The most common grades are 18/10, 18/8, and 18/0. The first number represents the chromium content (18%), which provides corrosion resistance, while the second number represents the nickel content, which adds luster and additional rust resistance. For high-end B2B sourcing, 18/10 (304 grade) is the industry standard for durability and shine. 18/0 (430 grade) is more economical and magnetic, making it suitable for high-volume catering or use with magnetic dishwashing retrieval systems, but it is more prone to staining over time.