Materials
Hardness is the single number that shapes how a knife behaves. A harder blade holds its edge longer and chips more easily; a softer one dulls sooner and forgives a twist against a bone. Japanese kitchen steels sit high, German ones lower, and neither is the right answer in general — only for a particular pair of hands.
Two philosophies, five knives.
The Sanmeiho santoku, 18 cm (7.1 in) in 10Cr15MoV at a stated HRC 62, five-layer laminated, with a stated 12° edge. The Shan Zu santoku, 18 cm (7.1 in) with a Japanese 10Cr15MoV Damascus core and 67 forged layers, stated genuinely forged rather than etched. The Atumuryou 20 cm (7.9 in), VG-10 core at a stated 60 HRC.
Sixty and above means an edge that lasts through a great deal of work — and a blade that will chip if you lever with it or drop it on a tile floor.
The Wüsthof 20 cm (7.9 in) chef’s knife, forged from one piece, stated 58 HRC, with a laser-measured edge. The F. Dick boning knife, 15 cm (5.9 in) in X55CrMo14 at a stated 56 HRC, flexible with a curved blade.
Fifty-six is deliberately chosen on a boning knife: it has to flex against bone without snapping, and a 62 HRC blade in the same shape would break.
Hard: sharpen less often, sharpen with better stones, and treat the edge carefully. Tough: sharpen more often, sharpen on anything, and stop worrying about it.
Every hardness on this page is the maker’s claim, reported here as published. What makes a figure credible is whether it is consistent with the steel named beside it — and on these five, it is.
Where a harder, thinner blade genuinely cuts better and feels sharper for longer.
Where a tougher, softer blade shrugs off the small abuses of a busy kitchen.
Where edge retention shows: a hard blade still cuts cleanly when a soft one has dulled.
Where softer steel is markedly easier to bring back with basic equipment.
| The property | Harder steel | Softer steel |
|---|---|---|
| Edge retention | Longer | Shorter |
| Chipping | More likely | Less likely |
| Sharpening | Needs proper stones | Easy to restore |
| Forgiveness | Low | High |
Steel hardness changes what damage looks like. A soft blade rolls its edge and is straightened with a honing rod; a hard blade chips, and a chip has to be ground out. Neither is worse, but they need different responses and different tools.
Chipping is the specific hazard.
18 cm (7.1 in) blade · 10Cr15MoV Japanese steel · stated HRC 62 · 5-layer laminated · stated 12° edge
An 18 cm (7.1 in) santoku in 10Cr15MoV Japanese steel stated at HRC 62, with a five-layer laminated blade and a stated 12° edge — the hardest blade in this hub.
Best for: A cook who sharpens their own knives and will keep this one for vegetables and fish.
≈ $70
20 cm (7.9 in) blade · forged from one piece · stated 58 HRC · laser-measured edge · stainless
The top of this hub and the only knife in it that publishes a hardness: forged from a single piece of Wüsthof steel, stated at 58 Rockwell, with a laser-measured cutting edge.
Best for: The knife you sharpen for thirty years.
≈ $170
20 cm (7.9 in) blade · VG-10 Japanese core · stated 60 HRC · traditional Japanese technique · non-slip handle
A 20 cm (7.9 in) Damascus chef’s knife with a VG-10 core stated at 60 HRC — the best-known Japanese cutlery steel, named rather than implied.
Best for: Someone who wants VG-10 specifically, at a domestic price.
15 cm (5.9 in) · X55CrMo14 steel · stated 56 HRC · flexible · curved blade · ErgoGrip handle
The only knife in this hub that publishes both its steel designation and its hardness: X55CrMo14 at a stated 56 HRC, flexible, with a curved blade that lengthens the cutting stroke.
Best for: Skinning, trimming sinew and separating poultry.
≈ $23
18 cm (7.1 in) blade · Japanese 10Cr15MoV Damascus core · 67 forged layers · stated genuine, not etched
A Damascus-clad santoku with a 10Cr15MoV Japanese core and 67 forged layers, and a maker who states explicitly that the pattern is forged rather than laser-etched.
Best for: Someone who wants a beautiful knife and wants to know what is underneath the pattern.
≈ $90
The Rockwell C hardness scale. Kitchen knives run roughly from 52 to 63. Each point up means a longer-lasting edge and a more brittle one, and the difference between 56 and 62 is genuinely felt.
The softer one, by a wide margin. A 56 HRC blade takes an edge on almost any stone; a 62 HRC blade wants a diamond or a good ceramic, and rewards it with an edge that lasts.
You should not put any good knife in one — the detergent is abrasive and the blade knocks against everything. On a hard blade the chipping is worse and it is permanent.
Neither. Harder steel holds an edge longer and chips more easily; softer steel dulls sooner and forgives more. It is a trade-off.
It depends on how you treat knives and whether you will sharpen properly. Careful cooks with stones benefit from hard steel.
Usually twisting, prying, or hitting bone or frozen food. Hard steel chips where soft steel would simply bend.
Yes, with suitable stones. Basic pull-through sharpeners are not appropriate for it and can do damage.
It allows a thinner, more acute edge and keeps it longer, which is much of why it feels sharper. Any steel can be sharpened well.
Some traditional steels are less corrosion resistant and need drying immediately. Check what the maker says about the specific steel.
Good for: A cook who sharpens their own knives and will keep this one for vegetables and fish.
What it does best: Publishes both hardness and edge angle — HRC 62 and 12°
What it does badly: HRC 62 chips where a softer blade would roll — no bones, no frozen food
Good for: The knife you sharpen for thirty years.
What it does best: Publishes a hardness figure — 58 HRC — which nothing else in this hub does
What it does badly: The most expensive knife in this hub by a clear margin
Good for: Someone who wants VG-10 specifically, at a domestic price.
What it does best: VG-10 is the reference Japanese kitchen steel, and it is named
What it does badly: No edge angle published
Good for: Skinning, trimming sinew and separating poultry.
What it does best: Publishes steel designation AND hardness, which nothing else in this hub does
What it does badly: 56 HRC is soft by Japanese standards — frequent honing
Good for: Someone who wants a beautiful knife and wants to know what is underneath the pattern.
What it does best: Names the CORE steel, which is the part that cuts — most Damascus listings name only the layer count
What it does badly: No hardness figure, despite naming the steel
$23 – $50
4 models
$54 – $90
5 models
$90 – $170
4 models
Comparisons already online between two pans from this guide or this aisle.
The pans here are drawn from the catalog of this site. Specifications come from the maker and from the Amazon product page; prices are what Keepa recorded on the date below, and both move. Order is set by declared specifications, by stated strengths against stated limits, and by price. Nothing here has been cooked with by us, and no claim to the contrary is made.
Last checked on
Prices quoted in these summaries are dated readings. The live price is shown next to each product.
Cookware sets, knife blocks and cast iron swing by thirty dollars or more across the year, and the biggest "discounts" often land at prices the same model sold for six weeks earlier. UniverTrack tracks the real price history across retailers, spots fake reductions, and alerts you when it is genuinely the moment to buy.
