Core 304/4301 is a classic 18% chromium, 8% nickel austenitic stainless steel. It’s an all-purpose product with good corrosion resistance and is suitable for a wide variety of applications that require good formability and weldability. Core 304/4301 can be delivered with a variety of surface finishes.Core 304/4301 is an austenitic stainless steel, which belongs to the standard CrNi stainless steel family. Core 304/4301 is the basic variant with normal carbon and nickel content.