INCONEL® Alloy 690

2.4642

UNS N06690

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.

Limiting
Ni¹ min. 58.0 %
Cr 27.0 - 31.0 %
Fe 7.0 - 11.0 %
Cu max. 0.50 %
Mn max. 0.50 %
Si max. 0.50 %
C max. 0.05 %
S max. 0.015 %
       
¹ Plus Co      
Density
g/cm³   8.19
lb/in³   0.296