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    • CPM 20CV

    20CV Steel Knives — Spyderco, Benchmade & WE Knife in Crucible's High-Edge-Retention PM Stainless Steel at Knifeworks

    20CV Steel Knives: Crucible Industries' Top-Tier Stainless Steel for Maximum Edge Life

    20CV is a powder metallurgy stainless steel produced by Crucible Industries in Syracuse, New York — the same company behind the CPM (Crucible Particle Metallurgy) process and steels like CPM-S30V, CPM-S35VN, and CPM MagnaCut. With approximately 1.9% carbon, 20% chromium, 4% vanadium, 1% molybdenum, and 0.6% tungsten, 20CV shares near-identical chemistry with Bohler M390 and Carpenter CTS-204P. All three are produced to the same alloy specification by different mills, and all three deliver the same standout characteristic: exceptional edge retention that outperforms every mainstream stainless steel except CPM MagnaCut.

    At Knifeworks, you are buying from an authorized dealer: every 20CV knife on this page ships with full manufacturer warranty coverage — Benchmade LifeSharp (free lifetime sharpening and mechanical repair), Spyderco's manufacturer warranty, and WE Knife's limited warranty. No gray-market sourcing, no voided warranties.

    Spyderco uses 20CV extensively across sprint runs and Gold Class production — it appears in limited Para 3, Paramilitary 2, Military, and Manix 2 runs where the combination of Spyderco geometry and top-tier steel draws buyers who want the best available production folder. WE Knife and Benchmade also produce 20CV models in their premium tiers. The steel holds an acute edge through extended cutting use, resists corrosion well in everyday carry, and demands quality abrasives at the sharpening bench.

    20CV, M390, and CTS-204P: the same steel, three mill namesCrucible (20CV), Bohler (M390), and Carpenter (CTS-204P) all produce steel from near-identical alloy recipes using powder metallurgy. Minor mill-to-mill variation can affect heat treat response at the margins, but for the end user the edge retention, toughness, and corrosion resistance are functionally interchangeable. Spyderco uses all three depending on procurement — if you see a sprint listed as M390 or CTS-204P, the steel performance is the same as 20CV.

    Call 888-225-9775 — our team can help you choose the right 20CV model.

    Steel type
    PM Stainless
    Produced by
    Crucible Industries
    Typical hardness
    60–62 HRC
    Edge Retention
    Excellent
    Corrosion resist.
    Very Good
    Sister steels
    M390 / CTS-204P
    Compare Selected

    20CV Steel: Frequently Asked Questions

    What is 20CV steel and who makes it?＋

    20CV is a powder metallurgy stainless steel produced by Crucible Industries in Syracuse, New York. Crucible is the same company behind the CPM process used in CPM-S30V, CPM-S35VN, and CPM MagnaCut, though 20CV is not a CPM-designated steel — it is produced under a separate alloy recipe. The composition runs approximately 1.9% carbon, 20% chromium, 4% vanadium, 1% molybdenum, and 0.6% tungsten, producing a dense vanadium and chromium carbide structure responsible for its exceptional wear resistance.

    20CV shares near-identical chemistry with Bohler M390 and Carpenter CTS-204P. All three are produced to the same alloy specification by different mills, and all three perform identically in terms of edge retention, toughness, and corrosion resistance at the same hardness under the same heat treat.

    What is the difference between 20CV, M390, and CTS-204P?＋

    20CV (Crucible Industries), M390 (Bohler), and CTS-204P (Carpenter Technology) are three trade names for near-identical steel compositions. The alloy chemistry, carbon content, chromium level, and vanadium content are essentially the same across all three. Minor mill-to-mill variation exists in powder particle size, processing parameters, and heat treat response, but for the end user the performance is functionally interchangeable.

    Spyderco uses all three depending on production run and steel availability — you may see the same model listed as 20CV in one sprint and M390 or CTS-204P in another. The steel performs the same. For buyers, the knife geometry, grind, and heat treat matter far more than the mill name on the bar stock.

    Trade NameMillCountry
    20CVCrucible IndustriesUSA
    M390BohlerAustria
    CTS-204PCarpenter TechnologyUSA
    How does 20CV compare to CPM MagnaCut?＋

    CPM MagnaCut matches or exceeds 20CV on edge retention at the same hardness and dramatically outperforms it on toughness. 20CV at 62 HRC is noticeably more brittle than CPM MagnaCut at 64 HRC — the chromium carbide structure that gives 20CV its wear resistance also creates potential initiation points for micro-chipping under lateral stress or at acute edge angles. CPM MagnaCut uses niobium and vanadium carbides instead, keeping the steel matrix intact at higher hardness.

    CPM MagnaCut also has superior corrosion resistance. 20CV's 20% chromium is partially tied up in carbides, reducing the free chromium available for rust protection. CPM MagnaCut has no chromium carbides, so all chromium works in the matrix. For most buyers today, CPM MagnaCut is the stronger all-around choice. 20CV remains the steel to seek out in Spyderco sprint runs and limited WE Knife offerings where it appears.

