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Iron Clad

The Shibata Koutetsu isn't just a knife - it's a precision instrument forged from battleship-inspired design. Modeled after Japanese warships, its distinctive k-tip profile and rounded heel deliver exceptional maneuverability. Crafted from ultra-premium R2 steel hardened to 63 HRC, this blade offers legendary edge retention and scary sharpness that lasts.

Master bladesmith Takayuki Shibata - now renowned worldwide for his functional artistry - designed this line for serious performance. The satin-finished blade face minimizes food sticking, while fully rounded spine and heel ensure comfort during extended use. Paired with an elegant rosewood octagonal handle, each Koutetsu knife embodies Shibata-san's "Art over Beauty" philosophy - where flawless function creates true elegance. These are knives designed not just to impress, but to become indispensable kitchen companions.

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Born from Takayuki Shibata's visionary craftsmanship, the Koutetsu line represents a perfect marriage of historical inspiration and modern metallurgical excellence. Named after and modeled after Japanese battleships ("koutetsu"), these knives feature a distinctive k-tip profile and rounded heel that echo warship silhouettes while providing exceptional control and precision in the kitchen.

At the heart of every Koutetsu knife lies premium R2 powder steel, hardened to an impressive 63 HRC. This advanced steel composition delivers what professional chefs prize most: extraordinary edge retention combined with the ability to achieve and maintain a razor-sharp cutting edge. The blade's satin finish isn't just for looks - it's meticulously applied to enhance food release, while the fully rounded and polished spine and heel ensure comfort during hours of continuous use.

Takayuki Shibata's journey from knife seller to internationally revered bladesmith informs every aspect of the Koutetsu's design. His "Art over Beauty" philosophy shines through in the knife's purposeful aesthetics - the elegant rosewood octagonal handle isn't merely decorative, but carefully shaped for perfect balance and grip. The clean lines and uncluttered design reflect Shibata-san's belief that true beauty emerges from flawless functionality.

What sets the Koutetsu apart is its remarkable thinness and precision grind - characteristics that make it one of the highest-performing knives in professional kitchens worldwide. Yet despite its exceptional sharpness and delicate appearance, the R2 steel core provides surprising durability. It's this combination of traits - historical inspiration, advanced materials, and masterful execution - that has made Shibata's Koutetsu line a favorite among Michelin-starred chefs and serious home cooks across more than 20 countries. More than just a cutting tool, each Koutetsu knife represents the culmination of one man's lifelong dedication to perfecting kitchen performance.

Iron Clad — Fukuyama
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Est. 2009

Knives by Iron Clad

Shibata Koutetsu SG2

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

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St Peters

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Unit 2, 2 Bishop St
St Peters, NSW 2044
(02) 8234 8818 sales@knivesandstones.com.au
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107 West St
Crows Nest, NSW 2065
(02) 8234 8848
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Kakumei
Unit 3, 32 Lonsdale St
Braddon, ACT 2612
(02) 8234 8808
Wed–Thu 10:30am–4:30pm Fri–Sat 10:30am–6pm Sun 10:30am–4:30pm Closed Mon & Tue
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