When comparing Shirogami #1 (White #1) and Aogami #1 (Blue #1), neither is strictly "better"—it depends on whether you value ultimate sharpness or long-term edge retention. Both contain roughly 1.30% carbon, allowing them to reach a similar hardness of 63–65+ HRC.
Shirogami #1 vs. Aogami #1
Feature | Shirogami #1 (White #1) | Aogami #1 (Blue #1) |
|---|---|---|
Alloying Elements | Pure (Iron + Carbon) | Added Tungsten & Chromium |
Sharpness | Superior peak sharpness. Takes a finer, surgical edge. | Excellent, but feels slightly "toothier". |
Edge Retention | Moderate; needs more frequent touch-ups. | Higher. Tungsten increases wear resistance significantly. |
Durability | Brittle. High risk of chipping. | Slightly more robust due to chromium. |
Sharpening | Very easy. Fast feedback on whetstones. | Slower; carbides resist abrasion. |
Reactivity | Extremely high. Rusts very quickly. | High, but slightly more stain-resistant. |
Which One Should You Choose?
Choose Shirogami #1 if:
You are a precision-focused chef or enthusiast who prioritizes clean, silky-smooth cuts. It is the gold standard for traditional single-bevel knives like the Yanagiba (sashimi knife) or Usuba for fine vegetable work.
Best for: Professionals who sharpen daily and want "supernatural" effectiveness.
Choose Aogami #1 if:
You want a high-performance tool that stays sharp through long prep sessions. The added tungsten acts like "tiny armor" against wear, making it better for busy professional kitchens where you don't have time to touch up your edge mid-shift.
Best for: Workhorse Gyutos or any knife used for high-volume slicing.
Summary Recommendation:
For Sashimi and precision work, pick Shirogami #1.
For all-day line work and durability, pick Aogami #1.