347/347H Stainless Steel

WLD Steel is a leading manufacturer, supplier and exporter of the stainless steel 347/347H available in a number of different sizes and forms including pipe, tube, sheet, plate, bar, rod and formed shapes like angel, channel, beam and so on. Austenitic stainless steel 347 is a type of high carbon alloy with the addition of Niobium. 347H stainless steel is a higher carbon version of the 347 steel and the higher carbon allows for better high temperature creep properties. The addition of Nb making it has good intercrystalline corrosion resistance, especially to corrosive media such as acid, alkali and salt. Its corrosion resistance is similar to Austenitic stainless steel 321 with Ti addition, has been widely used in heat exchanger, superheater pipe, reheater pipe, steam pipe in the boiler of power generation, petroleum, chemical industry, synthetic fiber, food and paper industry.

What’s the 347/347H available forms and specifications at WLD Steel?

Sheet/Plate/Coil Seamless Pipe/Tube Welded Pipe/Tube Round Bar Formed Steel(Shaped)
ASTM A240

ASTM A480

ASTM A789

ASTM A790

ASTM A928 ASTM A276

ASTM A479

ASTM A276

347/347H Steel Equivalent Materials

Grades C Cr Mn Ni P S Si Cb/Ta
347 0.08 max 17.0-20.0 2.0 max 9.0-13.0 0.04 0.30 0.75 0x C-1.0
347H 0.04- 0.10 17.0-20.0 2.0 max 9.0-13.0 0.03 0.30 0.75 10x C- 1.0

347/347H Chemical Composition

Grades C Cr Mn Ni P S Si Cb/Ta
347 0.08 max 17.0-20.0 2.0 max 9.0-13.0 0.04 0.30 0.75 0x C-1.0
347H 0.04- 0.10 17.0-20.0 2.0 max 9.0-13.0 0.03 0.30 0.75 10x C- 1.0

347/347H Mechanical Properties

Grade Tensile Strength (MPa) Yield Strength (MPa) Elongation % Hardness (Brinell) MAX
347/347H 515 205 40 201