Sharpening cadence depends on steel composition, hardness, and daily workload. Use this reference to plan service dates and maintain warranty compliance.
Interval Table
| Steel grade | Typical HRC | High volume (20+ cuts/day) | Moderate volume | Low volume / specialist | Notes |
|---|---|---|---|---|---|
| 420J2 / 7CR | 52–56 | 3–4 months | 5–6 months | 6–8 months | Ideal for apprentices; resharpen sooner if used on dry hair frequently. |
| 440C | 58–60 | 4–5 months | 6–7 months | 8–9 months | Common in value/mid-tier sets; micro-serrations require specialist tooling. |
| VG-10 / ATS-314 | 60–62 | 5–6 months | 7–8 months | 9–10 months | Premium convex edges—send to factory or certified techs. |
| Powder metallurgy (PM, Nano) | 62–64 | 6–7 months | 8–9 months | 10–12 months | Longer intervals but never skip annual service; edge failure is costly. |
Service Planning Tips
- Log client volume weekly; adjust intervals when workload spikes.
- Schedule services ahead of busy seasons (wedding, holiday) to avoid downtime.
- Always request heat-controlled sharpening with water-cooled systems for premium steels.