The WRC-1992 diagram provides information on the welding properties of the various types of microstructure, as a function of what alloying elements they contain. Chromium equivalent is calculated using the weight percentage of ferrite stabilising elements and Nickel equivalent is calculated using the weight percentage of austenite stabilising elements. By entering the Ni-equivalent over the Cr-equivalent for stainless steel into a diagram according to WRC one is able to find the content of austenite and ferrite in the resulting microstructure.

The WRC diagram is today accepted as an improved version of the shaeffler or the de-long diagram.


After entering the range of the standard analysis and the actual analysis the Ni-equivalent and the Cr-equivalent are calculated and shown in a diagram. 

The sample data can be overridden and the red backgrounded fields show the results.

Carbon C [%]
Chromium Cr [%]
Molybdenum Mo [%]
Nickel Ni [%]
Copper Cu [%]
Niobium Nb [%]
Nitrogen  N [%]
Chromium equivalent  [%]
Nickel equivalent  [%]