* Chromium: This is the key element that makes the steel "stainless" by forming a thin, protective oxide layer on the surface that resists corrosion.
* Nickel: Nickel improves the strength and toughness of the steel, making it more resistant to wear and tear.
* Carbon: Carbon is added to increase the hardness and strength of the steel.
* Manganese: Manganese helps improve the steel's machinability and strength.
* Silicon: Silicon enhances the steel's strength and resistance to oxidation.
* Phosphorus: Phosphorus is added to improve the steel's machinability and weldability.
* Sulfur: Sulfur is added to improve the steel's machinability.
Other materials might be used for specific components, such as:
* Brass: Used for handles, scales, or certain smaller parts.
* Plastic: Used for some handles and parts that require more flexibility or insulation.
* Wood: Used for certain traditional models in the handles.
It's important to note that the exact composition of the steel used in Swiss Army Knives can vary slightly depending on the model and the specific tool. However, the general principles remain the same.