Hardening of the steel (at 1060° - 1080°C = 1940° - 1976°F) dissolves chromium carbide molecules, resulting in optimum no-stain properties. In 1939 J.A. Henckels was granted a patent for a new hardenign process: "Ice-hardening" of cutlery has ever since added a new dimension to the manufacturing of quality knives with no-stain properties, under the registered Henckels trademark FRIODUR.
The steel is FRIODUR; the high-carbon, no stain alloy able to resist staines and rust while holdinga professional edge. A first in cutlery.
The Henckels Zwilling trademark is your assurance of quality. It stands for perfection in cutlery and you'll find it on a wide assortment of professional blades.