I lost the other thread, but IIRC it had a reference/pic of a Bohler Bo30 barrel as well as a Bo32...I believe these indicate different steel alloys, but I don't have a reference that lists the composition of Bohler-named steels. But they would respond differently.
Alloys are interesting. If you make and name a certain alloy and copyright the name, then anyone who markets their steel and uses your name has to pay you a royalty. CPM154, 530V, and BG-42 are all good examples (all used in knife blades). In England, Reynolds 531 is a common structural alloy for race cars. You can make the steel/alloy and even sell it, but not use another mfg's brandname. I actually buy my steel, aluminum, copper, and Delrin [there's another brandname!] from a Krupp subsidiary, and they are careful not to infringe on other makers brandnames...
...But I digress...
