STAINLESS STEEL

AISI 347 | EN 1.4550

AISI 347 | EN 1.4550

Description

Stainless Steel 347 is a austenitic chromium stainless steel. Usually found in applications that demand high temperature resistance. It has similar resistance and corrosion protection as stainless steel grade 304. It is used for heavy welded equipment when annealing is not possible.

ASTM 347 stainless steel is a stabilized austenitic stainless steel that contains niobium, which enhances its corrosion resistance and high-temperature strength. Niobium forms carbides with carbon, which prevents the formation of chromium carbide and protects the grain boundaries from intergranular corrosion. The addition of niobium also improves the steel's resistance to pitting and crevice corrosion.

The alloy showcases good oxidation resistance, on par with most other austenitic stainless steels like 304, 316, 317L, and 321. It is reasonable to expect specifications in these standards to be similar but not necessarily identical to those given in this data sheet.

Applications of 347

  • Boiler Tubes and Casings
  • Oil and Gas Refinery Piping
  • Radiant Superheaters
  • High-Pressure Steam Pipes
  • Heat Exchanger Tubes
  • Petrochemical industry: Heat Exchangers, Reaction Vessels, Piping Systems, etc.
  • Cabin Heaters
  • Power generation: gas turbine components, boiler tubes, exhaust systems, etc
  • Heavy Wall-Welded Equipment
  • Aircraft Exhaust Stacks and Collector Rings
Download Datasheet

EQUIVALENT STANDARDS

AISI ASTM EN DIN UNS IS
347 347 1.4550 X6CrNiNb18-10 S34700 X04Cr18Ni10Nb

CHEMICAL PROPERTIES

C S P Ni Cr Si Nb Mn Cu
0.08 0.03 0.045 10 18 1 1 1

MECHANICAL PROPERTIES

YSRp02 TSRm A HRB
205 515 40 95

Available Forms Of AISI 347 | EN 1.4550

SheetsSheets Hover Turn
CoilsCoils Hover Turn
Round PipesRound Pipes Hover Turn
FlangesFlanges Hover Turn
Hex BarsHex Bar Hover Turn
Hex BarsHex Bar Hover Turn
Chequered SheetChequered Plate Hover Turn
FittingsFittings Hover Turn
Square BarsSquare Bars Hover Turn
Square Rectangle Pipes TubesShape Pipes Hover Turn

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