ApexUltra, a high carbon steel for forging, was released in 2022.
This steel is a high carbon steel designed for forging, and by forging it can be obtained high toughness and wear resistance.

The composition of this steel has a balance of chromium, tungsten, and vanadium, which is the source of the increase in toughness and wear resistance, and it has a performance that is as if the high toughness carbon steel 52100 and the highly wear-resistant Aogami Super were crossed.

By forging, it is possible to finish it into a very fine structure like powder steel, and it is possible to bring out not only toughness and wear resistance but also tremendous sharpness.
The HRC hardness of this ApexUltra is up to 68 HRC, and when compared to other steels, ApexUltra has the strongest toughness value of 66 HRC or more.
That means making it an even tougher, thinner and sharper blade than other steels.

ISZ KNIVES is particular about hand forging. The hardness is set to 66HRC. The corrosion resistance is not good because it is a high carbon steel, but compared to other high alloy steels, it is less prone to pitting corrosion, which is unique to low alloy carbon steels, and like. It is recommended for users who want a steel with a long and rich flavor.

ApexUltra is a high-performance forged carbon steel that can compete on equal terms with modern high-tech steels.