VG-10 vs. SG2 vs. AUS-10: which knife steel is best?
Short answer: SG2 holds an edge the longest (62-63 HRC) but is harder to sharpen. VG-10 (60-61 HRC) is the best all-round choice for most home cooks. AUS-10 (58-59 HRC) is tougher and easier to sharpen but dulls sooner.
Key takeaways
- Best all-round: VG-10.
- Longest edge retention: SG2 (also sold as R2).
- Easiest to maintain and most chip-resistant: AUS-10.
- Heat treatment matters as much as the steel name.
Side-by-side comparison
| Steel | Typical hardness | Edge retention | Ease of sharpening | Chip resistance |
|---|---|---|---|---|
| SG2 / R2 | 62-63 HRC | Excellent | Moderate | Good |
| VG-10 | 60-61 HRC | Very good | Easy | Good |
| AUS-10 | 58-59 HRC | Good | Very easy | Very good |
VG-10: the all-rounder
VG-10 is a Japanese stainless steel with added cobalt and vanadium. At 60-61 HRC it takes a fine edge, resists corrosion and is easy to bring back on a 1000-grit whetstone. It is the most common core steel in quality Damascus kitchen knives.
SG2: maximum edge retention
SG2 is a powder-metallurgy steel. The fine, even carbide structure allows hardness of 62-63 HRC and a thinner edge that lasts noticeably longer. The trade-offs are higher price and slightly more care: avoid twisting cuts and hard boards.
AUS-10: tough and forgiving
AUS-10 runs a little softer. It loses its edge sooner than VG-10 but is less likely to chip and is very easy to sharpen, which makes it a good choice for utility knives that see rough use.
Frequently asked questions
Is higher HRC always better?
No. Higher hardness holds an edge longer but makes the edge more brittle. 60-62 HRC is the sweet spot for most kitchen use.
Is VG-10 good for a first Japanese knife?
Yes. VG-10 is forgiving, rust-resistant and easy to sharpen, which makes it the most common recommendation for a first Japanese knife.