Civivi Knives — How a Chinese Brand Won Over the Budget EDC World

D2 Steel Guide: The Budget EDC King Explained

ByMarkus

Knife steel is the heart of any blade. Composition, heat treatment, and carbide structure determine edge retention, sharpenability, corrosion resistance, and toughness. Understanding steel helps you make informed decisions. This guide breaks down everything.

Our Top Picks for This Category

We evaluated these options based on blade steel performance, ergonomics, build quality, and real-world usability. After extensive testing and comparison, here are the standouts.

  • Ontario RAT 2 — budget. AUS-8 Japanese stainless with 0.75% carbon, 14% chromium. Exceptional ease of sharpening. Takes razor edge quickly but doesn”t hold it long.
  • Hogue Deka — premium. CPM-MagnaCut — Dr. Larrin Thomas”s revolutionary 2021 steel. Eliminates chromium carbides, uses vanadium/niobium instead. Unprecedented balance of edge retention, toughness, stain resistance.
  • Spyderco PM2 — premium. CPM-CruWear powder metallurgy tool steel — outstanding toughness with very good wear resistance. Semi-stainless (similar to D2). Tougher than S30V.
  • Spyderco Stretch 2 — specialty. Bohler K390 — non-stainless tool steel with extreme vanadium/tungsten carbide wear resistance. Holds edge extraordinarily long. Requires diamond/CBN to sharpen.

Pros & Cons at a Glance

Ontario RAT 2

  • ✅ Very easy to sharpen
  • ✅ Good corrosion resistance
  • ✅ Tough
  • ❌ Low edge retention
  • ❌ Needs frequent touch-ups

Hogue Deka

  • ✅ Revolutionary balanced performance
  • ✅ Exceptional toughness
  • ✅ Excellent stain resistance
  • ❌ Very expensive
  • ❌ Limited availability

Spyderco PM2

  • ✅ Outstanding toughness
  • ✅ Very good wear resistance
  • ✅ Tougher than S30V
  • ❌ Semi-stainless — needs some care
  • ❌ Can patina

Spyderco Stretch 2

  • ✅ Extreme edge retention
  • ✅ Cuts forever
  • ✅ Very high hardness
  • ❌ Not stainless — will rust
  • ❌ Very difficult to sharpen

Ease of Sharpening: The Forgotten Property

Corrosion resistance varies dramatically. True stainless (LC200N, H1, 20CV, M390) resist rust even in saltwater. Semi-stainless (D2, CruWear) spot or patina with neglect. Carbon/tool steels (1095, O1, K390) require active maintenance — oiling, immediate drying. Choose based on your environment and maintenance willingness.

Edge Retention Explained

Edge retention is determined by carbide content and hardness. Carbides — microscopic hard particles of vanadium, tungsten, niobium, or chromium — resist abrasive wear. High-carbide steels like M390, K390, and S90V dominate edge retention tests. The trade-off: more carbides mean reduced toughness and increased sharpening difficulty.

Our Recommendation

Steel selection comes down to balancing edge retention, toughness, corrosion resistance, and ease of sharpening for your needs. No “best” steel exists — only best for your use case. Modern powder metallurgy steels like MagnaCut come closest to having it all, but traditional steels remain excellent when properly heat treated.

View Ontario RAT 2 on Amazon
View Hogue Deka on Amazon
View Spyderco PM2 on Amazon

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