If you have been shopping premium EDC folders lately, you have probably noticed the same two steel names showing up on spec sheets: S35VN and S45VN. They look almost identical on paper, they both come from Crucible's CPM process, and both are sold as upgrades over S30V. Yet S45VN usually carries a price premium.
Is that premium worth paying? It depends on what you do with your knife, how often you sharpen, and where you carry it. Here is the practical breakdown.
The Short Version
- S35VN is the tough, balanced, easy-to-maintain classic. It takes a very keen edge, responds well to stropping, and it is the steel you will find on more knives at every price point.
- S45VN is the newer, more corrosion-resistant, higher-hardness evolution. It holds an edge longer and shrugs off sweat and humidity better, at the cost of a little toughness and a bit more effort on the stones.
- If you sharpen your own knives and want the friendliest steel on a stone, S35VN is still the smarter pick.
- If you want the longest working edge between touch-ups and live somewhere humid, S45VN earns its premium.
What S35VN Actually Is
S35VN is a martensitic stainless steel made by Crucible Industries using the CPM (Crucible Particle Metallurgy) process. Instead of pouring molten steel into an ingot where carbides can clump together, the CPM process sprays the melt into fine droplets that solidify into a powder, which is then consolidated. The result is a very fine, very uniform carbide distribution — and that uniformity is exactly why the steel sharpens cleanly and holds a stable edge instead of chipping around carbide clusters.
S35VN was developed as a direct upgrade to S30V. The change was the deliberate addition of niobium, which refines the grain structure and improves toughness — commonly cited as roughly 15 to 20 percent tougher than S30V — while keeping the excellent wear resistance and edge retention S30V was known for. Vanadium supplies the wear resistance, chromium supplies the stain resistance, and the combination made S35VN one of the most widely used premium knife steels of the last decade. For background on the manufacturer, see the Crucible Industries overview or the Knife Steel Nerds archive of steel data.
What Changed With S45VN
S45VN arrived in late 2019 as a rebalanced version of the same idea. Crucible shifted the chemistry so the steel forms more chromium carbides while leaving more free chromium in the matrix — and free chromium is what actually resists corrosion. The published composition is roughly 1.48% carbon, 16.0% chromium, 3.0% vanadium, 2.0% molybdenum, 0.5% niobium, and 0.15% nitrogen. Compared with S35VN you get more carbon, a touch more chromium, and added nitrogen, which together allow higher working hardness.
The trade-offs are real but narrow. S45VN is generally reported as tougher than S30V but slightly less tough than S35VN, while beating it on corrosion resistance and edge retention. In practice, S45VN is commonly run in the 59 to 61 HRC window, while S35VN is often run a point or two softer. If you want to understand why hardness numbers matter more than raw chemistry, our Rockwell hardness explainer covers the scale, and our heat treatment deep dive explains why a well-treated S35VN blade can outperform a poorly treated premium steel.
Head-to-Head Comparison
Edge retention
S45VN wins, but not by a landslide. The extra carbon and chromium carbides mean it keeps a working edge a bit longer in abrasive daily tasks like breaking down cardboard, cutting rope, or trimming zip ties. S35VN is no slouch — it is still a high-vanadium powder steel, and it ranks well in our ranking of which steels hold an edge longest.
Toughness
S35VN wins. If your daily carry includes prying, hard plastic, or the occasional accidental twist, S35VN gives you a little more margin before the edge rolls or chips. Both steels are dramatically tougher than a high-hardness non-stainless like Maxamet or ZDP-189, which is why both remain popular work steels.
Corrosion resistance
S45VN wins, and this is its strongest argument. Better free chromium and added nitrogen make it noticeably more resistant to rust spotting from fingerprints, pocket sweat, and coastal humidity. If you live near the ocean or carry in a humid climate, this single property often justifies the upgrade. For a wider look at stain resistance, see our corrosion-resistant steel comparison.
Sharpening and maintenance
S35VN wins. It is one of the easiest premium stainless steels to sharpen — it forms a burr predictably, deburrs cleanly, and responds quickly to a strop. S45VN is not difficult, but the higher carbide volume and higher hardness mean it takes more passes to raise a burr and a little more care to remove it. Whichever you pick, a consistent angle matters more than the steel: our guide to sharpening angles and our beginner's sharpening walkthrough will get you sorted.
Value
S35VN wins on price. It is the older, more widely licensed steel, and it shows up on $120 to $250 knives with premium handles. S45VN is the newer steel, so it generally appears on flagship models. For the broader context on mid-range versus premium steels, the toughness, edge retention, and corrosion triangle is worth a read.
