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The Reference Guide for Serious Cooks

The Culinary
Knife Bible

49 blade steels. Every construction method. Every blade shape. The complete reference for home cooks and knife obsessives, from first purchase to custom forge.

About This Guide

What This Is—And What It Isn't

Most knife content is one of two things: marketing copy dressed up as journalism, or gear-nerd gatekeeping that assumes you already know what you're looking for. This is neither.

The Culinary Knife Bible started from a single honest question: why do some knives make cooking feel effortless while others feel like work? The answer turns out to be complicated, and almost nowhere is it explained straight. Most buyers are told a brand story. Reviews tell you a knife is “well-balanced” without explaining what that means. This guide explains the metallurgy, the geometry, and the craft behind it. Not to sell you anything. Because the information exists and deserves to be in one place.

Who This Is For

Home cooks who've gotten serious about their tools and want to understand them, not just own them. Knife collectors mapping the landscape before buying. Culinary students who want the real science behind what their instructors say.

Anyone who has stood in a kitchen store holding a $400 Japanese gyuto, wondered what exactly they'd be paying for, and couldn't get a straight answer from the person behind the counter.

You don't need a background in materials science. You do need to be comfortable with “it depends” as an honest starting point, and with the idea that the question “what's the best steel?” has a real answer, not just a marketing one.

Why This Structure

Steel first: because every other variable matters less than what the metal can do and how it holds an edge. Blade geometry, grind, and handle all matter. They all matter less than steel and heat treatment.

Then construction: because understanding forged vs. stamped, San Mai, and heat treatment tells you why two knives with the same steel spec can perform completely differently.

Then shapes, anatomy, and types: because the language of knives is surprisingly specific, and knowing it makes you a more capable buyer and a better cook.

Care and sharpening last: because the most technically impressive knife in the world becomes mediocre without it.

How to Use It

The Steel Comparison Index is your starting point: filter and sort by what matters to you, then follow the link to a steel's deep-dive entry when one catches your eye. The Steel Sciencesection explains the underlying metallurgy for those who want to understand why, not just what. Every other section is reference material: read it when you need it, skip it when you don't. Nothing here assumes you'll read it front to back. It's built to be useful at whatever depth you're at today.

Steel Index

The Steel Comparison Index

Steel is the most consequential decision in a kitchen knife, more than the brand, the price, or whether it was forged by hand or stamped from sheet stock. The steel determines how long the edge lasts, how it fails when it dulls, whether it stains when you leave it wet, and how much effort it takes to bring it back.

Every steel in this guide is rated across five dimensions. They're correlated (you can't fully optimize all five simultaneously), and the tradeoffs between them are the actual story of knife steel science:

  • Edge Retention: how long a sharpened edge stays sharp under normal kitchen use. Correlates strongly with hardness (HRC), but carbide structure matters just as much.
  • Toughness: resistance to chipping, cracking, and microchipping under lateral force or impact. In most conventional steels this trades directly against edge retention.
  • Ease of Sharpening: how readily the steel responds to whetstones and honing rods. The hardest, most wear-resistant steels are the best to have on your knife, and the most effort to bring back.
  • Corrosion Resistance: resistance to rust, staining, and pitting in a normal kitchen environment. A rating of 5 means you can leave the knife wet overnight without consequence. A rating of 1 means active patina management after every wash.
  • Price: typical retail range for finished knives in this steel. Reflects production method, artisan labor, and market positioning.

The most important thing the table can't show: heat treatment is as important as steel choice. Two knives with identical steel specs, from different makers, can perform completely differently depending on heat treater precision. A poorly heat-treated CPM MagnaCut can be outperformed by a well-executed 14C28N. The deep-dive entries explain what each steel requires from its heat treatment.

