The Steel Comparison
| Property | Kamikoto (420J2) | Shun Classic (VG-Max) |
|---|---|---|
| Carbon content | 0.26% | 1.10% |
| Hardness | ~52–54 HRC | 60–61 HRC |
| Edge retention | Poor | Excellent |
| Price range (8-inch) | $100–$200 | $120–$160 |
420J2: The Problem
420J2 is a very low-carbon stainless steel used primarily for industrial applications, razor handles, and medical instruments where corrosion resistance is paramount and edge retention is irrelevant. At 52–54 HRC, it cannot take or hold the fine edge that kitchen knives require. A Kamikoto knife sharpens to a working edge initially but loses that edge within days of regular kitchen use.
VG-Max: The Real Thing
Shun's VG-Max is a proprietary steel developed with Takefu Special Steel. At 1.10% carbon and 60–61 HRC, it holds a fine edge for weeks of regular home cooking. This is what a premium Japanese kitchen knife steel actually looks like.
Kamikoto cannot compete with Shun — not in steel, not in hardness, not in edge retention. Shun VG-Max at 60–61 HRC vs Kamikoto's 420J2 at 52–54 HRC is not a comparison, it's a mismatch. Do not pay $100–$300 for a knife using steel that costs a fraction of the marketing budget to produce.