Our in-depth range review

First Impressions

The immediately notable feature of the entire Kotetsu range is just how thin the blade is, in our sharpness tests we found it rated right up there with the best we stock and due to this much thinner construction it's also very noticeable how light the knife is as a whole.

Beauty

A dark brown and black octagonal rosewood handle in a traditional style combined with the clean, laminated finish of the blade gives a lovely contrast. The steeper, straight edge at the end of the blade instead of a more traditional rounded style creates a unique look.

The name "Iron clad" doesn't refer to the metals used in the making of the knives, they're powder steels not iron - but instead refers to the shape of the knives which is inspired by Japan's first iron clad battleships (Kōtetsu).

In Hand

We felt immediately that the lightness of the knife would be a big benefit for those who don't like the more Western style and it was extremely comfortable to use for extended periods.

Durability

The powdered steel used in the blade construction will keep an edge for a long time although due to the very thin blade construction we think this knife might be best suited to someone who has a more careful and considered cutting technique to avoid micro-chips appearing although we found no big issues with it while chopping through a range of veg and meat.

Ease of Care & Maintenance Tips

The usual care instructions of not putting in the dishwasher apply of course and we found a quick rinse and dry after use and you'll have no problems at all.

Our Verdict

The high quality blade and handle perform well and combined look the part without breaking the bank. If you're looking for performance at a very reasonable price then the Kotetsu is for you.

Over the last few years, knives from the Koutetsu ranges have become quite collectable due to the scarcity of the supply and its excellent performance and price point.

Meet the maker

Koutetsu

Koutetsu knives are the creation of master sharpener Takayuki Shibata, an integral figure in modern Japanese knife making.

Based in Hiroshima, Shibata began his career as a professional sharpener, earning a reputation for producing remarkably consistent, razor-sharp edges. His deep understanding of steel, edge geometry and finishing led him to establish his own brand, Koutetsu – named after Japan’s first iron clad battleship, symbolising strength, innovation and craftsmanship.

Each Koutetsu knife is made in collaboration with skilled blacksmiths and finished by Shibata himself, ensuring an exceptional balance of precision, lightness and performance. Known for their thin blades and refined cutting feel, Koutetsu knives are instantly recognisable for their flawless sharpness straight out of the box.

Beyond his own brand, Shibata is also a key figure in the Japanese knife world, with his own Masakage brand and supporting the distribution of Kurosaki Knives. His work represents the pursuit of perfection in every way.

View all Koutetsu products
  • 5 stars: 2 (50%)
  • 4 stars: 2 (50%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
B
Bishara Sahoury
Incredible knife, an absolute laser

This knife is amazing. I have been using it in a professional capacity and it preforms beautifully. Stays sharp, food falls off if it. The spine is rounded and the choil has a great shape for a pinch grip. It’s been better on my hands than any other knife I’ve worked with. Lightening fast delivery, less than 72 hours from order to arrival

M
Mantas Naujokas
Great knife with it's own character

Cannot use this knife on all ingredients some will start oxidising. The blade stays sharp really comfy grip wise. Just a little note anyone getting first time these knifes are fairly soft and will bend if too much pressure applied. Great first knife so far

Q
Quy

The knife came in pretty sharp otb at like 7/10 and cuts really well. Surprisingly not as well as my Shiro kamo but that may be because I haven’t sharpened it yet. It does release food way better than the kamo though, well more like the kamo didn’t have any food release at all really, tradeoffs of the different grinds I guess.
The blade came kinda bent towards the left, I fixed it but it did leave the neck area a lot less stiff compared to the rest of the knife.
The knife is not that comfortable to me as the part where you rest your middle finger is too far away from the handle and that part being too thin to get a good position on it. Again a trade off.
The handle itself wasn’t the exact one from the picture but I guess those pictures were from old stock, I didn’t mind it that much. There is a noticeable ledge between the front of the handle and the wood part on the right side. You probably won’t get that but I did.
I don’t think any knives can preform much better than this one tho.

Q
Quy

The knife came in pretty sharp otb at like 7/10 and cuts really well. Surprisingly not as well as my Shiro kamo but that may be because I haven’t sharpened it yet. It does release food way better than the kamo though, well more like the kamo didn’t have any food release at all really, tradeoffs of the different grinds I guess.
The blade came kinda bent towards the left, I fixed it but it did leave the neck area a lot less stiff compared to the rest of the knife.
The knife is not that comfortable to me as the part where you rest your middle finger is too far away from the handle and that part being too thin to get a good position on it. Again a trade off.
The handle itself wasn’t the exact one from the picture but I guess those pictures were from old stock, I didn’t mind it that much. There is a noticeable ledge between the front of the handle and the wood part on the right side. You probably won’t get that but I did.
I don’t think any knives can preform much better than this one tho.