I only saw it here so far.
http://www.jatagan.eu/en/make-a-knife/m390-pm/
If you look at the priced it's certainly priced like a supersteel. (you can switch currencies in the upper right)
Google translate came up with this:
Steel M390PM is stainless steel produced by powder metallurgy. Steel in the calcined state of well-machining, after heat treatment has excellent resistance to wear, easily polished. Steel is a highly homogeneous structure with very fine carbides, after proper heat treatment has excellent resistance to wear and tear - durability of the blade (greater than 19 573 / D2). Steel has high toughness (resistance to breakage).
Composition: 1.90% C, 0.70% Si, 0.30% Mn, 20.0% Cr, 1.0% Mo, 4.0% V 0.6% V
Heat treatment: austenitizace in a protective atmosphere from 1070 to 1150 ° C in a vacuum from 1120 to 1200 ° C. Hardness in turbidity after 60 -62 HRC during cooling in air.
After hardening is recommended deep freeze
Tempering: 150 to 400 ° C, the resulting hardness of 56-58 HRC
Maximum wear resistance achieved after quenching from 1150 ° C and 2 + podmraení tempering cycles at 540 ° C, 58-62 HRC (Attention, slightly reducing the corrosion resistance).