Manually plotting chemical compositions on a WRC-1992 chart is tedious and prone to human error. A provides several benefits:
) on the Y-axis. Unlike its predecessors, the WRC-1992 formulas omit manganese (
A is a digital tool that automates the process of calculating chromium and nickel equivalents and plotting them on the diagram.
Select the appropriate curve based on frequency, antenna height, and percentage of time (e.g., Curve 1 for 50% time, 100 m HAAT). 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
: Unlike older diagrams, the WRC-1992 formula excludes Silicon ( 2. Nickel Equivalent ( cap N i sub e q end-sub
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 Measures austenite-stabilizing elements. Manually plotting chemical compositions on a WRC-1992 chart
Before laptops and smartphones, international radio regulators and engineers used shaped as discs or cardboard rules. After WRC-92, the ITU and various national PTTs (e.g., UK’s Radiocommunications Agency) issued pocket calculators specific to the new frequency allocation tables from that conference.
Less common but equally vital, the "diagram" part of the calculator sometimes referred to a polar diagram of suspension roll centers. By inputting the lateral G-force expected in a diagrammed series of chicanes, the calculator wheel would suggest an anti-roll bar setting (soft/medium/hard) and a damper click value. This was cutting-edge for 1992, where active suspension was banned in WRC.
Input the weld metal composition (C, Mn, Ni, Cr, Mo, N, Nb) and get the Creqcap C r sub e q end-sub Nieqcap N i sub e q end-sub , and FN immediately. Accuracy: Automated calculations eliminate plotting errors. Select the appropriate curve based on frequency, antenna
The WRC-1992 stainless steel diagram has: * Ni eq=Ni+35×C+30×N+0.25×Cu. * Cr eq=Cr+Mo+0.7×Nb. Engineering Stack Exchange
Creq=18.5+2.5+(0.15×0)=21.0Cr sub e q end-sub equals 18.5 plus 2.5 plus open paren 0.15 cross 0 close paren equals 21.0 3. Calculate Nickel Equivalent ( Nieqcap N i sub e q end-sub
In 1992, the Welding Research Council (WRC) released the most accurate "map" yet. It introduced the Ferrite Number (FN) system, replacing vague percentages with a standardized, magnetic-based measurement. How the "Calculator" Works
: It allows users to input the compositions of the base metal and filler metal, then applies a dilution percentage (often 30%) to predict the final weld metal chemistry.
) was added to improve prediction accuracy for modern alloys. 1. Chromium Equivalent ( Creqcap C r sub e q end-sub