Dick Barber told me that it gets 20-25 ft. lbs. at 60 Rc. I believe the 25-28 ft. lbs. is for 58 Rc. 440C gets 26 ft. lbs. at 56 Rc. 154CM would have to be <58 to get 25-28 ft. lbs. My 16 ft. lbs. at 60 Rc for 154CM is a guess based on multiple sources, though there is one somewhat questionable source in an old Knifeforums thread that listed 154CM at 16 ft. lbs. at 60 Rc, and it seems consistent with other data.
Larrin, I want to note a few issues here which have to do with experimental data in general which you have a really skewed viewpoint of which isn't helped by the people feeding you information. All experimental data is prone to errors in measure, this is actually a fundamental law of physics, any observation introduces uncertainty. Impact tests are generally around the 10% level assuming Hitachi's data is competent.
Now add to that the batch data composition, look at the tolerances in the steel and see how much you would expect that to effect the results. Now look at effects in heat treating, I am not talking about different recipies but just general time and temperature variance for the exact same scheme. Now if you add all of these up would you ever consider 16 vs 25 ft.lbs was significant.
No, they are not which is why Crucible's origional assertion that they are all the same is valid because they are not significantly different. You never compare experimental data using a simple equality, you always have to use ranges.
I have no reason to argue with Crucible's testing.
Larrin you are supposed to look for them. This is science not religion. You don't accept something because someone specific says it. That completely destroys all credibility in the arguement and produces nothing but hype. You are supposed to ignore the speaker, look at what they say, see if it makes sense, check with other sources. If they are selling something then at the barest minimum look at what is said by those that compete with them and the unbiased evaluations relevant to that field.
Just look at what is claimed, L6 for example is about 4x the izod toughness of M2 (actually less at common knife hardness for each). Forget that it is said by whoever you spoke to you as are never supposed to give that any consideration anyway. If John Smith, a complete novice knife maker asked you he wanted a stainless which was related to 154CM in toughness as L6 was to M2. You would really suggest S30V?
-Cliff