Showing 49 of 49 steels

SteelFamilyHRCEdgeToughnessSharpenCorrosionHoning MethodOriginPrice
CPM MagnaCutPM martensitic stainless60–65ExceptionalCeramic / stropUSAPremium
ElmaxPM stainless60–62ExcellentStrop / ceramicSwedenPremium
SG2 / R2PM stainless62–64Very GoodStrop onlyJapanPremium
ZDP-189PM ultra-high carbon stainless65–67GoodStrop onlyJapanPremium
Aogami Super (Blue Super)Reactive high-carbon63–67NoneSmooth rod / stropJapanPremium
Aogami #1 (Blue #1)Reactive high-carbon62–65NoneSmooth rod / stropJapanMid
Shirogami #1 (White #1)Reactive high-carbon62–65NoneSmooth rod / stropJapanMid
S35VNPM stainless60–61GoodCeramic / stropUSAPremium
CPM-154PM stainless58–60GoodCeramic / stropUSAMid
ATS-34Conventional stainless58–61GoodCeramic / stropJapanEntry
VG-10Co-alloyed stainless60–62Very GoodStrop / ceramicJapanMid
VG-MAXCo-alloyed stainless60–61Very GoodStrop / ceramicJapanMid
Nitro-VNitrogen-enhanced stainless61–63Very GoodCeramic / stropGermanyMid
Silver Fox SF100Conventional stainless61–63Very GoodCeramic / stropUKMid
52100High-carbon bearing steel60–64PoorSmooth rod / stropUSAMid
D2 / K110Semi-stainless tool steel60–62ModerateCeramic / stropUSA / AustriaMid
Aogami #2 (Blue #2)Reactive high-carbon61–64NoneSmooth rod / stropJapanMid
Shirogami #2 (White #2)Reactive high-carbon61–64NoneSmooth rod / stropJapanMid
CD#1PM tool steel60–63ModerateStrop / ceramicUSAPremium
CTS-BD1NNitrogen-enhanced stainless60–63ExceptionalCeramic / stropUSAEntry
AUS-10Conventional stainless58–60GoodCeramic / smooth rodJapanEntry
AUS-8Conventional stainless57–59GoodSmooth rod / ceramicJapanEntry
AEB-LConventional stainless61–64Very GoodSmooth rod / stropSwedenMid
FC61Conventional stainless60–62Very GoodSmooth rod / stropSwedenMid
10Cr15CoMoVConventional stainless58–60GoodCeramic / smooth rodChinaEntry
440CConventional stainless58–60Very GoodCeramic / stropUSA / GermanyEntry
ACUTO440Conventional stainless58–61Very GoodCeramic / smooth rodJapanEntry
N690Co-alloyed stainless58–62Very GoodCeramic / smooth rodAustriaEntry
Nitro-BNitrogen-enhanced stainless58–62Very GoodSmooth rod / ceramicGermanyEntry
Sandvik 14C28NNitrogen-enhanced stainless58–62Very GoodSmooth rod / ceramicSwedenEntry
15N20Carbon Damascus layer steel60–62NoneSmooth rod / stropUSAMid
8670High-carbon nickel alloy57–61NoneSmooth rod / stropUSAMid
Damascus (5160/4340)Pattern-welded Damascus56–60NoneSmooth rod / stropUSAMid
1080High-carbon56–60NoneSmooth rod / stropUSAEntry
1095High-carbon56–60NoneSmooth rod / stropUSAEntry
AISI 5160Chrome-vanadium spring steel57–60NoneSmooth rod / stropUSAEntry
SK-4 / KigamiReactive high-carbon58–62NoneSmooth rod / stropJapanEntry
9Cr18MoVConventional stainless58–60GoodCeramic / smooth rodChinaBudget
Zwilling FRIODURProcess-hardened stainless57–58GoodSmooth steel rodGermanyEntry
X50CrMoV15 / 4116Conventional stainless56–58GoodSmooth steel rodGermanyBudget
AISI 4340Ni-Cr-Mo alloy steel55–60NoneSmooth rod / stropUSAEntry
440AConventional stainless55–57Very GoodSmooth rod / ceramicUSABudget
5Cr15MoVConventional stainless54–56GoodSmooth rod / ceramicChinaBudget
7Cr17MoVConventional stainless56–58GoodSmooth rod / ceramicChinaBudget
3Cr13Conventional stainless50–54GoodSmooth rod / ceramicChinaBudget
Wanbasian StainlessUndisclosed stainless50–54GoodSmooth rodChinaBudget
316 / 316LAustenitic stainless25–30—Exceptional—International—
SUS1A-1JIS cutlery grade30–35—Very Good—Japan—
SUS430Ferritic stainless30–35—Very Good—Japan—