Austenitic steels are used in almost all technical areas and are characterized by their corrosion resistance. In practice, however, damage caused by corrosion occurs again and again. Depending on the quality, manufacturing or processing state, austenitic stainless steels can develop phases that are susceptible to corrosion. And this even though the chemical composition corresponds to the specification. These phases can be detected and evaluated under a light microscope through a metallographic examination with special color etching.
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