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Knife steel selection in a working knife shop

Knife steel

52100 knife steel

A fine-grained, chromium-alloyed bearing steel valued for exceptionally keen, stable edges and toughness that outperforms plain carbon steels like 1095.

Also known as

  • SAE 52100
  • AISI 52100
  • E52100
  • Bearing Steel

At a glance

How 52100 behaves

The four meters are relative to the rest of the database. Composition is the published nominal analysis, not a mill certificate for your bar.

Working properties

Toughness
4 / 5
Edge retention
3 / 5
Corrosion resistance
1 / 5
Ease of grinding
4 / 5
Composition
  • Carbon (C)0.98–1.10%
  • Chromium (Cr)1.30–1.60%
  • Manganese (Mn)0.25–0.45%
  • Silicon (Si)0.15–0.35%
Best uses

A favorite for straight razors, high-performance EDC and kitchen knives, and any blade where a stable, keen edge matters as much as toughness. Browse more entries in the Knife Steel Database, and see the Heat Treating Guide for the full stage-by-stage process.

Sources
  • Standard AISI/SAE 52100 specification
  • Larrin Thomas, How to Heat Treat 52100, Knife Steel Nerds
  • New Jersey Steel Baron 52100HC heat treat data.

At the bench

What each property means for this steel

Open the property you are worried about. Every note is written for the blade in your hand, not for a spec sheet.

Toughness
Noticeably tougher than plain carbon steels like 1095 or O1, thanks to its very fine, clean grain structure inherited from its bearing-steel origins.
Edge retention
Chromium carbides give it a real step up in wear resistance over plain carbon steel, and its fine grain lets it hold a very keen edge, though it is still well short of high-carbide stainless steels.
Corrosion resistance
The 1.3-1.6% chromium is there for hardenability and carbide structure, not corrosion resistance. Treat it like a carbon steel and keep it oiled and dry.
Grinding and machinability
Grinds and forges well, though the chromium carbides make it slightly slower to work than simple steels like 1084 or 1075.
Quench and temper decide whether 52100 gives you the numbers above.

The full reference

More on 52100

52100 is a high-carbon, chromium-alloyed bearing steel that made its way into knifemaking because of its exceptionally fine, clean grain structure. That fine grain lets it take an extremely keen, stable edge, and its chromium content gives it better toughness and hardenability than plain carbon steels like 1095, while still falling short of true stainless corrosion resistance.

52100 FAQ

Is 52100 stainless?

No, its chromium is there for hardenability and carbide structure, not corrosion resistance. It needs the same regular oiling and drying as other carbon tool steels.

Gloved hand presses a folded towel onto the spine side of a wood-handled knife lying on a black nonslip mat with water drops.

Is 52100 hard to sharpen or grind?

No, it is easy to moderately demanding to work with, more belt wear than simple carbon steels but far less than premium CPM stainless steels. See the full grinding and sharpening guide.

Gloved hand holds a knife handle while bare fingers guide the blade on a wet sharpening stone in a wooden holder.

What is 52100 best used for?

Straight razors, high-performance EDC and kitchen knives, and any blade where a stable, keen edge matters as much as toughness.

Straight razor, kitchen knife and small fixed utility knife rest on separate black pads on a worn bench, wood board behind.

How does 52100 compare to 1095?

52100 is tougher, has better edge retention, and takes a more stable edge, thanks to its fine grain and chromium addition. See the full breakdown: 52100 vs 1095.

Satin knife blade with a bright narrow edge bevel on a worn leather pad, beside a bench stone and a leather strop.

Head to head

Compare steel data for 52100

Every matchup 52100 appears in, dimension by dimension.

Browse the steel database

Keep reading

Guides that use this steel

More in this topic

Same bench

Grind 52100 on a machine that holds still

Whatever the steel, the grind is only as flat as the platen behind it. I machine the parts, hand-assemble and test Torus grinders in Sterling, Illinois.

See the whole shop
  • Classic aluminum 2x72 grinder, side view with flat-platen tool arm and yellow Safety Rules label, on black with a purple glow

    Torus 2×72 Classic Aluminum Belt Grinder

    Prior-design aluminum chassis, 90-degree tilt and 1.5-inch tooling arms.

    Starts at$1,095View

One-man shop

Thinking about 52100?

Tell me what the blade is for and how you heat treat. I will tell you whether this is the steel I would use, and what I would use instead.

Ask Rich a questionRun the Steel Selector