Stainless Steel 347 is an austenitic stainless steel grade that is stabilized with columbium (niobium) to improve its resistance to intergranular corrosion. This material is designed to operate in harsh environments where temperatures can soar, maintaining its structural integrity and performance. The addition of columbium prevents the formation of chromium carbides at the grain bound... https://www.metcoresteel.com/stainless-steel-347-sheets-plates-manufacturer-exporter-suppliers-stockists.html