HD2 Steel

HD2 steel is a semi-stainless steel developed by Hitachi, known for its fine grain structure and excellent performance in Japanese chef knives. Positioned between high-carbon and fully stainless steels, HD2 offers a well-balanced blend of edge retention, sharpenability, and corrosion resistance.

Knives made with HD2 typically have outstanding edge retention thanks to the high carbon content and precise heat treatment used by skilled Japanese blacksmiths. Despite being harder than most Western stainless steels, it’s relatively easy to sharpen and takes on a very fine edge, making it a favourite among professionals who value cutting performance.

HD2 is classified as semi-stainless, meaning it resists rust better than high-carbon steels like White or Blue paper steels, but still requires basic care to avoid staining—especially with acidic ingredients. Overall, it’s an excellent choice for those who want near-carbon steel performance with easier maintenance in a busy kitchen setting.