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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.
Specification 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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