Is S35VN Steel Good for Knives?

S35VN: The Evolution of a Classic Steel

CPM S35VN was developed by Crucible Industries in collaboration with Chris Reeve Knives as a direct upgrade to S30V — the steel that had been the industry standard for premium American knife steels for over a decade. The question everyone asks: is S35VN a meaningful improvement, or just a marketing upgrade that doesn't matter in real-world use?

The short answer is that S35VN is a genuinely better steel than S30V, with one major advantage and several smaller improvements. However, the degree to which you'll notice the difference depends entirely on how you use your knives.

What Changed from S30V to S35VN?

S35VN adds two key alloying elements not present in S30V:

• Niobium (Nb): ~0.5% — Refines the carbide structure, creating smaller, more evenly distributed carbides
• Increased nitrogen: Added during the PM process to enhance properties

These additions result in a fundamentally improved microstructure. The niobium carbides (NbC) that form in S35VN are much smaller and more evenly distributed than the vanadium carbides in S30V. This has cascading positive effects on toughness, edge retention consistency, and grindability.

S35VN Composition

• Carbon: 1.40%
• Chromium: 14.0%
• Vanadium: 2.0%
• Molybdenum: 2.0%
• Niobium: 0.5%

Notice that S35VN actually has less vanadium than S30V (2% vs. 4%). This might sound counterintuitive — less vanadium should mean less edge retention — but the niobium compensates by forming its own extremely hard carbides. The net result is a steel with similar or better wear resistance but a more uniform and refined microstructure.

Performance Comparison: S35VN vs. S30V

• Edge retention: S35VN edges out S30V slightly — roughly 10-15% better in controlled testing. The more uniform carbide distribution means the edge wears more consistently, maintaining cutting performance longer.
• Toughness: This is the major improvement. S35VN is measurably tougher than S30V — approximately 20-30% better in impact and flex tests. The refined carbide structure means fewer weak points where cracks can initiate.
• Corrosion resistance: Essentially identical between the two steels. Both offer very good stain and rust resistance for stainless steel.
• Ease of sharpening: S35VN is slightly easier to sharpen than S30V. The more uniform microstructure means the stone cuts more consistently, and the steel responds more predictably.
• Chipping resistance: S35VN is noticeably better. The toughness improvement means it handles lateral stress and hard impacts better.

Hardness Range

S35VN typically heat treats to 59-61 HRC in production knives, similar to S30V. However, because of its improved toughness, S35VN can be taken to slightly higher hardness levels (up to ~62 HRC) without the brittleness penalty that S30V would experience at those levels.

The Practical Difference

In everyday use, the differences between S30V and S35VN are subtle but real:

• For EDC knives: You'll go slightly longer between sharpenings with S35VN, and the knife will be more resistant to the small chips and edge damage that comes from daily carry. For most users, this is where the upgrade matters most.
• For kitchen knives: Both perform similarly. The edge retention difference is negligible in a kitchen context where knives are sharpened relatively frequently anyway.
• For hard-use and tactical knives: S35VN's toughness advantage is most apparent here. If you're subjecting your knife to heavy lateral stress, prying, or hard impacts, S35VN will hold up noticeably better.

The honest assessment is that most casual users won't notice a dramatic difference between a well-made S30V knife and a well-made S35VN knife. The improvement is real but incremental. For enthusiasts who appreciate the best engineering, S35VN is the objectively superior choice.

Who Makes S35VN Knives?

• Chris Reeve Knives — pioneered the steel in the Sebenza 21 (now offered in both S35VN and Magnacut)
• Benchmade — uses S35VN in select premium models
• Hinderer Knives — early adopter, uses S35VN in their XM series
• WE Knife — offers S35VN in several Banterian and Banterian Pro models
• Kizer Begleiter 2 — one of the more affordable S35VN options

S35VN vs. Magnacut: The New Decision

With Magnacut now on the market, some buyers wonder whether to skip S35VN entirely. Here's the context:

• Magnacut offers better edge retention AND toughness than S35VN
• Magnacut is significantly more expensive ($500-$1000+ vs. $150-$300 for S35VN)
• Magnacut is much harder to sharpen
• S35VN is available in far more models and at more accessible price points

Unless you specifically want the absolute best performance and are willing to pay the premium in both purchase price and maintenance effort, S35VN remains the smarter "sweet spot" steel. It offers about 90-95% of Magnacut's performance at a third to half the price.