Between Shirogami #3 (White #3) and Aogami Super (AS), Aogami Super is objectively the "better" high-performance steel. They are at opposite ends of the spectrum: Shirogami #3 is an entry-level, budget-friendly steel, while Aogami Super is the "king" of Japanese carbon steels
Quick Comparison: Shirogami #3 vs. Aogami Super
Feature | Shirogami #3 (White #3) | Aogami Super (Blue Super) |
|---|---|---|
Edge Retention | Low. Dulls quickly with use. | Extreme. The best edge life available. |
Max Hardness | 58–60 HRC | 64–67 HRC. Much harder. |
Carbon Content | ~0.85% (Lowest) | ~1.45% (Highest). |
Toughness | Very High. Hard to chip. | Moderate. Brittle due to extreme hardness. |
Sharpening | Effortless. Ideal for beginners. | Challenging. Requires quality stones. |
Price | Budget / Affordable. | Premium / Expensive. |
Detailed Analysis
Why Aogami Super is the Winner:
Performance Longevity: Aogami Super is enriched with Tungsten, Chromium, and Vanadium. This creates a "super-steel" that can hold a razor edge for weeks of home use, whereas Shirogami #3 may feel dull after a single heavy prep session .
Cutting Precision: Because it can be treated to such a high hardness, blacksmiths can grind Aogami Super blades much thinner. This results in a "laser" feel that glides through food with almost no resistance.
Professional Standard: Most of the world's most famous blacksmiths (like Yu Kurosaki or Takeda) use Aogami Super for their flagship lines.
Why you might still consider Shirogami #3:
Durability: If you are prone to being "rough" with your knives (hitting the board hard or twisting the blade), Shirogami #3 is much more likely to survive without chipping. Aogami Super is very hard and can be glass-like if mistreated.
Learning Curve: If you want a knife purely to practice your sharpening skills, Shirogami #3 is the perfect "trainer" steel because it responds to the stones so quickly.
The Verdict
Choose Aogami Super if you want a top-tier, professional-grade knife and don't mind the higher price tag. It is the better investment for a primary Gyuto (chef's knife) [1.1].
Choose Shirogami #3 only if you are on a strict budget or specifically need a tough utility knife (like a Deba) for rougher work.