Carbon steel knives: sharpness with character

Carbon steel is Japan's traditional knife steel: it can be ground to a very fine edge, provides direct feedback, and is easy to resharpen. In return, it reacts to moisture and develops a patina over time, which is part of the blade's character.

At ISSHO TABERU, four lines work with carbon steel: the lightweight Gyuto line made of SK85 with 60 HRC, the Izutsuki line with blue Yasugi paper steel (66 HRC) and V2 special steel from Takefu, Masamoto made of Shirogami No. 2 (63 HRC), and the Marco Special line made of Shirogami with a Honbazuke finish.

Important for context: Despite its name, the Carbon line does not belong here. Its carbon steel is made rust-resistant through nitrogen and nitride, making it one of the low-maintenance lines. Those who choose pure carbon steel are opting for uncompromising sharpness and consciously accept the need for daily care.

Frequently Asked Questions About Carbon Steel Knives

What distinguishes carbon steel from stainless steel?

Carbon steel can be ground to a particularly fine edge and provides a direct cutting feel, but it reacts to moisture and acid. Rust-resistant steels like the special VG10 core of the Damascus line are more forgiving and require less maintenance.

Does a carbon steel knife rust?

Without care, it can rust. If you wipe the blade dry immediately after use and occasionally treat it with mineral oil, you will get an even patina instead of rust. This is normal and is part of the blade's character. You can rub off a rust spot with a wine cork and a little cream soap.

Is the Carbon line a carbon steel knife?

No, and that is precisely its advantage in everyday use: its carbon steel is made rust-resistant through nitrogen and nitride (61 HRC). It offers the sharpness characteristics of a carbon steel without the maintenance requirements of pure carbon steels.

Who is carbon steel worthwhile for?

For those who seek maximum sharpness and direct feedback and are prepared to wipe the blade dry after every use. Enthusiasts also appreciate how uncomplicated it is to resharpen these steels on a whetstone.

How do I maintain a carbon steel knife?

Rinse and wipe dry immediately after use, treat occasionally with mineral oil, store in a dry place, never put in the dishwasher. A wine cork and some cream soap will help with any rust spots. This will keep the blade in use for decades.

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