Iron Clad

Art Over Beauty

Shop Iron Clad knives

Iron Clad/Koutetsu is the made-in-house brand by Shibata Knives, bearing the motto “Art Over Beauty”, it’s a sharpening/grinding focus brand that known for its Hatsuke(刃付け, bevel-making) skill. The sharpener and leader Takayuki Shibata was the founder of Shibata Knives and other sister brands of Iron Clad, including the highly praised Masakage and the value-focused Tsunehisa.

The knife offered by Iron Clad are engraved with 崇行, which is Shibata’s first name Takayuki. Each Iron Clad knife is grinded by hand sharpening on rotary stone to produce the excellent geometry that Shibata-san developed through years of his experience on sharpening. These knives are generally referred as Koutetsu SG2/AS/Chromax, they share a similar profile, finished uniformly with Migaki finish and sharpened with Shibata’s unique differential grit sharpening technique to get a smooth yet bitey edge. The knives under the banner of Koutetsu are elegant and simple while great in performance, building Iron Clad a fame for its professional oriented designs.

“The concretisation of Shibata Knives' motto "Art Over Beauty", produced in-house with top of the line cutting performance and finishing quality.”

Est. 2009 | 平成21年

Known for Highly functional, performance orient knives with very thin blades

Website shibataknives.com Instagram @knife_gallery.jp

People

Founder: Takayuki Shibata 柴田崇行
Current Head: Takayuki Shibata 柴田崇行

Craft

Known For: Highly functional, performance orient knives with very thin blades
Steel: SG2 / Chromax

Location

Address: Japan, 720-2122 Hiroshima, Fukuyama, Kannabecho, Shinyuno−６４−4
Region: Fukuyama, Japan
Coordinates: 34.55509, 133.39127

Brand

Logo

Native Name

株式会社アイロンクラッド

Why Iron Clad Matters

A independent brand that marks the production of made-in-house product that truely represent the understanding and knowledge of Takayuki Shibata. It offers products that absorbs the distilled understanding of sharpness by one of the key member in the industry, and sets a golden standard for performance oriented knives.

Does Iron Clad Allow Unsolicited Visits?

Knife Gallery (knife-gallery.com) is the retail arm of Iron Clad. There shop front is open to the public, however there is no known workshop visits.

Knives by Iron Clad

Shibata Koutetsu SG2

Master Shibata Takayuki’s Koutetsu(甲鉄, Ironclad) SG2 line embodies his motto: "Art Over Beauty." These ultra-thin lasers glide effortlessly through... Read more

Master Shibata Takayuki’s Koutetsu(甲鉄, Ironclad) SG2 line embodies his motto: "Art Over Beauty." These ultra-thin lasers glide effortlessly through food, resisting stickage with their hazy, textured finish and a well tuned geometry. Every blade is hand-ground and sharpened by Shibata himself—ensuring insane sharpness and flawless finish.The unique design choice Shibata made about this line is having Kiritsuke-style tip applied to all of the knives in the line, this design pays homage to Japan’s historic Koutetsu(Ironclad) warship—built for armour and power. Yet these knives are featherlight and agile, with a rather thin spine and even thinner bevel. The profile according to Shibata is designed to find the perfect balance in edge curvature between the dead flat Nakiri and curvy Gyuto - two of his favourite profiles that he likes and wants to improve upon. The gently curved edge on these knives you’d find can comfortably rock and slice in pulling motion like a Gyuto, but can also chop through ingredients with much less chance of bits connected like a Nakiri.Shibata’s priority in performance shines on this line: almost every detail, from the surface finish to geometry, is aimed to have the lowest cutting resistance possible. The reduced thickness not only leads to a featherlight handling, but also minimises resistance when you wedge the knife into a very dense food. The usual downside for thin blades it, their bevels are generally flat, and there aren’t many steels that allow the maker to create a bulging convex/sudden change in geometry to encourage food release. However, Shibata with his extensive sharpening experience seems to have found an optimal convex shape that can achieve a noticeable level of food release, he also uses a more coarse Migaki(brushed) finish to further reduce the sticking. The Koutetsu line excels in all kinds of cutting tasks, yielding a super smooth cutting feeling in them. This isn’t just a knife—it’s a cutting masterpiece.Supporting this design is the Takefu Special Metal’s classic formula: SG2 powdered stainless steel, boasting excellent wear resistance and hardness, this is the foundation that allows Koutetsu to be built so thin, and produce a great cutting edge that lasts weeks in a professional setting. This core steel is cladded between two pieces of plain stainless steel, almost blended into them after the brushed finish is applied. With no fancy Damascus cladding or surface treatment like etching or sandblasting, this finish sticks to the core of Shibata’s knifemaking philosophy: Art Over Beauty. But in all honesty, this extremely uniform finish when paired with mirror polished spine and choil, is a beauty by itself.For those who prioritize performance, the Koutetsu delivers: razor-sharp, comfortable, and engineered to excel, this applies specially for professionals. Due to the thinner blade, Koutetsu would still maintain a low thickness behind the edge after a dozen times of sharpening, which means in intense use, it maintains its cutting performance even better. As this is a very hand made knife, if you happen to see one available in your desired profile, consider grabbing it as it doesn’t appear often. Read less

