1Cr18Ni9 Stainless Steel Composition & General‑Purpose Austenitic Properties

1Cr18Ni9 is a classic austenitic stainless steel specified in GB/T 4237 and GB/T 4238. With approximately 18% chromium and 9% nickel, it provides a balanced combination of corrosion resistance, formability, and weldability.

The grade performs reliably in atmospheric environments, freshwater systems, food‑processing equipment, and general industrial applications. It is commonly used in kitchen equipment, architectural components, pressure vessels, mechanical parts, and piping systems.

1Cr18Ni9 is available as sheets, coils, tubes, bars, and plates. It remains a widely used stainless steel material across food, construction, manufacturing, and light‑industry sectors.