First of all it is stainless…
… it does not oxidize, meaning it does not rust.
Stainless steel owes this characteristic to the presence of chromium (minimum 10.5%). When stainless steel is exposed to oxygen from the air or water, its surface is covered by a layer of chromium oxide, known as a “passivating film” in technical jargon. This layer protects the stainless steel object from many aggressive substances, and reforms if damaged.
Stainless steel is resistant to the most common sanitising products on the market and used in the health sector. This means that it is possible to act decisively against viruses and bacteria, and it also means that it is possible to repeat cleaning operations several times a day, without risking damage to the surfaces.