Cobalt Alloy vs VG-10: What 'Cobalt' Steel Actually Means
Is cobalt alloy steel better than VG-10 for scissors?
Neither wins on the label. VG-10 is one grade that Takefu documents. Cobalt alloy is a family name covering different steels and cobalt-base alloys, so ask the maker which material the pair uses and what hardness it publishes.
Some scissors use stainless with added cobalt; others use cobalt-base alloys, where cobalt is the main element. The word ‘cobalt’ covers many recipes and heat treatments, so it tells you less than a named grade. Takefu publishes VG-10’s composition, so you know what that grade is. When a pair is listed simply as ‘cobalt’, ask which steel and which maker; that, not the word itself, decides how it compares.
Updated Sep 2026
| Attribute | Cobalt Alloy Various | VG-10 (V Gold 10) Takefu, Fukui Prefecture, Japan | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Material hardness | No material figure cited. | ≥60 HRC; Takefu Special Steel; published quench hardness. Mill source | ||||||||||||||||||
| Finished-scissor examples | No model figure cited. | 59 HRC; Jaguar KAMIYU; maker-stated finished-scissor hardness. Model source | ||||||||||||||||||
| Published composition | No structured composition source is recorded here. Check the full material entry for its evidence and source limits. | Takefu VG-10. Representative producer table figures; stated maxima remain limits. Unreported elements are not zero and these figures are not a lot analysis. Composition source
Elements absent from this table are unreported in this source, not zero. These material figures do not identify the chemistry of an individual finished scissor. Indicative PREN: unavailable. No calculation: N lacks a published point value or two-sided range. Missing values and one-sided limits are not zero. Calculation and limits. | ||||||||||||||||||
| Steel family | Cobalt-added stainless or cobalt-base alloy | Stainless blade steel | ||||||||||||||||||
| Product links | Full entry | Full entry |
How to compare them fairly
Treat “cobalt alloy” as a starting point, not an answer. Ask the maker which steel it actually is and how it’s hardened, then line those numbers up against a known grade like VG-10. A named cobalt grade with a published hardness can be compared with VG-10; a pair labeled only “cobalt” cannot. The label tells you less than the heat treatment behind it.