I see no reference to H1 in this list. Perhaps Sal’s comments on H1’s hardness(es) should be included?
Responding in BladeForums (post #16 in https://www.bladeforums.com/threads/h1- ... ost4484958
), Sal said:
“When the foundry rolls the H1, they roll to two different hardness, we end up with 58 for the blade material and considerably lower spec for the lock material. Not meaning to be disrespectful, but the two hardnesses are controlled by the rolling process.
“Dick Barber, metallurgist for Crucible steels was curious as to why the H1 steel was testing so well and wanted to do metallurgical testing on the material. We sent them samples and they did their tests. In their micro hardness testing, they found the H1 was differentially hardening. Their explanation was as I described.
“The were getting over 60 (64/65 as I remembber the report) at the edge of the blade, 58 at the spine and various hardness in between as they went from the spine to the edge.
“The serrted edge version was higher (68 as I remember) which Mr. Barber attributed to the extra "work" (heat) required to serrate the edge over just sharpening as on the plain edge.”