I wonder if M4, which is carbon steel, is advantageous for a folder. I'm not sure that S30V or S90V is not better for a folder.
Dan Farr wrote that the advantages of carbon steel only comes into play with larger blades, where enough energy can be developed that the increased toughness is useful.
Dan Farr wrote that the advantages of carbon steel only comes into play with larger blades, where enough energy can be developed that the increased toughness is useful.