SLD steel by Hitachi sits in a genuinely useful middle ground that most cooks have not encountered. It is a semi-stainless tool steel - harder and more wear-resistant than most stainless options, with better corrosion resistance than standard carbon steels. For cooks who want the cutting performance of a hard reactive steel but find the maintenance demands of carbon too high for their kitchen environment, SLD is the answer. Hatsukokoro brings it to the Hikari gyuto in a San Mai construction with soft stainless cladding, and the result is a knife that cuts with clarity and confidence while requiring significantly less reactive maintenance than Blue or White steel alternatives. Hikari means light in Japanese - a name that suits the clean, refined aesthetic of this line.
The spec list on this knife rewards close reading. The primary grind is convex rather than flat, which means the blade surface bows slightly outward behind the edge - a geometry that reduces food sticking and adds some toughness to the edge without sacrificing the thin behind-the-edge profile that makes Japanese knives cut well. The edge is sharpened to 12 degrees per side, which is acute enough to deliver the clean, low-resistance cutting feel that distinguishes Japanese knives from their European counterparts. The satin polish above the shinogi promotes food release and gives the blade a refined, professional look without the reflectivity of a mirror finish. At 4.7 oz and 212mm the knife is well-proportioned - substantial enough for confident extended use, light enough to work comfortably through long prep sessions. The octagonal ebony handle is fitted cleanly and sits well in a pinch grip.
Care Instructions: SLD is semi-stainless with better corrosion resistance than carbon steel, but hand washing and prompt drying after use is still recommended. Avoid the dishwasher. Sharpen on quality water stones - the convex grind responds well to a careful sharpening technique. Strop regularly between sharpenings to maintain the acute edge angle. Avoid bones, frozen foods, and hard surfaces that could chip the edge.
The spec list on this knife rewards close reading. The primary grind is convex rather than flat, which means the blade surface bows slightly outward behind the edge - a geometry that reduces food sticking and adds some toughness to the edge without sacrificing the thin behind-the-edge profile that makes Japanese knives cut well. The edge is sharpened to 12 degrees per side, which is acute enough to deliver the clean, low-resistance cutting feel that distinguishes Japanese knives from their European counterparts. The satin polish above the shinogi promotes food release and gives the blade a refined, professional look without the reflectivity of a mirror finish. At 4.7 oz and 212mm the knife is well-proportioned - substantial enough for confident extended use, light enough to work comfortably through long prep sessions. The octagonal ebony handle is fitted cleanly and sits well in a pinch grip.
- Brand: Hatsukokoro
- Construction: San Mai
- Edge Steel: SLD Semi-Stainless Steel
- Cladding: Stainless
- Grind: Convex, 50/50
- Edge Angle: 12 degrees per side
- Finish: Satin Polish
- Handle: Octagonal Ebony
- Weight: 4.7 oz (134 g)
- Blade Length: 212 mm
- Total Length: 352 mm
- Spine Thickness at Heel: 2 mm
- Blade Height: 49 mm
- Item Number: HIK-G210
Care Instructions: SLD is semi-stainless with better corrosion resistance than carbon steel, but hand washing and prompt drying after use is still recommended. Avoid the dishwasher. Sharpen on quality water stones - the convex grind responds well to a careful sharpening technique. Strop regularly between sharpenings to maintain the acute edge angle. Avoid bones, frozen foods, and hard surfaces that could chip the edge.
