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Proper Etchant for Hot and Cold work steel

Proper Etchant for Hot and Cold work steel

Proper Etchant for Hot and Cold work steel

(OP)
I have two samples that have been produced by extrusion(from powder). K190(X220CrVMO 13-4) and a steel that is H13.
I am looking for Proper etchant solution to see the carbides and also i want to reveal the matrix if it is Austenite or martensite?
Thanks for any kind of help.

RE: Proper Etchant for Hot and Cold work steel

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