Stainless steel plate, a corrosion-resistant iron-based alloy with a minimum 10.5% chromium content, forms a protective passive oxide film on its surface to resist rust and erosion. Common grades include 304 (06Cr19Ni10) with 18%-20% Cr and 8%-10.5% Ni, and 316 with added molybdenum for seawater resistance. It features excellent plasticity, weldability and durability, widely used in food processing, construction and chemical industries.