The Japanese Knife Steel Comparator
Every kitchen steel is a set of trade-offs. This tool plots them all on the one that matters most, how long the edge lasts versus how easily you can bring it back, then lets you sort every property side by side. Ratings come straight from our steel guide.
Ratings are relative and simplified to a 1 to 5 scale for comparison. Hover or tap any steel for its full profile. Steels that share a spot are nudged apart slightly.
| Steel ▲▼ | Family ▲▼ | HRC ▲▼ | Edge Retention ▲▼ | Toughness ▲▼ | Rust Resistance ▲▼ | Ease of Sharpening ▲▼ | Best For ▲▼ |
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These 1 to 5 ratings compress real metallurgy into a picture, so treat them as a guide, not gospel. Heat treatment by a given maker moves any of these numbers, and "best" depends entirely on how you cook and maintain a knife. The clearest pattern is the trade-off line: steels in the top-left (like ZDP-189 and Aogami Super) hold an edge a very long time but fight you on the stone, while steels in the bottom-right (AUS-8, Ginsan) come back to sharp in minutes. There is no single winner, only the right fit. Full context lives in the steel guide.
What each axis and size means
Edge retention is how long the knife stays sharp in use. Ease of sharpening is how quickly and forgivingly it comes back on a whetstone. These two pull against each other: the hardest, longest-lasting steels are almost always the slowest to resharpen, which is the single most useful thing to understand before you buy.
Bubble size is rust resistance. The carbon steels (Shirogami, Aogami, Aogami Super) are the small red bubbles low on corrosion; they reward maintenance with a keen edge but will rust if neglected. Toughness (resistance to chipping) is in the table, since a fourth axis on the chart would muddy it. For the deeper story on where these steels come from, see the steel family tree.
Found your steel?
Read the full guide, trace the family tree, or see the two steels we chose for our own knives and why.
The Steel Guide The Steel Family Tree Why We Chose AUS