Who developed stainless steel?
Stainless steel
Chemical composition (main alloying elements) in wt%  from EN 10088-1 (2005) standardSteel  designationRemarkTypeNameNumberNCrCuMoi2304X2CrNiN23-41.43620,05  to 0,2022,0 to 24,00,10 to 0,600,10 to 0,603,5 to 5,5Lean duplex2205X2CrNiMoN22-5-31.44620,10  to 0,2221,0 to 23,0—2,50 to 3,54,5 to 6,5Reference grade255X2CrNiMoCuN25-6-31.45070,20  to 0,3024,0 to 26,01,00 to 2,503,0 to 4,06,0 to 8,0Super duplex