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    • CTS-204P

    CTS-204P Steel Knives: Carpenter's Third-Generation Premium Stainless for Production and Custom Folders

     

    CTS-204P is Carpenter Technology's third-generation powder metallurgy stainless steel — chemically near-identical to Bohler M390 and CPM 20CV, produced in the United States rather than Austria or by Crucible. All three steels share the same composition tier: high chromium for corrosion resistance, high vanadium for edge retention, and a fine powder metallurgy grain structure that translates to a cleaner, more consistent edge. When Spyderco, Zero Tolerance, Reate, and Rike spec CTS-204P, they are choosing an American-produced version of the same premium stainless formula that made M390 the benchmark for premium production folders.

    At Knifeworks, you are buying from an authorized dealer: every CTS-204P knife on this page ships with full manufacturer warranty coverage — Spyderco's manufacturer warranty, Zero Tolerance's limited lifetime warranty, and manufacturer coverage on every Reate and Rike folder. No gray-market sourcing, no voided warranties.

    CTS-204P delivers very high edge retention, excellent corrosion resistance, and moderate toughness — the same performance envelope as M390 and CPM 20CV. Practical daily-use differences between the three come down to heat treat quality and blade geometry, not the steel itself. The tradeoff, like all steels in this tier, is sharpening: CTS-204P's carbide content makes diamond plates the practical choice. Once you have a fresh edge, it lasts through months of daily carry.

    Why Spyderco, Zero Tolerance, Reate, and Rike run CTS-204P alongside M390 and 20CVManufacturers choose between M390, CPM 20CV, and CTS-204P largely based on supplier relationships and steel availability at production time — the three are chemically near-identical third-generation powder metallurgy stainless steels. Spyderco has featured CTS-204P in premium sprint runs and select production models; Zero Tolerance uses it across their premium framelock lineup; Reate and Rike run it in high-end titanium framelock production. All four brands treat CTS-204P as a top-tier steel option delivering the same real-world performance as M390 and 20CV.

    Call 888-225-9775 — our team can help you choose the right CTS-204P knife for your carry.

    Steel type
    PM Stainless
    Producer
    Carpenter
    Typical hardness
    59–61 HRC
    Edge retention
    Very High
    Corrosion resist.
    Excellent
    Sharpenability
    Moderate
    Compare Selected
    What is CTS-204P steel?+

    CTS-204P is Carpenter Technology's third-generation powder metallurgy stainless steel — chemically near-identical to Bohler M390 and CPM 20CV. All three share the same composition tier and deliver the same real-world performance: very high edge retention, excellent corrosion resistance, and moderate toughness. CTS-204P is the American-produced version of the formula.

    How does CTS-204P compare to Bohler M390 and CPM 20CV?+

    The three steels are chemically near-identical — different producers making versions of the same premium powder metallurgy stainless recipe. M390 comes from Bohler in Austria, CPM 20CV comes from Crucible in the United States, and CTS-204P comes from Carpenter in the United States. Real-world performance differences between them come down to heat treat quality and blade geometry, not the steel itself. All three sit in the same premium production folder steel tier.

    How does CTS-204P compare to CPM MagnaCut?+

    CTS-204P has slightly higher peak edge retention. CPM MagnaCut has significantly higher toughness. Both have excellent corrosion resistance. If you carry a folder and want maximum edge holding, CTS-204P is the tier leader. If you use your knife on harder materials or want a stainless that resists chipping better under lateral stress, CPM MagnaCut is the practical choice.

    How does CTS-204P compare to CPM-S45VN and CPM-S35VN?+

    CTS-204P outperforms both on edge retention. CPM-S45VN and CPM-S35VN are excellent all-around stainless steels with better toughness and easier sharpening, but CTS-204P holds an edge noticeably longer under equivalent use. If maximum edge retention is the priority, CTS-204P is the tier leader. If balanced performance with easier sharpening matters more, CPM-S45VN or CPM-S35VN is the more forgiving choice.

    How do I sharpen CTS-204P?+

    Diamond plates or fine ceramic rods are the practical choice. Standard aluminum oxide stones will polish the softer matrix while leaving the harder carbides untouched, resulting in a dull, rounded apex rather than a fresh edge. Guided systems like the Work Sharp Precision Adjust, Wicked Edge, or KME with diamond plates all work well. Finish with a diamond-compound strop for the cleanest apex.

    Does CTS-204P rust?+

    Under normal use conditions, CTS-204P does not rust. The chromium content puts it in the excellent corrosion resistance tier. Sweat, humidity, and light saltwater exposure will not affect the blade with normal wipe-down maintenance. Unlike carbon or tool steels, CTS-204P does not require oiling and does not develop patina.

    Which knives come in CTS-204P?+

    CTS-204P appears across premium production folders from multiple brands at Knifeworks. Spyderco has featured it in select production models and sprint runs. Zero Tolerance uses it across their premium framelock lineup. Reate and Rike run it in high-end titanium framelock production folders. Check the specific SKU's blade steel specification before assuming CTS-204P.

    Why do manufacturers choose CTS-204P over M390 or CPM 20CV?+

    The choice between M390, CPM 20CV, and CTS-204P is typically driven by supplier relationships, steel availability at production time, and pricing rather than performance differences. The three are chemically near-identical and deliver the same real-world edge retention and corrosion resistance. For a manufacturer, using CTS-204P means the same tier of steel with American production sourcing.

    CTS-204P premium stainless vs. comparable blade steels

    SteelToughnessEdge RetentionCorrosion ResistanceSharpenability
    CTS-204P ★ModerateVery HighExcellentModerate
    Bohler M390ModerateVery HighExcellentModerate
    CPM 20CVModerateVery HighExcellentModerate
    CPM MagnaCutHighHighExcellentModerate
    CPM-S45VNMod-HighHighExcellentModerate
    CPM-S35VNMod-HighHighVery GoodModerate
    D2ModerateHighLow-avgDifficult
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    Authorized dealerEvery CTS-204P knife ships with full manufacturer warranty coverage.
    🚚
    Same-day shippingShips from Columbia, Louisiana — 888-225-9775
    🏆
    Four brands in CTS-204PSpyderco, Zero Tolerance, Reate, and Rike premium production folders in CTS-204P.
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    Call us before you buy888-225-9775 — we carry these knives daily.