Victorinox uses a martensitic stainless-steel alloy variety for their Swiss Army Knives, also known as ‘high-carbon stainless steel’ in many of its knives popularly referred to as Inox. The word Inox basically means stainless. The alloy consists of a high percentage of Chromium which makes the steel shiny and corrosion-resistant. The steel is subjected to high-quality heat treatment to achieve the desired hardness.