cracking / FN
Hot cracking / FN – interactive engineering module focused on hot cracking in welding. Learning format: Simulator · Active learning. Explains the principle, technical relationships and practical use.
SimulatorActive learning
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.
Related engineering terms
The module connects these terms with practical engineering explanations:
hot cracking in weldinghot crackingferrite numberFN
Continue with the practical module.
Open this topic directly in the interactive WeldScope portal.