In this work some more results of investigations on nitrogen-alloyed stainless steels in the field of strength and corrosion resistance were presented.Besides strength and toughness nitrogen alloyed steels show a good corrosion resistance as well.The strength of a large number of stainless steels was tested in different conditions and the corresponding pitting potential as a measure for the corrosion resistance was recorded.Among them according to their microstructure were some austenitic and ferritic stainless steels and one duplex stainless steel.Especially in austenitic stainless steels we notice two trends of alloy development: high nitrogen steels and austenitic stainless steels with low nickel content.High nitrogen steels are an exceptional class of materials,well developed and established.Nitrogen alloyed austenitic steels with low amount of nickel become more and more important not least due to economic reasons.The alloy development focuses on the role of nitrogen as an alloying element and how this affects the properties like strength,toughness and corrosion behavior.Material from industrial production is now available and provided for testing.The results obtained from new testing series were added to our database and confirm the importance of correlation equations.However,in the filed of corrosion resistance there is a need of more data concerning long term exposure tests in application-relevant environments like marine exposure.The present results complete our database and there is a strong aim to get simple and usefulness correlation equations,which help designers in further enhancements or new developments of stainless steels.