How In690 Alloy Powder Ensures Corrosion Resistance in Nuclear and Chemical Applications

Published by HUAXIAO TECH manufacturer

When reliability under high-temperature and corrosive environments is critical, In690 alloy powder stands out. With its superior resistance to steam, acids, and oxidizing environments, it is widely used in nuclear reactors, heat exchangers, and chemical processing components.

Outstanding Corrosion Resistance

In690 is a nickel-based alloy containing chromium and iron. This combination provides:

• Excellent resistance to high-temperature steam and oxidizing media

• Superior stress corrosion cracking resistance, especially in chloride-rich environments

• Long-term performance in high-pressure, high-humidity conditions

It is especially valued in nuclear steam generator tubing and chemical reactors.

Stable Mechanical Properties at Elevated Temperatures

Thanks to its balanced metallurgical structure, In690 alloy offers:

• High strength and stability above 700°C

• Good creep and rupture resistance

• Minimal thermal deformation under prolonged use

These properties make it a reliable material for structural applications in aggressive thermal conditions.

Suitable for Additive Manufacturing and MIM

HUAXIAO TECH supplies In690 powder with:

• High sphericity and narrow particle size distribution

• Low oxygen and impurity levels

• Excellent flowability for powder bed fusion and metal injection molding (MIM)

The powder supports laser powder bed fusion (LPBF), electron beam melting (EBM), and binder jetting processes.

Application Fields

• Nuclear steam generator tubes

• Heat exchanger components

• High-temperature chemical reactors

• Seawater desalination and filtration systems

Key Benefits

• Excellent corrosion resistance in oxidizing and chloride environments

• Good weldability and post-processing stability

• Compatible with multiple additive manufacturing techniques

• Proven long-term reliability in nuclear-grade conditions

Frequently Asked Questions (FAQ)

Q1: What makes In690 superior to Inconel 600?
A1: In690 contains more chromium, offering improved oxidation and corrosion resistance at higher temperatures.

Q2: Can this powder be used in LPBF 3D printing?
A2: Yes, HUAXIAO TECH provides AM-grade In690 powder optimized for laser-based systems.

Q3: What particle sizes are available?
A3: Standard ranges are 15–53 μm for AM and 5–25 μm for MIM. Custom grades are available on request.

Conclusion

In690 alloy powder combines corrosion resistance, high-temperature strength, and AM compatibility, making it the ideal choice for critical systems in nuclear, chemical, and marine environments.

For technical consultation or bulk powder inquiries, contact HUAXIAO TECH today.