Which stainless steel does not rust?

Stainless steel is known for its resistance to rust and corrosion due to the presence of chromium, which forms a protective layer on the surface. The most common types of stainless steel that do not rust are those from the austenitic family, particularly the 300 series stainless steels. These include:

1. 304 Stainless Steel: This is one of the most widely used and versatile types of stainless steel. It contains around 18-20% chromium and 8-10.5% nickel, which provide excellent corrosion resistance. It is often used in kitchen appliances, food processing equipment, and architectural applications.

2. 316 Stainless Steel: This type contains higher levels of chromium (16-18%) and nickel (10-14%) than 304 stainless steel. It offers even better corrosion resistance, making it suitable for marine environments and applications involving exposure to corrosive substances.

3. 317 Stainless Steel: Similar to 316 stainless steel, but with a higher molybdenum content (3-4%). This makes it more resistant to pitting and crevice corrosion, particularly in chloride-rich environments.

4. 904L Stainless Steel: This is a high-alloy austenitic stainless steel with low carbon content and added molybdenum (around 4-5%). It offers exceptional corrosion resistance, especially in sulfuric acid and other aggressive environments.

5.