Pros

Excellent performance
Thin behind the edge
Great OOTB
Exceptional profile

Cons

Relatively hard to sharpen
High budget

Sanmai - Stainless Clad Migaki

Shibata Koutetsu Chromax

Master Shibata Takayuki’s Koutetsu(甲鉄, Ironclad) Chromax line embodies his motto: "Art Over Beauty." These ultra-thin lasers glide effortlessly thr... Read more

Master Shibata Takayuki’s Koutetsu(甲鉄, Ironclad) Chromax line embodies his motto: "Art Over Beauty." These ultra-thin lasers glide effortlessly through food, resisting stickage with their hazy, textured finish and a well tuned geometry. Every blade is hand-ground and sharpened by Shibata himself—ensuring insane sharpness and flawless finish.The unique design choice Shibata made about this line is having Kiritsuke-style tip applied to all of the knives in the line, this design pays homage to Japan’s historic Koutetsu(Ironclad) warship—built for armour and power. Yet these knives are featherlight and agile, with a rather thin spine and even thinner bevel. The profile according to Shibata is designed to find the perfect balance in edge curvature between the dead flat Nakiri and curvy Gyuto - two of his favourite profiles that he likes and wants to improve upon. The gently curved edge on these knives you’d find can comfortably rock and slice in pulling motion like a Gyuto, but can also chop through ingredients with much less chance of bits connected like a Nakiri.Shibata’s priority in performance shines on this line: almost every detail, from the surface finish to geometry, is aimed to have the lowest cutting resistance possible. The reduced thickness not only leads to a featherlight handling, but also minimises resistance when you wedge the knife into a very dense food. The usual downside for thin blades it, their bevels are generally flat, and there aren’t many steels that allow the maker to create a bulging convex/sudden change in geometry to encourage food release. However, Shibata with his extensive sharpening experience seems to have found an optimal convex shape that can achieve a noticeable level of food release, he also uses a more coarse Migaki(brushed) finish to further reduce the sticking. The Koutetsu line excels in all kinds of cutting tasks, yielding a super smooth cutting feeling in them. This isn’t just a knife—it’s a cutting masterpiece.Supporting this design is the Chromax steel, a formula that has many names to it like V Gin 1, VS1, SKD/SKD12 or A2. As an alloy carbon steel, its original design intention as a tool steel gives it high toughness, high wear resistance and decent hardness, this is the foundation that allows Koutetsu to be built so thin, and produce a great cutting edge that performs very well especially on soft materials. This core steel is cladded between two pieces of plain stainless steel, almost blended into them after the brushed finish is applied. With no fancy Damascus cladding or surface treatment like etching or sandblasting, this finish sticks to the core of Shibata’s knifemaking philosophy: Art Over Beauty. But in all honesty, this extremely uniform finish when paired with mirror polished spine and choil, is a beauty by itself.For those who prioritize performance, the Koutetsu delivers: razor-sharp, comfortable, and engineered to excel, this applies specially for professionals. Due to the thinner blade, Koutetsu would still maintain a low thickness behind the edge after a dozen times of sharpening, which means in intense use, it maintains its cutting performance even better. As this is a very hand made knife, if you happen to see one available in your desired profile, consider grabbing it as it doesn’t appear often. Read less

