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Fundamentals

Delta Ferrite in Stainless Steel Welds — WRC-1992 Diagram and Ferrite Number

Technical guide to delta ferrite in austenitic stainless steel welds. Covers WRC-1992 Schaeffler diagram, Ferrite Number (FN), 3–8 FN optimal range for hot cracking prevention, sigma phase risk, and composition control.

Mar 25, 2026 · 8 min read Read →