Call for Charpy toughness samples

[Storm W]

Bohler ranks their K600 as tougher than their S1, which they rate as being similar to their high V A8 Mod (WP7V), and both tougher than their low V A8 Mod (NZ4). Crucible rates their S5 as tougher than S7. Uddeholm rates their Unimax as tougher than Calmax, and both of those as tougher than their A8 Mod. Ultrafort is a completely different type of steel being maraging, the lack of carbon may give it an advantage I’m not sure. So just piece all of that together and there you go. Which one is the “toughest” may not really matter. Availability, potential hardness, and wear resistance may be better differentiators in that group.

Would the maraging steel make for a good laminated blade? How hard if core would work for something like that? I imagine that getting the core as thin as possible would be important although it might be impossible to heat treat them together.