INCONEL alloy 690 is a high-chromium nickel alloy having excellent resistance to many corrosive aqueous media and high-temperature atmospheres. The alloy’s high chromium content gives it excellent resistance to aqueous corrosion by oxidizing acids (especially nitric acid) and salts, and to sulfidation at high-temperatures. In addition to its corrosion resistance, alloy 690 has high strength, good metallurgical stability, and favorable fabrication characteristics.

UNS: N06690
W.Nr.: 2.4642

Technical Bulletin (PDF, 165KB)

Available Product Forms: Pipe, tube, plate, round bar and forging stock

Technical Papers
Alloy Solutions to Metal Dusting Problems in the Petrochemical Industry (PDF, 1.6MB)

Performance of Commercial Alloys in Simulated Waste Incineration Environments (PDF, 1.2MB)

The Role of Protective Scales in Enhancing Oxidation Resistance (PDF, 2.34MB

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