Nickel alloy Inconel 690 has outstanding resistance to oxidizing chemicals and to high-temperature oxidizing gases. And it has resistance to stress corrosion cracking in chloride-containing environments as well as to sodium hydroxide solutions. Alloy 690 is used for applications such as coal-gasification units, burners and ducts for processing sulfuric acid, furnaces for petrochemical processing, incinerators and so on.
Specification
Chemical composition
| Grade |
% |
Ni |
Cr |
Fe |
C |
Mn |
Si |
Cu |
S |
| 690 |
Min |
58 |
27 |
7 |
|
|
|
|
|
| Max |
|
31 |
11 |
0.05 |
0.5 |
0.5 |
0.5 |
0.02 |
Mechanical properties:(Minimum value at 20°C)
| Tensile Strength |
Yield Strength |
Elongation |
| σb/MPa |
σp0.2/MPa |
σ5 /% |
| 580 |
260 |
30 |
