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Stainless & Bi-Metal
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Inconel Alloy 690

Common Trade Names: Inconel 690, Alloy 690, Nickel 690

INCONEL alloy 690 - UNS N06690 Werkstoff No. 2.4642 is a high-chromium nickel alloy having excellent resistance to many corrosive aqueous media and high- temperature atmospheres. In addition to its corrosion resistance alloy 690 has high strength, good metallurgical stability and favorable fabrication characteristics

  • The substantial chromium content gives the alloy outstanding resistance to oxidizing chemicals and to high-temperature oxidizing gases
  • The high level of nickel imparts resistance to stress- corrosion cracking in chloride-containing environments as well as to sodium hydroxide solutions
  • In various types of high-temperature water, alloy 690 displays low corrosion rates and excellent resistance to stress-corrosion cracking
Typical Applications:
  • tail-gas reheaters used in nitric acid production and heating coils and tanks for nitric/hydrofluoric solutions used in pickling of stainless steels and reprocessing of nuclear fuels
  • coal-gasification units
  • burners and ducts for processing sulfuric acid
  • furnaces for petrochemical processing, recuperators, incinerators, and glass vitrification
  • equipment for radioactive waste disposal
  • steam generator tubes, baffles, tubesheets, and hardware in nuclear power generation
Product Forms:
  • Plates
  • Round Bars
  • Pipes and tubes
Inconel 690 is a Registered Trademarks of Special Metals Corporation and Its subsidiaries

Trademark Notice: Some names that are listed in this site are trade names and/or trademarks of specific manufacturers. The names are listed solely for reference to help identify products consistent with listed specifications. Steel Holdings Corporation Ltd. is not affiliated with any manufacturer(s) and will fulfill orders to meet specifications from any available source(s)

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