1Cr18Ni12 Stainless Steel Composition & High‑Nickel Austenitic Properties

1Cr18Ni12 is a high‑nickel austenitic stainless steel specified in GB/T 4237 and GB/T 4238. With approximately 18% chromium and 12% nickel, it offers a highly stable austenitic structure, excellent corrosion resistance, and superior formability. The grade performs reliably in atmospheric conditions, food‑processing environments, weak acids, and general industrial applications. It is commonly used in pressure vessels, food equipment, architectural components, and mechanical structures. Its deep‑drawing and forming capabilities are superior to many conventional 304‑type grades. 1Cr18Ni12 is available as sheets, coils, tubes, bars, and plates. It is widely used in food processing, light industry, chemical equipment, and manufacturing applications.