To use the diagram, you must first calculate the equivalents based on the chemical weight percentage of the alloying elements:
: Use material test reports or spectroscopy for both the base metal and the filler metal. wrc-1992 diagram calculator
Nieq=%Ni+35×%C+20×%N+0.25×%Cucap N i sub e q end-sub equals % cap N i plus 35 cross % cap C plus 20 cross % cap N plus 0.25 cross % cap C u To use the diagram, you must first calculate
) to determine the Ferrite Number (FN). This number is critical for preventing "hot cracking" in austenitic stainless steels and ensuring proper corrosion resistance in duplex steels. Calculation Formulas To use the diagram