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    • CTS BD1N

    CTS BD1N Steel Knives: Carpenter's Nitrogen-Enriched Stainless for Everyday Carry Spyderco Folders

     

    CTS BD1N is a Carpenter stainless steel that uses nitrogen in place of some of the carbon found in traditional stainless recipes. Nitrogen produces harder, more corrosion-resistant carbides while keeping the steel easier to work than powder metallurgy alternatives. The result is a mid-tier stainless that outperforms budget steels like 8Cr13MoV and AUS-8 by a wide margin and competes directly with CPM-154 and Bohler N690 — at a price point that keeps Spyderco's popular mid-range folders accessible.

    At Knifeworks, you are buying from an authorized dealer: every CTS BD1N knife on this page ships with full manufacturer warranty coverage — Spyderco's manufacturer warranty against defects in materials and workmanship, backed by their long-standing service reputation. No gray-market sourcing, no voided warranties.

    CTS BD1N sharpens more easily than any of the premium PM stainless steels — you can bring it back on a standard ceramic rod or fine aluminum oxide stone without diamond abrasives. It resists corrosion well enough for humid, sweat-heavy, and light saltwater carry. Edge retention is genuinely good for the tier — not CPM-S30V territory, but noticeably better than 8Cr13MoV or AUS-8, and enough that most everyday carry users won't need to touch up the edge as often as they think.

    Why Spyderco uses CTS BD1N across mid-tier folder platformsSpyderco's mid-tier folders — Native 5, Delica, Endura, and select sprint editions — need a stainless that punches above its price point without pushing the retail into premium territory. CTS BD1N delivers exactly that: better corrosion resistance than most budget stainless steels thanks to nitrogen alloying, edge retention that outperforms 8Cr13MoV and AUS-8, and sharpenability that keeps the knife easy to maintain for owners who don't have diamond stones. For an EDC folder that hits the $80–$150 sweet spot, CTS BD1N is the deliberate choice.

    Call 888-225-9775 — our team can help you choose the right CTS BD1N Spyderco for your carry.

    Steel type
    Nitrogen Stainless
    Producer
    Carpenter
    Typical hardness
    60–62 HRC
    Edge retention
    Good
    Corrosion resist.
    Very Good
    Sharpenability
    Easy
    Compare Selected
    What is CTS BD1N steel?+

    CTS BD1N is a Carpenter stainless steel that uses nitrogen in place of some of the carbon found in traditional stainless recipes. Nitrogen produces harder, more corrosion-resistant carbides while keeping the steel easier to work than powder metallurgy alternatives. It sits in the mid-tier stainless category alongside CPM-154, Bohler N690, and 14C28N.

    Is CTS BD1N a good knife steel?+

    Yes, for the mid-tier price point. CTS BD1N outperforms budget stainless steels like 8Cr13MoV and AUS-8 on edge retention and corrosion resistance, while being significantly easier to sharpen than premium PM stainless like CPM-S30V or M390. It's the practical choice when you want a real step up from budget steel without paying premium PM prices.

    How does CTS BD1N compare to CPM-S30V and CPM-S35VN?+

    CPM-S30V and CPM-S35VN outperform CTS BD1N on edge retention. CTS BD1N is easier to sharpen and typically appears at a lower price point. For an EDC folder that you actually use and sharpen regularly, CTS BD1N is the more forgiving choice. For a folder you want to sharpen once and forget about for months, CPM-S30V or CPM-S35VN holds the edge longer.

    How does CTS BD1N compare to 8Cr13MoV and AUS-8?+

    CTS BD1N significantly outperforms both. Edge retention on CTS BD1N is noticeably better, corrosion resistance is better thanks to nitrogen alloying, and the steel holds a working edge for longer between touch-ups. 8Cr13MoV and AUS-8 are budget-tier steels; CTS BD1N is mid-tier. The price difference is real but the performance difference is proportional.

    How do I sharpen CTS BD1N?+

    Standard ceramic rods and fine aluminum oxide stones work well — CTS BD1N does not require diamond abrasives. Guided systems like the Spyderco Sharpmaker, Work Sharp Precision Adjust, or Lansky all deliver clean edges without special stones. Finish on a leather strop with a light polishing compound for the cleanest apex. This is one of the practical advantages of CTS BD1N over premium PM stainless.

    Does CTS BD1N rust?+

    Under normal use conditions, CTS BD1N does not rust. The nitrogen alloying combined with chromium content puts it in the very good corrosion resistance tier. Sweat, humidity, and light saltwater exposure will not affect the blade with normal wipe-down maintenance. It resists corrosion better than most non-nitrogen stainless steels at similar hardness.

    Which Spyderco knives come in CTS BD1N?+

    CTS BD1N appears across Spyderco's mid-tier folder lineup. Common platforms include the Native 5, Delica 4, Endura 4, Persistence, Tenacious, and various sprint edition variants. Not every Spyderco runs CTS BD1N — the brand uses many steels across their catalog, from budget 8Cr13MoV to premium Maxamet. Check the specific SKU's blade steel specification before assuming CTS BD1N.

    Why does Spyderco choose CTS BD1N over other mid-tier stainless steels?+

    Spyderco's mid-tier folders need a stainless that outperforms budget steel without pushing the retail into premium PM stainless territory. CTS BD1N delivers exactly that combination: better corrosion resistance than most non-nitrogen stainless, edge retention that beats 8Cr13MoV and AUS-8, sharpenability that keeps the knife easy to maintain for owners who don't have diamond stones, and a price point that keeps mid-tier Spydercos in the $80–$150 range.

    CTS BD1N nitrogen stainless vs. comparable blade steels

    SteelToughnessEdge RetentionCorrosion ResistanceSharpenability
    CTS BD1N ★ModerateGoodVery GoodEasy
    CPM-154ModerateGoodVery GoodModerate
    Bohler N690ModerateGoodVery GoodEasy
    14C28NModerateGoodVery GoodEasy
    CPM-S30VMod-HighHighVery GoodModerate
    8Cr13MoVModerateLowModerateVery Easy
    AUS-8ModerateLow-ModModerateVery Easy
    🛡️
    Authorized dealerEvery CTS BD1N Spyderco knife ships with full manufacturer warranty coverage.
    🚚
    Same-day shippingShips from Columbia, Louisiana — 888-225-9775
    🏆
    Mid-tier value in stainlessNitrogen-enriched Carpenter stainless in Spyderco Native 5, Delica, Endura and sprint editions.
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    Call us before you buy888-225-9775 — we carry these knives daily.