Elmax Steel Explained: Properties, Performance, and Comparison

Elmax is one of the most talked-about powder metallurgy steels in the knife world — and one of the least understood. Made by the Swedish steelmaker Uddeholm, Elmax shows up on premium blades where edge retention matters most, and its reputation for holding an edge is deserved. But it also has trade-offs that matter for real-world carry. Here is what Elmax actually is, what its numbers mean, and how it compares to the other super steels you will see on the market.

What Is Elmax Steel?

Elmax is a high-alloy cold-work tool steel produced by Uddeholms AB of Sweden, part of the Böhler-Uddeholm group. It is manufactured using powder metallurgy, a process that atomizes molten steel into fine powder and re-consolidates it under heat and pressure. The payoff is an exceptionally uniform microstructure with fine, evenly distributed carbides — the same process family that produces M390, S90V, and 20CV. Uddeholm positions Elmax as a tool steel for complicated shapes, and the knife industry adopted it for blades that need to keep cutting long after other steels have dulled.

Composition

Uddeholm's official datasheet for Elmax lists this chemical composition:

Element	Content (%)
Carbon (C)	1.70
Silicon (Si)	0.80
Manganese (Mn)	0.30
Chromium (Cr)	18.00
Molybdenum (Mo)	1.00
Vanadium (V)	3.00

What the Numbers Mean

• 1.70% carbon — very high, which drives hardness and carbide volume. Elmax is routinely heat treated into the HRC 60-plus range for knife blades.
• 18% chromium — the same ballpark as stainless steels. This is what gives Elmax its corrosion resistance, well above most high-carbon tool steels.
• 3% vanadium — forms hard vanadium carbides that are the backbone of Elmax's edge retention.
• 1% molybdenum — contributes hardenability and wear resistance.

Because the powder metallurgy process keeps those carbides fine and uniform, Elmax can hold high hardness without the brittleness you might expect from such a highly alloyed steel.

Property Profile

Uddeholm's own product ratings for Elmax SuperClean describe its personality in one glance:

Property	Uddeholm rating
Wear resistance	90%
Polishability	80%
Corrosion resistance	60%
Toughness	40%

Read those numbers the right way and Elmax is exactly what its reputation says: a wear-first steel. It is not a toughness monster and it is not the most corrosion-proof stainless — it is a steel built to hold an edge.

Elmax in the Field

• Edge retention: excellent. This is the steel's headline attribute — it stays sharp through heavy cutting sessions.
• Sharpening: the flip side. High wear resistance means more work on the stones, and fine carbides respond best to fine grits. A guided system or a careful hand pays off.
• Corrosion resistance: genuinely good for daily carry thanks to the 18% chromium, though it is not fully stainless-grade in harsh environments.
• Toughness: adequate for normal EDC use, but not the steel to pick for hard-impact chopping duty.

Elmax vs M390 vs S35VN

Steel	Edge retention	Toughness	Corrosion resistance	Best for
Elmax	Very high	Moderate	Good	Edge-focused EDC folders
M390	Very high	Moderate	Excellent	Premium all-round folders
S35VN	High	Good	Good	Balanced everyday knives

Elmax and M390 are close cousins in the premium tier — both powder metallurgy steels with outstanding edge retention. M390 edges ahead on corrosion resistance; Elmax is generally regarded as slightly easier to sharpen while keeping a similar wear profile. S35VN is the more forgiving all-rounder: a little less edge retention, noticeably more toughness, and simpler sharpening.

Is Elmax Right for You?

Choose Elmax if you cut a lot and hate sharpening mid-week — it is a set-and-forget edge for most daily tasks. Choose a tougher steel like S35VN if your knife sees prying, hard use, or awkward angles, and choose M390 if corrosion resistance in wet or humid conditions is your top priority.

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Whatever steel you settle on, the Artisan Cutlery folding knife collection has a blade matched to the job — precision-built for reliable everyday carry.