At a glance
Relative to the other steels on this site. Hardness 61-63 Rockwell C as typically heat treated.
Aogami 2, also called Blue #2 or Blue Paper 2, is one of the most widely used carbon steels in Japanese kitchen knives. It comes from Hitachi Metals, now named Proterial, and sits in the middle of the blue family, below Aogami 1 and Aogami Super. Many smiths treat it as their all-round carbon steel.
What Aogami 2 steel is
It is a high-carbon steel with very low impurities, plus small additions of chromium and tungsten. Those additions make it hold an edge longer than white steel and make heat treatment a bit more forgiving for the smith. Typical hardness is around HRC 61 to 63. It is not stainless.
How an Aogami 2 knife behaves
Edge retention is middle of the range, similar to VG-10 but with a keener feel. It sharpens quickly on water stones and gives clear feedback, so it is a good steel for learning to sharpen. Toughness is good for a Japanese carbon steel, so small chips are less likely than with Aogami Super. It will rust if left wet, and it builds a patina with use.
Who makes Aogami 2 knives
Aogami 2 is everywhere in traditional Japanese knife making. Sakai workshops use it in double-bevel and some single-bevel knives, Tosa smiths in Kochi forge it into rustic kurouchi blades, and Echizen and Sanjo makers offer it in forged lines. A 210 mm gyuto usually runs $120 to $280, moving with the yen. We do not list an Aogami 2 knife right now. The closest in our catalog is the Moritaka Aogami Super bunka, which uses the harder grade from the same family.
Aogami 2 vs Shirogami 2 and Aogami Super
| Steel | Typical HRC | Edge retention | Sharpening | Toughness |
|---|---|---|---|---|
| Shirogami 2 | 61-63 | Lower | Easiest | Good |
| Aogami 2 | 61-63 | Middle | Easy | Good |
| Aogami Super | 63-65 | High | Middle | Lower |
Aogami 2 vs Shirogami 2 is the classic carbon steel question. Shirogami 2 sharpens a little faster and takes a slightly finer edge. Aogami 2 lasts longer between sharpenings. Aogami 2 vs Aogami Super comes down to toughness versus edge life. See the steel guide for the full picture.
Who should buy Aogami 2
It fits cooks who want their first carbon knife and plan to sharpen on stones. It works well in a gyuto, nakiri, or bunka. If you are not sure about carbon at all, read our carbon vs stainless guide first.
Maintenance
Wipe the blade during prep, wash with warm water, and dry fully before putting it away. Oil it lightly if it will sit unused. Remove spots early with a rust eraser. A patina will form, and that is normal. Our carbon steel care guide covers daily habits.
Downsides
It rusts and reacts with acidic food, so it is not for a dishwasher household or a knife that lives in a wet sink. Edge life is shorter than Aogami Super or SG2. Quality also swings with the smith, since the heat treatment matters more than the label.
If you want an Aogami 2 knife sourced from a specific region or maker, send us a request and we will look for one and quote it with duties paid.
Frequently asked questions
Is Aogami 2 good for beginners?
It is a friendly carbon steel if you are willing to dry the knife after use. It sharpens easily and is a little more forgiving than Aogami Super.
What is the difference between Aogami 2 and Shirogami 2?
Aogami 2 adds chromium and tungsten to the same clean base as Shirogami 2. That gives longer edge life at the cost of slightly slower sharpening.
Does Aogami 2 rust?
Yes. It is carbon steel and will rust if left wet. A patina forms with use and helps slow new rust.