    How does 20CV compare to CPM-S35VN?＋

    20CV significantly outperforms CPM-S35VN on edge retention — laboratory wear testing places 20CV well above CPM-S35VN in total edge life. The tradeoffs are toughness and sharpenability. CPM-S35VN is notably tougher than 20CV at comparable hardness levels and considerably easier to maintain at the bench. CPM-S35VN sharpens on standard diamond stones and ceramic rods; 20CV demands quality diamond or CBN abrasives and more time.

    For hard use, outdoor tasks, or buyers who sharpen with basic tools, CPM-S35VN is the more practical everyday choice. For precision EDC cutting where maximizing edge life is the priority and the owner maintains their knife with quality equipment, 20CV has a clear advantage.

    Is 20CV hard to sharpen?＋

    Yes — 20CV is one of the more demanding stainless blade steels to sharpen at home. Its high vanadium and chromium carbide content resists abrasion from standard aluminum oxide whetstones and most ceramic rods effectively. Diamond abrasives or CBN stones are the recommended choice at 60–62 HRC. With the right abrasives, 20CV sharpens predictably and takes a very refined edge, but expect meaningfully more bench time than with CPM-S35VN or 154CM.

    For field touch-ups, a fine diamond card works reasonably well. For full re-profiling, a quality diamond bench stone is the minimum. If you own a Benchmade in 20CV, LifeSharp covers free professional sharpening for the life of the knife — a practical offset to the at-home sharpening challenge.

    Does 20CV rust or stain easily?＋

    20CV has very good corrosion resistance — significantly better than tool steels like D2 and comparable to CPM-S35VN in real-world carry. Its 20% chromium content provides strong protection against sweat, humidity, and mild food acids. Because a portion of that chromium is tied up in carbides rather than free in the matrix, its corrosion resistance is slightly below CPM MagnaCut under the same test conditions.

    In practical EDC use, 20CV will not rust under normal conditions. Wipe the blade after extended saltwater or acidic food exposure, keep the pivot lubricated, and the steel will stay clean through years of carry.

    What brands use 20CV steel in their knives?＋

    Spyderco is the brand most associated with 20CV, using it extensively across sprint runs and Gold Class production in their Para, Military, and Manix lines. Benchmade and WE Knife have also produced 20CV models in their premium and custom tiers. Knifeworks carries authorized stock from Spyderco, Benchmade, and WE Knife with full manufacturer warranty coverage.

    BrandNotable 20CV ModelsWarranty
    SpydercoPara 3, Paramilitary 2, Military, Manix 2 sprint runsManufacturer limited warranty
    BenchmadeGold Class and custom shop modelsLifeSharp — free lifetime sharpening & repair
    WE KnifePremium collaboration and flagship modelsWE Knife limited warranty
    Which 20CV knife should I buy at Knifeworks?＋

    20CV in Spyderco is almost always a sprint run — a limited production release that sells through and does not return. If a Spyderco 20CV model is in stock, it represents the best opportunity to own a proven Spyderco geometry in a top-tier blade steel at production pricing. Sprint runs in this steel have strong secondary market value and rarely sit long at authorized dealers.

    If you are comparing 20CV to M390 or CTS-204P in similar models, the steel performance will be functionally identical — the decision comes down to the specific knife, geometry, and price. If you are comparing 20CV to CPM MagnaCut in a current production model, CPM MagnaCut is the more advanced steel. Call 888-225-9775 and our team can walk you through what is currently in stock.

    20CV vs. comparable blade steels

    SteelToughnessEdge RetentionCorrosion ResistanceSharpenability
    20CV ★ModerateExcellentVery goodDifficult
    M390ModerateExcellentVery goodDifficult
    CTS-204PModerateExcellentVery goodDifficult
    CPM MagnaCutExceptionalHighExcellentModerate
    CPM-S35VNHighModerateHighEasy
    CPM-S30VMod–HighModerateHighModerate
    154CMMod–HighModerateAbove avgVery easy
    20CV, M390, and CTS-204P: identical ratings because they are the same steelAll three share the same alloy specification and appear in this table with identical ratings. If you are deciding between a Spyderco 20CV sprint and a Benchmade M390 Gold Class, the steel is not the variable — the geometry, lock, handle material, and heat treat are.
    ⚔
    Spyderco, Benchmade & WE KnifeAuthorized 20CV catalog including Spyderco sprint runs, Benchmade Gold Class models, and WE Knife premium collaborations.
    Authorized Dealer — Full Warranty CoverageBenchmade LifeSharp: free lifetime sharpening and mechanical repair. Spyderco and WE Knife manufacturer warranties on every knife sold.
    20CV vs. CPM MagnaCutDeciding between the two? Call 888-225-9775 — our team can tell you which steel makes more sense for your use case and what is currently in stock.
    Same or Next Business Day ShippingShips from Columbia, Louisiana. Order by 2 PM CT and your 20CV knife is on its way today.