Kotetsu Hamon 19C27 Petty 150mm

Kotetsu Hamono, formerly known as Minamoto Kotetsu Hamono, built the Kumadori line around a steel that most of the Japanese knife world overlooks in favor of more familiar names. 19C27 is a Swedish stainless produced by Sandvik — carbon-rich enough to take a keen edge and sharpen quickly on water stones, stainless enough to handle a professional kitchen environment without reactive care. At HRC 60-61 the heat treatment is dialed in well above most entry-level stainless knives, and the hamon — the visible temper line running the length of the blade — reflects the differential hardening that gives the cutting edge its performance characteristics. It is one of the more distinctive looking knives at CKTG in its price range, and it backs up the aesthetics with real cutting performance.

This 152mm petty is laser cut from san mai construction with a 19C27 stainless core clad in stainless steel on both sides. The blade geometry is thin and well executed at 2mm at the heel, with a 30mm blade height that keeps the profile nimble and responsive for both board work and in-hand tasks. At 2.8 oz the knife is genuinely light, which makes it comfortable across extended use and well suited to smaller hands as well as larger ones. The western handle is fitted with black pakka wood scales that are durable, moisture resistant, and cleanly finished. The combination of the hamon, the fit and finish, and the price point makes this one of the more visually compelling knives at CKTG in its category.

What Customers Are Saying: Professional cooks and home users alike describe this as a knife that earns a permanent place in their kit quickly. The sharpening response draws particular attention — multiple owners describe it as the easiest stainless they have worked with on water stones, with one professional cook noting it holds a razor edge through sustained line use and resharpens without resistance. The looks draw as much comment as the performance, with several buyers noting the knife is even more attractive in person than in photos. One reviewer bought it specifically as a knife small enough for their partner to use comfortably and describes it delivering on every front. The overall consensus is strong value, strong performance, and a knife that is difficult to set down once it is in rotation.

Care Instructions: 19C27 stainless steel is low maintenance and corrosion resistant under normal kitchen conditions. Hand wash and dry after each use — avoid the dishwasher. Sharpen on quality water stones; the steel responds quickly and rewards good technique with an excellent edge. Strop regularly between sessions to maintain performance.

• Maker: Kotetsu Hamono
• Location: Seki City, Japan
• Line: Kumadori
• Construction: Laser Cut, San Mai
• Core Steel: 19C27 Stainless
• Cladding: Stainless Steel
• HRC: 60-61
• Finish: Hamon
• Edge Grind: Double Bevel
• Handle: Western (Yo)
• Scales: Black Pakka Wood
• Blade Length: 152mm
• Total Length: 264mm
• Spine Thickness at Heel: 2mm
• Blade Height: 30mm
• Weight: 2.8 oz (80g)