took a bit of digging and translating, but 4034, or Remanit 4034 appears to be a European steel designation (had to translate a bunch of tech documents from German /shrug)
Also known as X46Cr13, this is a low allow basic stainless steel (Really, really low alloy
) it's composition is:
Carbon: .43 to .50%
Chromium: 12.5 to 14.5#%
and that's it. Considering it takes a minimum of 13% Cr to get a stainless designation, and a minimum of .4% carbon to make a halfway decent knife steel, I'd say it's about the low end of the spectrum. Even 420HC, which in my personal opinion is NOT a good blade steel (unless you want a dive knife) has more carbon, more Chromium, and vanadium, silicon and manganese for additional grain refinement, wear resistance and hardening properties
It's better than 420J2, which is the steel used in cheap replica "fantasy" weapons....but that's about it. For reference, 440C (A very good steel) is X105CrMo17 in german steel databases.