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N06690 (commercially known as Inconel 690 or NS310) is a nickel-chromium-iron solid solution strengthening alloy with a high chromium content (28-31%), specifically designed for extremely high-temperature water medium environments, with its core advantage being its outstanding resistance to stress corrosion cracking (SCC).
It is mainly applied in nuclear power and high-purity water environments. Key areas include: heat transfer tubes of steam generators in nuclear power plants (core anti-corrosion components of PWR pressurized water reactors), nuclear waste treatment containers, high-temperature and high-pressure water system pipelines and valves. Chemical industry (caustic alkali evaporator, acid regeneration equipment); Environmental protection (hot section of flue gas desulfurization system) And heat exchangers, pressure vessels, etc. that require extremely strong resistance to chloride ion stress corrosion. Its comprehensive performance makes it an irreplaceable strategic material for nuclear power safety-grade equipment and in harsh water chemical environments.
The chemical composition:
C | Si | Mn | S | Ni | Cr | Fe | Cu |
≤0.05 | ≤0.5 | ≤0.5 | ≤0.015 | ≥58.0 | 27.0-31.0 | 7.0-11.0 | ≤0.5 |
Mechanical properties
tensile strength( Mpa) | 0.2% yield strength ( Mpa) | Elongation A5(%) | |
≥586 | ≥241 | 30 |
Density: 8.19g/cm3
N06690 (commercially known as Inconel 690 or NS310) is a nickel-chromium-iron solid solution strengthening alloy with a high chromium content (28-31%), specifically designed for extremely high-temperature water medium environments, with its core advantage being its outstanding resistance to stress corrosion cracking (SCC).
It is mainly applied in nuclear power and high-purity water environments. Key areas include: heat transfer tubes of steam generators in nuclear power plants (core anti-corrosion components of PWR pressurized water reactors), nuclear waste treatment containers, high-temperature and high-pressure water system pipelines and valves. Chemical industry (caustic alkali evaporator, acid regeneration equipment); Environmental protection (hot section of flue gas desulfurization system) And heat exchangers, pressure vessels, etc. that require extremely strong resistance to chloride ion stress corrosion. Its comprehensive performance makes it an irreplaceable strategic material for nuclear power safety-grade equipment and in harsh water chemical environments.
The chemical composition:
C | Si | Mn | S | Ni | Cr | Fe | Cu |
≤0.05 | ≤0.5 | ≤0.5 | ≤0.015 | ≥58.0 | 27.0-31.0 | 7.0-11.0 | ≤0.5 |
Mechanical properties
tensile strength( Mpa) | 0.2% yield strength ( Mpa) | Elongation A5(%) | |
≥586 | ≥241 | 30 |
Density: 8.19g/cm3
