Inconel 690 Nickel Alloy
Inconel 690 (UNS N06690) is a high-chromium (28-31%) nickel-based alloy, specially designed to resist high-temperature oxidation and stress corrosion cracking. It performs exceptionally well in harsh alkaline and high-temperature water environments such as steam generator tubes in nuclear power plants and chemical equipment. Its low carbon content optimizes the intergranular corrosion resistance in the welding zone.
Chemical Composition
|
Ni |
C |
Si |
Mn |
S |
Cr |
Fe |
Cu |
|
|
Min |
58 |
- |
- |
- |
- |
27 |
7 |
- |
|
Max |
0.05 |
0.5 |
0.5 |
0.015 |
31 |
11 |
0.5 |
Material Properties
|
Density |
Melting Point |
Minimum Mechanical Properties of the Alloy at Room Temperature |
||
|
Tensile Strength |
Yield Strength |
Elongation |
||
|
g/cm3 |
℃ |
Rm N/mm2 |
Rp0.2 N/mm2 |
A5% |
|
8.19 |
1343-1377 |
700 |
350 |
45 |
Standards
ASTM B166, ASTM B168
Feature
Core properties: High-temperature and corrosion resistance
Applications
Sulfur-gas applications:
• Coal gasification units
• Radioactive waste vitrification
• Aqueous-phase corrosion resistance
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