Which Steel Fits Your Carry?
Pick S35VN if you:
- sharpen your own knives and want the easiest premium steel to maintain
- want maximum toughness for a hard-use work knife
- are shopping under about $180, where S35VN delivers the most steel for the money
Pick S45VN if you:
- want the longest working edge between touch-ups
- carry in humid or coastal conditions
- want a flagship folder where the steel upgrade is part of the point
S45VN Knives Worth Considering
Kizer has leaned into S45VN harder than any other brand in this price range. The Kizer Militaw in S45VN with titanium and fat carbon scales is a full-size 3.35-inch design at $219, and the Kizer Madrac Button Liner Lock brings the same steel into a more compact 3.05-inch package at $169.99. If you prefer a button-style lock, the Drop Bear with the Clutch Lock and S45VN blade sits at $209 with a 2.97-inch blade.
For something more dressy, the Kizer Trestle in titanium and timascus is a limited run at $289, while the Kizer Quoll in titanium with a titanium Damascus handle reaches $299.95. Outside of Kizer, the WE Knife Bougie Banter WE24009-2 runs a 2.91-inch CPM S45VN blade at $247 — a good example of how the steel scales up into WE's premium tier.
S35VN Knives Still Worth Buying
The S35VN side of the catalog is deeper simply because the steel has been around longer. The Kizer Militaw in S35VN with titanium and Micarta matches the S45VN version's 3.35-inch blade profile at $159, and the Kizer Varatas in full titanium offers a 3.27-inch S35VN blade at $169.
Vosteed's Thunderbird Trek Lock with a 3.48-inch S35VN blade and Topo G10 handle comes in at $129, and the Kroc Top Liner Lock with an aluminum and carbon fiber handle lands at the same price with a 2.99-inch blade — two of the better value S35VN picks in the catalog.
If you want a larger work blade, the CJRB Tundra J1966G-CGN runs a 3.78-inch CPM S35VN blade at $299.99, and the WE Knife Reiver WE16020-2 pairs a 3.97-inch S35VN blade with black hardware at $305. Artisan Cutlery's Tylos 1854G-BGCF limited edition offers a 3.21-inch S35VN blade at $222.
Where Each Steel Sits in the Premium Lineup
It helps to place both steels against the rest of the premium market. S30V was the original Crucible stainless benchmark, and S35VN improved on it with niobium for toughness. S45VN then took S35VN's formula and tilted it toward corrosion resistance and hardness. Beyond that family, steels like M390, CPM 20CV and S90V trade toughness for even more wear resistance, while MagnaCut pushes corrosion resistance higher still with a different balance entirely.
That ordering matters when you are comparing folders at similar prices. A $160 S35VN blade and a $200 S45VN blade are not separated by a dramatic performance gap — they are separated by a small, specific set of trade-offs. If you already own a well-heat-treated S35VN knife and it suits your use, moving to S45VN is an upgrade in corrosion resistance and edge life, not a transformation. For a closer look at how the top-end steels separate from one another, see our brand spec sheets and the S35VN vs S90V comparison.
Both are also worth judging by the knife around them, not just the steel. Blade grind, edge geometry, and lock design frequently matter more to daily performance than the last few points of wear resistance. A thin, well-ground S35VN blade in a knife with a smooth action will out-cut a thick, conservatively ground S45VN blade every time.
Care Notes That Apply to Both
Neither steel is stainless in the absolute sense — both can spot if you leave moisture and salts on the blade. Wipe the blade down after a sweaty day, keep the pivot clean, and touch up the edge with a few passes on a strop rather than waiting until the knife is fully dull.
A light oil on the blade and pivot is plenty. If you carry in a humid climate, check the blade every couple of weeks; if you see faint spotting, our rust removal and prevention guide walks through the fix. Blade finish matters here too: a stonewashed or bead-blasted surface traps less visible moisture damage than a mirror polish, which is one reason most EDC blades ship with a working finish.
Bottom Line
S35VN is the pragmatic choice: tough, easy to sharpen, widely available, and excellent value. S45VN is the refinement: better corrosion resistance, better edge retention, and a premium feel that matches its price. If you carry hard and sharpen often, save the money and buy S35VN. If you want the longest edge and live in a humid climate, S45VN is worth the step up — and either way, you are getting a Crucible powder steel that will outlast most of what you carry.