Limited Edition Collector Blades
Knife Edge Retention: What It Is and What Affects It
What is edge retention? Edge retention is how long a knife stays sharp in use before it needs sharpening. It depends mostly on the steel's hardness and composition, the edge angle, and how you use and care for the knife. If you want maximum edge retention, harder Japanese steel is the answer: the Chef's Knife 8", Shogun Series, Elite ($129) has an AUS-10V core at 62+ HRC with an 8–12° edge. If you'd rather trade some retention for toughness and easy touch-ups, German steel like the Chef's Knife 8", Gladiator Series, ELITE, NSF Certified ($79) at 54–56 HRC is the forgiving choice.
What affects edge retention
| Factor | Effect on retention | Tradeoff |
|---|---|---|
| Hardness (HRC) | Higher holds an edge longer | Harder steel can chip more easily |
| Steel composition | Carbides (from carbon, vanadium, etc.) resist wear | Can be harder to sharpen |
| Edge angle | Thinner edges cut better | Thinner edges need harder steel to stay stable |
| Cutting surface | Wood or plastic boards protect the edge | Glass, stone and ceramic boards dull it fast |
| Technique | Slicing beats chopping down hard | Twisting or prying rolls the edge |
| Care | Hand washing and honing extend it | Dishwashers and drawers dull and chip it |
Hardness: the biggest factor
Hardness is measured on the Rockwell C scale (HRC). Most German-style kitchen knives sit in the mid-50s, while Japanese-style knives often run 60 or higher. A harder edge deforms less as it meets the board and the food, so it stays sharp longer. See what the Rockwell hardness scale means and the best hardness for kitchen knives.
The catch is toughness. Softer steel bends rather than chips; you can straighten a rolled edge with a honing rod in seconds. Harder steel resists rolling but is more likely to chip if it hits bone or a frozen item, or if it's twisted.
Edge angle
A thinner edge (smaller angle) cuts with less force but has less metal behind it. That's why hard Japanese steels are paired with acute angles like the Shogun Series' 8–12°, while tougher German steel is sharpened to a sturdier 16–18° on the Gladiator Series. Read more in our knife sharpening angle chart.
Retention vs toughness: which do you need?
| If you... | Prioritize | Dalstrong option |
|---|---|---|
| Do precise slicing, vegetables, fish | Edge retention | Shogun Series 8" Chef's Knife (AUS-10V, 62+ HRC) |
| Chop hard squash, work near bone, cook fast | Toughness | Gladiator Series 8" Chef's Knife (X50CrMoV15, 54–56 HRC) |
| Want low maintenance | Toughness and easy honing | Gladiator Series plus a honing rod |
How to make any knife hold its edge longer
- Use a wood or soft plastic board. Never glass, marble or plates.
- Hone often. A few strokes on a ceramic honing rod ($79) realign the edge between sharpenings.
- Don't scrape food with the edge. Flip the knife and use the spine.
- Hand wash and dry right away. See why not the dishwasher.
- Store it protected in a sheath, block or magnetic strip, not loose in a drawer.
- Use the right knife. A cleaver for bone, not your thin chef's knife.
- Sharpen when honing stops working, on a whetstone like the #1000/#6000 Whetstone Set ($59).
For timing, see how often to sharpen kitchen knives.
Our picks
Chef's Knife 8", Shogun Series, Elite ($129). Spec sheet: Japanese AUS-10V core, 62+ HRC, 8–12° edge, 66-layer Damascus or hammered finish. For maximum edge retention.
Chef's Knife 8", Gladiator Series, ELITE, NSF Certified ($79). Spec sheet: German X50CrMoV15 steel, 54–56 HRC, 16–18° edge, NSF certified. For toughness and easy maintenance.
Honing Rod 10", Ceramic Coating ($79). A 10" honing rod with a ceramic coating.
FAQ
What is edge retention in a knife?
How long the blade stays sharp before it needs sharpening. Hard steel holds an edge longest; the Dalstrong Shogun Series 8" Chef's Knife ($129) uses AUS-10V at 62+ HRC with an 8–12° edge.
Does harder steel hold an edge longer?
Generally yes, but harder steel can be more prone to chipping.
Which is better, edge retention or toughness?
It depends on use. Precise slicing favors retention; heavy chopping and work near bone favor toughness.
What dulls a knife fastest?
Hard cutting surfaces like glass or stone, dishwashers, and storing knives loose in a drawer.
Does honing improve edge retention?
Honing doesn't change the steel, but realigning the edge regularly keeps it cutting well longer between sharpenings.
