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Stainless Steel Alloy 347H

Special Alloys > Stainless Steel Alloy 347H

Stainless Steel Type 347H is a stainless steel made of chromium containing high carbon austenitic. Used for applications that needs high temperature resistance. Used for heavy welded equipment when annealing is not possible

Unique properties-

  • Shows Good oxidation resistance property with most of other austenitic stainless steels
  • Higher carbon permits high temperature creep properties


  • Heat exchanger tubes
  • Cabin heaters
  • Heavy wall-welded equipment
  • Aircraft exhaust stacks and collector rings
  • Boiler tubes and casings
  • Oil and gas refinery piping
  • Radiant superheaters
  • High-pressure steam pipes

Chemical Composition-

  • Iron- In balanced form
  • Chromium- Between 17-20%
  • Nickel- Between 9-13%
  • Carbon- Between 0.04-0.08%
  • Manganese- Between 0.5-2.0%
  • Sulfur- Up to 0.30% max
  • Silicon- Up to 0.75% max
  • Phosphorus- Up to 0.03% max
  • Niobium/Tantalum- Up to 1% ma

We supplies Stainless Steel Alloy 254 in a wide range of forms and sizes for instance bars and sheets.  Our alloy products meet all standards of different industries where stainless steel is employed like ASTM, UNS, DIN, and EN.

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