Contact Us (302) 366-0675 Team@EastCoastStainless.com Products Alloys About ECS Technical Resources Request A Quote ALLOYS HOME ALLOYS 347/347H (UNS S34700/S34709) 347/347H (UNS S34700/S34709) These stainless alloys are austenitic chromium steels containing columbium. The addition of columbium produces a stabilized type of stainless that eliminates carbide precipitation, and consequently, intergranular corrosion. They are recommended for parts fabricated by welding, that cannot be subsequently annealed. They also are used for parts,that can be intermittently heated and cooled to temperatures between 800° and 1600° F. Availability – Stainless Steel 347/347H Seamless Pipe :1/2” – 12” Weld Pipe :8” – 12” Butt-Weld Fittings :1/2”-12” Butt-Weld Flanges : 1/2″ – 12″ Bar : 1” – 12” Specifications – Stainless Steel 347/347H ASTM A312, A403,A182, A479, A276 ASME SA312, SA403, SA182 SA479, SA276 Chemical Composition – Stainless Steel 347/347H C Co Cr Mn Ni P S Si Ta Max Max Max Max Max 0.08% Trace* 17.0 – 19.0 2.0% 9.0 – 13.0% 0.045% 0.030% 1.00% Trace* Typical Applications – Stainless Steel 347/347H High temperature chemical process Heat exchanger tubes Refineries High temperature steam service Tensile Requirements – Stainless Steel 347/347H Tensile Strength (KSI): 75 Yield Strength (KSI): 30 KSI can be converted to MPA (Megapascals) by multiplying by 6.895. First Name Company Name (required) Phone Number (required) Your Email (required) Which of the following are you interested in? Check All That Apply Pipe & Tubing Valves Fittings Flanges Sanitary Products Comments Upload Files Contact Us Team@EastCoastStainless.com Phone: (302) 366-0675 Fax: (302) 366-0691 Links Home About ECS Contact Us Terms & Conditions Privacy Policies © Copyrights 2019, All Rights Reserved. NEWSLETTER