Ratnashri Metals is a leading Supplier, Manufacturer & Exporter of Stainless Steel 347 (UNS S34700 / S34709) Sheet, Stainless Steel 347 Plates, Stainless Steel 347 Coils, Stainless Steel 347 Seamless Pipes, Stainless Steel 347 Railing Pipes, Stainless Steel 347 Welded & ERW pipes & tubes.

Type 347 stainless steel has slightly improved corrosion resistance over type 321 stainless steel in strongly oxidizing environments. Type 347 is stabilized with columbium, it is preferable for aqueous and low temperature environments due to its good resistance to intergranular attack. Both 347 and 321 offer good resistance to polythionic acid stress corrosion cracking, encountered in oil refineries.

In what form is Stainless Steel 347 available at Ratnashri Metals?

Bar

Wire

Sheet

Plate

Forgings

Pipe

Flanges

Mechanical Properties
Chemistry Composition,%

Features

Good creep strength up to 1500°F>

Maintains good corrosion resistance in applications where the temperature is between 800°F and 1500°F.

Good resistance to intergranular corrosion in the as welded condition.

What applications might 347 Stainless Steel be used?

Oil Refineries

Fluid catalytic cracking units (FCC)

Hanger rods

Recuperator tube sheets, shell, supports

Especially where temperatures exceed 550°F and resistance to sulfidation is needed

Fired heater tubes

Distributor trays and thermowells

Equipment in and around reactors (good resistance to polythionic acid)

Mechanical Properties

Minimum Specified Properties, ASTM A 240

Typical Tensile and Impact Properties