What are the blade lengths and steel materials of Japanese sashimi knives?

A question related to the sashimi processor in Japanese cuisine is about “What are the blade lengths and steel materials of Japanese sashimi knives?”

The common regular sizes of Japanese sashimi knives include five length sizes: 210mm, 240mm, 270mm, 300mm, and 330mm.

In addition, with the advancement of material science, many new knife materials have appeared in recent years, but the more old-school knife makers still prefer more traditional knife steel materials, including yellow paper steel (commonly used in traditional farm tools), white paper steel (divided into white one and There are five types of white steel (white two), green steel (also divided into green ㄧ, green two and super green steel (that is, green paper)), silver paper steel (with chromium added to become stainless steel), and multi-layer steel (Gulai jade steel).