Collector rings, airplane exhaust stacks, annealing box covers, jet engine parts, expansion joints, tubing, fasteners, flexible metal hose and bellows

Type 347 is a stabilized austenitic stainless steel similar to type 304 with an addition of Columbium and Tantalum. The columbium serves to produce a stabilized type of stainless steel which is immune to chromium carbide precipitation. This type of grades are thus recommended for parts fabricated by welding which cannot be subsequently annealed or for parts which must operate in service between 800 - 1600 °F.