I'm curious about this stuff. I have two on preorder from Tom Berry. I'm looking forward to giving this steel a workout and I have high hopes for it considering the financial problems Crucible has had in the recent past.
Here is the description from the Cartech.com website:
Carpenter CTS-XHP Alloy (Micro-Melt® 440-XH® Alloy)
(Nominal Analysis)
1.60 C, 0.50 Mn, 0.40 Si, 16.00 Cr, 0.35 Ni, 0.80 Mo, 0.45 V, Bal. Fe
Air hardening, high carbon, high chromium, corrosion resistant alloy which can be described as either a high hardness Type 440C stainless steel or a corrosion resistant D2 tool steel. Possesses corrosion resistance equivalent to Type 440C stainless but can attain a maximum hardness of 64 HRC, approaching that of D2 tool steel. Now available in strip product form.
This proprietary alloy is in the Carpenter CTS™ family of alloys that offer superior edge retention and surface finish, an ability to be machined to a fine edge, and consistent heat-treatability from lot to lot. Consider CTS alloys for many blade applications including commercial food processing, paper processing, textile, packaging, recycling/refuse, kitchen knives, hand tools, scissors/shears, shaving razors, sport/hunting knives, ice skates, military/defense, law enforcement, salon blades and various surgical/medical applications.