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CPM 15V is a non-stainless powder steel for readers who put abrasive edge retention near the top of their priorities. It is a specialized choice for repeated slicing, with less emphasis on toughness and corrosion resistance. Before choosing it, consider both the cutting you do and the equipment you will use to maintain the edge.
What Is CPM 15V?
CPM 15V is a high-vanadium powder metallurgy tool steel. The selected specification lists 14.5% vanadium; the grade name is not an exact percentage declaration. Its large amount of hard carbide supports wear resistance, but the steel is not stainless.
Performance Ratings
For the science, we turn to Dr. Larrin Thomas of Knife Steel Nerds, who has kindly allowed us to share his ratings here.
| Property | CPM 15V |
|---|---|
| Abrasive edge retention | |
| Toughness | |
| Corrosion resistance |
Heat treatment, hardness and geometry affect actual knives.
Explore CPM 15V’s Tradeoffs
Choose a steel above to highlight its position and see all three exact ratings below. The full map fits your screen.
High-alloy steel
CPM 15V
- Abrasive edge retention
- 10
- Toughness
- 3.5
- Corrosion resistance
- 4
All 48 rated materials. Numbers group steels at identical coordinates; colors describe stainless classification, not corrosion scores. Neither direction means a universally better knife.
CPM 15V’s ratings are shown above. Enable JavaScript to select another steel, or browse the full ratings table.
Why Choose 15V for Edge Retention?
15V scores 10 for abrasive edge retention. That places it above wear-resistant stainless choices such as S90V, which scores 9, in this framework. It is worth considering when a knife repeatedly wears dull through abrasive slicing.
The advantage is less relevant if your cutting is occasional or if your edge normally fails by chipping. The material being cut, the grind and heat treatment all influence actual edge life, so the rating should not be read as a guaranteed sharpening interval.
See the S90V profile if you would trade some abrasive edge retention for stainless care.
Wear Resistance Is Not Chip Resistance
Its toughness rating is 3.5. That is the compromise to keep in mind alongside the wear rating: a blade that resists abrasion can still suffer edge damage. Use a grind and edge angle suited to the work, and consider a tougher steel if avoiding chips matters more than extending abrasive cutting life.
Sharpening and Corrosion Care
Diamond or cubic boron nitride (CBN) abrasives are useful choices for 15V's vanadium-rich carbide structure. Repairs and major bevel changes deserve an appropriately coarse starting grit. Regular touch-ups can reduce the amount of work compared with waiting for a badly worn or damaged edge.
With a corrosion-resistance rating of 4, 15V needs non-stainless care. Clean and dry the blade after use and protect it during storage with an appropriate oil. Use a food-safe product where needed. A coated blade still has an exposed cutting edge.
Is CPM 15V Right for Your Use?
Choose 15V when you have a clear need for abrasive wear resistance and are willing to maintain a non-stainless blade. It is less compelling as a general upgrade for a lightly used knife. Check the particular maker's heat-treatment information and blade geometry, and avoid assuming that one well-known treatment describes every 15V knife. Our knife steel guide puts those tradeoffs side by side.
Composition
Our steel composition guide explains what the elements do and how to read these values.
CPM 15V: Niagara typical CPM 15V chemistry. Niagara Specialty Metals: CPM 15V.
| Element | CPM 15V |
|---|---|
| Carbon (C) | 3.4% |
| Chromium (Cr) | 5.25% |
| Vanadium (V) | 14.5% |
| Molybdenum (Mo) | 1.3% |
| Manganese (Mn) | 0.5% |
| Silicon (Si) | 0.9% |
