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Inconel 690 Nickel Alloy

The Inconel 690 nickel alloy has outstanding resistance to many corrosive aqueous media and high temperature environments. High chromium content gives alloy 690 superior corrosion resistance to oxidizing acids (nitric acid in particular) and salts and to sulfidation at high temperatures. The high chromium alloy also has excellent resistance to intergranular corrosion and intergranular stress corrosion cracking.

In addition to corrosion resistance, it features high strength and perfect fabrication properties. Such properties make this high performance nickel alloy suitable for heat transfer pipes of vapor generator in pressurized water reactor nuclear power plant.

Specifications of Inconel 690 Nickel Alloy
UNS W. Nr
N06690 2.4642
Chemical Compositions
Composition Ni Cr Fe C Mn Si Cu S
Content (%) Min. 58.0 27.0 7.0 0.05
Max. 31.0 11.0 0.5 0.5 0.5 0.015
Mechanical Properties (Minimum value at 20℃)
Tensile Strength (σb/MPa) Yield Strength (σp0.2/MPa) Elongation (σ5/%)
580 260 30
Product Forms and Standards
Bar Forging Sheet/Strip Pipe
ASTM B166 ASTM B564 ASTM B168 ASTM B163
ASTM B829
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