ATS-314 vs Cobalt Alloy: Comparing Premium Cobalt Steels
How does ATS-314 compare to cobalt alloy scissor steel?
ATS-314 is a specific cobalt-bearing stainless from Proterial (formerly Hitachi Metals), vacuum-tempered to about 62–64 HRC for top-tier edge life, while 'cobalt alloy' is a broader premium family around 59–62 HRC — both glide cleanly, but ATS-314 is the harder, more documented grade and cobalt alloy the slightly tougher, more variable one.
ATS-314 is prized for a low-friction convex edge and long life (roughly 1,200–1,600 cuts), with the trade-off that it can chip rather than roll if dropped. The cobalt alloy label covers several recipes that typically run 900–1,200 cuts with a touch more resilience. Both are strong on corrosion. Because ‘cobalt alloy’ spans makers, the fair comparison is always against the specific steel and heat treatment behind a given pair.
Verified Jun 2026
| Attribute | ATS-314 Japan | Cobalt Alloy Stainless Steel Japan |
|---|---|---|
| Overall tier | Tier S | Tier A |
| Hardness | 62–64 HRC | 59–62 HRC |
| Edge retention | 1,200–1,600 cuts before pro tune-up | 900–1,200 cuts before sharpening |
| Corrosion resistance | High | High |
| Steel family | High-carbon stainless alloy | Cobalt-enriched stainless |
| Best for | Slide and point cutting on dense sections | Precision stylists and barbers needing premium longevity |
| Full entry | Full entry |
marks the top hardness and overall tier among the steels shown. The right steel depends on your cutting style, volume, and budget — open each entry for the full picture.
Reading the spec sheet
When a pair lists ATS-314, you know the grade, the maker, and roughly what to expect. When it lists “cobalt alloy,” that’s a family, not a guarantee — ask which steel and how it’s hardened. A premium cobalt steel from a serious forge can sit right alongside ATS-314 on edge life; a vaguely specified one may not. Judge the documentation, then the feel in your hand.