You should talk with @PEU , I think he's in Buenos Aires, and may be able to tell you what steel is available locally. You should be able to find at least 4140.(...)Maybe I forgot to mention that I was in a very remote location (a far away little village in Patagonia), so I guess the "buy a good steel for 20 bucks" and "send it to HT" pieces of advice didn't apply to me at all. My bad for not letting you know.
(...)