W75 and UHC steel properties?

[Gator97]

Hi All,

I've added those two to the Interactive Knife Steel Chart. However, all I have for both is the carbon content. W75 is supposedly Krupp steel, but there is no mentioning of it on their site.
If anyone has more precise information about those I'd really appreciate help.

 

[Gator97]

Bump.
It's been 6 years and I still can't find exact composition for this alloy. Roselli uses(used) it in their pukkos, if anyone knows anything I'd appreciate help.