10Cr15CoMoV in stock
Yes, it is the premium tier of the Chinese GB steels. 10Cr15CoMoV runs about 1.05% carbon, 15.5% chromium, 1.5% cobalt, 1.2% molybdenum and 0.3% vanadium at 58 to 63 HRC. The cobalt and vanadium additions give it noticeably better wear resistance and hardness potential than 8Cr13MoV or 9Cr18MoV.
Cobalt supports higher attainable hardness and refines the response to heat treatment. Combined with molybdenum and vanadium it lifts this grade clearly above the rest of the Chinese GB family.
The composition is broadly comparable in intent to VG-10, which is also a cobalt-alloyed high-carbon stainless.
Edge retention is very good and corrosion resistance is very good. It is also described as relatively easy to sharpen for its hardness, which is a genuine advantage over high-vanadium powder steels at similar edge-holding.
It appears as a step-up feature steel on CIVIVI and SENCUT premium lines, which is where most buyers will meet it.
It sits between the budget grades and the Western powder steels on both price and performance, and it is a sensible place to land if you want most of the performance without a premium-steel price.
As always, the maker's heat treat matters as much as the alloy name.
The grid below shows 10Cr15CoMoV listings from Civivi, chosen from the catalog when this answer was written. Each one carries 10Cr15CoMoV in its own specification table, and its price is read from the live catalog every time the site is built.