senex morosus moderator
- Jul 30, 2006
is the generic 440 similar to the 8Cr13MoV? Your steel chart does show almost the same composition as AUS8, which I prefer to the too-high-imo chrome content of the 440 series.
and I'm ordering up an frn robin, my G10 Cara Cara was a very good work knife... until I took it apart and played with it on the drill press >_> <_<
Moly_________0.75_________0.10 - 0.30
Van___________________0.10 - 0.26
There is some question in my mind as to the actual composition of alloys called "440A" that are found in Chinese knives. Case in point: I have a Chinese Buck that is supposed to be 440A, but the measured hardness of my blade is 58 HRC. 440A isn't supposed to get that hard.
I don't currently have a good sample of 440A to measure edge retention. There is so much 440A that is poorly heat treated. Planning on finding a suitable Kershaw. I trust them to heat treat that steel properly.
According to Carpenter Steel, a high end maker of steel alloys, 440A will only attain a tempered hardness of "56/57". I think the edge retention would be similar to that of some of the AUS8 that is only hardened to that same range. But I won't know until I do an actual side-by-side comparison.