Posted by Ian Parkin on 03/07/2022 14:04:56:
V8 eng
your knife has that funny puddle type of area near the tang area
any idea what it is?
Carbon steel blades were usually welded to an iron tang, and the remains of that create the puddle look. I believe welding was originally for cheapness because steel was expensive before Bessemer. Carried on later because it was found the combination is less likely to break at the tang.
Frances mentions sandwiching a high carbon steel core inside a mild-steel envelope. Same reason: knife steel is brittle, prone to crack, and supporting the hard blade inside a tough low-carbon steel makes the whole thing stronger.
Stainless knives don't need any extra help at the tang – the alloy used for knives is tough and hard without being brittle.
Dave