Today I decided to sharpen a folder I love but rarely use: a BuckLite 426\, end 90's, paid some 90 guilders, (Dutch florins, you know?), some $40 in that time.
Long time ago I've thinned it somewhat: it had a hollow blade with some curious thickening just behind the edge I've removed of
course. Today I made a convex edge ending at some 30 degree inclusive in a few minutes with sandpaper and leather + Cr2O3. It got scary sharp, and the edge is remarkable strong. Fine
grain, no burr issues.
I'm told the steel is 440C. Never seen any kitchen knife in that stuff. Why? Or is there some denomination problem I ignore?