Brook Turner

52100 is the most respected non-stainless steel in the Western kitchen knife tradition — a chrome-bearing alloy that began life as a ball-bearing grade and has, over decades of custom-maker use, become a reference for what a thoughtful carbon steel should feel like. Roughly one percent carbon and one and a half percent chromium put it just below the stainless threshold but well within the territory where chromium meaningfully refines grain and tightens the carbide structure.

A good 52100 kitchen knife typically lands between 62 and 63 HRC. It sharpens with little drama on almost any stone, takes an edge as clean as the simple carbons, and holds it for longer thanks to those Cr-rich carbides. Toughness is excellent for the hardness — published comparative data positions it as one of the better-balanced carbon steels available, especially when the heat treat includes the cryogenic treatment that this steel rewards. It will patina, but more politely than a white paper, and it is forgiving enough that a single rinse-and-dry routine is usually enough.

52100 is the canonical choice for cooks who love carbon-steel feel but want a touch more refinement than 1084, W2, or even 80CrV2. It dominates the American custom scene and shows up across high-end stock-removal work from a wide range of forging custom shops. Among the makers Modern Cooking carries, Fredrik Spåre, Brook Turner, and Nordquist Designs work in 52100. Note that it is the same alloy as German 1.3505 and the European 100Cr6; if a maker tells you they have used one, they have used all three.

26C3 is one of the most quietly important kitchen knife steels of the past decade. Originally engineered by Sandvik as a razor steel — its lineage runs straight to UHB-20C — it carries about 1.25 to 1.30 percent carbon, very low manganese and sulphur, and a small chromium addition to control grain size. The result is a steel that hardens cleanly into the mid-sixties HRC while retaining genuinely useful toughness for its hardness, an unusual combination outside the powder-metallurgy world.

For the cook, 26C3 sharpens the way the best Japanese white papers sharpen — a quick burr that wipes off cleanly, and a polished edge that holds a screaming apex without microchipping. Toughness at 64 HRC is comparable to or better than 52100 at the same hardness in published testing, which is part of why the Larrin-Thomas-and-friends generation of makers gravitated to it; it lets you grind thinner without paying for it later. Like all clean carbons, it patinas willingly and benefits from a wipe between tasks.

26C3 has become something of a default among UK and European bladesmiths who want a no-compromise carbon edge, and it is the chemical parent of SheffCut, which adds a sliver of niobium to refine grain further. Among the makers Modern Cooking carries, Birch & Bevel, Karol Karyś, Jonas Johnsson, Tobias Heldqvist, Brook Turner, and Fredrik Spåre work in 26C3. It is one of the few non-stainless steels you can recommend to a cook coming from VG-10 without apology.