Pros

Excellent performance
Thin behind the edge
Great OOTB
Exceptional profile

Cons

Prone to rust
High budget

Sanmai - Stainless Clad Migaki

Tinker

Tinker is Shibata-san’s playground — a brand launched in 2018 dedicated to experimental knife shapes that don’t fit neatly into any existing line. Where the ... Read more

Tinker is Shibata-san’s playground — a brand launched in 2018 dedicated to experimental knife shapes that don’t fit neatly into any existing line. Where the Koutetsu series focuses on perfecting the laser gyuto formula, Tinker throws the rulebook out and asks: what if a deba met a cleaver? What if a honesuki had a curved breaking-knife tip? Each Tinker knife is a one-off concept, always limited edition, and never repeated as a full production line.The blades are hand-forged by blacksmith Takumi Ikeda using Aogami Super steel at around HRC 63, clad in mild stainless for easier maintenance. The kurouchi finish is left deliberately rustic — like something a backyard blacksmith might produce — but look closer and you’ll find the spine and choil mirror-polished to a gleam. That contrast sums up Shibata’s "Art Over Beauty" philosophy perfectly: rough where it counts for performance (the kurouchi reduces friction and sticking), refined where it matters for comfort. Handles are octagonal rosewood, sometimes paired with cherry.The lineup reads like a menagerie: the Tank is a tough, compact chuka that doubles as an outdoor workhorse; the Barracuda is a hybrid honesuki with the curved tip of a breaking knife; the Sabertooth channels a hanging butcher’s knife; and there’s the Chibi Tank, Mini Tank, and Iron Horse rounding things out. None of these shapes existed in Shibata’s catalogue before — they were born from conversations with chef friends who wanted tools that nobody else was making.Because of the limited production and hand-forged nature, Tinker knives don’t sit on shelves long. If you spot one in a shape you like, it’s worth acting on — the next batch could be months away, if it comes at all. Read less

Pros

Excellent performance
Highly collectable
Great artistic
Great OOTB

Cons

High budget
Need extra care
Semi-stainless can rust

Sanmai - Stainless Clad Kurouchi

Kouki Blue 2 Kurouchi

Kouki Hashimoto is a name to keep an eye on. Having worked as an instructor at Kajiya Soseijuku — the Tosa Forged Blade School — before establishing his own ... Read more

Kouki Hashimoto is a name to keep an eye on. Having worked as an instructor at Kajiya Soseijuku — the Tosa Forged Blade School — before establishing his own brand in 2025, Hashimoto comes to independent knifemaking with a deeper grounding in the craft than most newcomers. Teaching forging demands a thorough understanding of what makes a knife work, and that foundation shows clearly in this Blue 2 Kurouchi line. For a first independent release, it punches well above what you'd typically expect.The construction is a classic Sanmai with soft iron cladding over a Blue 2 (Aogami 2) core — honest about its maintenance requirements. Both the iron cladding and the reactive core steel need regular attention to stay rust-free, which is the trade-off you accept for that characterful Kurouchi finish and the aggressive edge that Blue 2 delivers. The forged taper in the spine is well executed, and the short length gives the blade a nimble, responsive feel that makes it easy to direct with precision.The geometry is genuinely impressive for this price. Minimal thickness behind the edge makes for clean food penetration, and the low Shinogi line means food release kicks in reliably even on shorter cuts — the slice doesn't need to travel far up the bevel before it starts to peel away. Where this design is more honest about its limits is against dense, tough produce like sweet potato or carrot — the narrow bevel creates a steeper angle from the Hira, which causes more wedging as the blade pushes through denser material. On softer everyday prep though, it cuts noticeably better than most Tosa-made Kurouchi knives at a similar or higher price point.For enthusiasts looking for an entry point into forged carbon steel knives, or for anyone after a gift with genuine craft behind it and a story worth telling, the Kouki line is a very easy recommendation. Read less

