(x-axis), the diagram directly provides the predicted Ferrite Number. The 1992 version is known for having a wider, more reliable scale than the DeLong diagram, which was limited to roughly 18 FN. Why Use a WRC-1992 Diagram Calculator?
To manually calculate or build your own spreadsheet calculator, use the established WRC-1992 formulas and process outlined below. 🧮 1. The WRC-1992 Formulas wrc-1992 diagram calculator
Creq=%Cr+%Mo+0.7×%Nbcap C r sub e q end-sub equals % cap C r plus % cap M o plus 0.7 cross % cap N b Represents the austenite-stabilizing elements. To manually calculate or build your own spreadsheet
It is common to confuse the WRC-1992 diagram with older microstructural maps. Here is how they compare: Schaeffler Diagram DeLong Diagram WRC-1992 Diagram Phases (Austenite, Ferrite, Martensite) Ferrite Number (FN) Ferrite Number (FN) Manganese ( ) Included ( on Y-axis) Included ( on Y-axis) Intentionally Omitted Nitrogen ( ) Included ( on Y-axis) Optimized ( on Y-axis) Duplex Steels Poor Accuracy Poor Accuracy Highly Accurate up to 100 FN Industry Applications and Standards It is common to confuse the WRC-1992 diagram
By entering the correct weight percentages of these alloying elements from a material test report or mill certificate, the calculator determines a coordinate point on the diagram. The location of this point tells the user:
) based on the chemical composition (weight percent) of the weld metal: Chromium Equivalent ( cap C r sub e q end-sub