Pros

Excellent performance
Budget friendly
Thin behind the edge

Cons

Prone to rust

Sanmai - Soft Iron Clad Kurouchi

Iron Clad Arare SG2 Tsuchime

Arare (霰, Small Hail) is a fitting name — looking at the blade, the surface of the Hira is covered in a dense field of small, geometric square and diamond-sh... Read more

Arare (霰, Small Hail) is a fitting name — looking at the blade, the surface of the Hira is covered in a dense field of small, geometric square and diamond-shaped indentations with defined, sharp edges arranged in a tight repeating pattern. The texture meets the Shinogi line where it gradually fades as the bevel thins out during grinding and polishing, leaving the Migaki finished bevel below in clean contrast with the textured Hira above. It's a more considered and refined take on Tsuchime than the organic, irregular hammer marks you'd typically find, and if the pattern looks familiar, it's not a coincidence — a very similar texture appeared on a special edition of the Minamo SG2 line, which hints at a shared manufacturing origin, likely somewhere within the Takefu Knife Village network that Shibata has strong connections to.The line is curated by Shibata, and the execution reflects his priorities clearly. The spine sits at a slim 2mm, paired with a concave grind that brings the bevel down to a low thickness behind the edge. Food release is handled by the Shinogi line — as the slice reaches that geometrical transition the food peels away cleanly, and the concave geometry keeps the thickness low enough that the knife doesn't wedge badly even in denser produce. It's a well-balanced geometry that performs beyond its price bracket and now competing for the best value knife we are currently selling.The core steel is SG2 (also known as R2), one of the most capable powder stainless steels in the industry — excellent edge retention, full stainlessness, and a hardness that supports the thin geometry well. At 299 AUD for a 210mm Gyuto, this is genuinely exceptional value for an SG2 knife with this level of finish and sharpening behind it, sitting at a lower price than the Ryuhyo line while offering an arguably more characterful surface and comparable cutting performance. Read less

Pros

Budget friendly
Excellent performance
Ideal entry point to Japanese knives

Cons

A little bit brittle
Relatively hard to sharpen

Sanmai - Stainless Clad Tsuchime

Frequently Asked Questions about Iron Clad

Who is Iron Clad?

Iron Clad is a Japanese knife maker based in Fukuyama, Japan , established in 2009. They are known for Highly functional, performance orient knives with very thin blades. Their signature steels include SG2 / Chromax. Available at Knives and Stones Australia.

What knives does Iron Clad make?

Iron Clad produces the following knife lines: Shibata Koutetsu SG2 , Shibata Koutetsu Chromax, Tinker, Kouki Blue 2 Kurouchi, Iron Clad Arare SG2 Tsuchime. We currently carry 29 products from Iron Clad at Knives and Stones. They specialise in Highly functional, performance orient knives with very thin blades.

Where is Iron Clad located?

Iron Clad is located in Fukuyama, Japan. Japanese knife-making regions each have distinct traditions.

Where can I buy Iron Clad knives in Australia?

Knives and Stones is an authorised Australian stockist of Iron Clad. You can shop online at knivesandstones.com.au with free shipping on orders over $99, or visit our stores in St Peters (Sydney), Crows Nest (Sydney) and Braddon (Canberra) to handle the knives before buying.