What is Incoloy 925 high Performance Alloy Strip？

Incoloy 925, also known by its UNS N09925 or W.Nr. 2.4852 designation, is an advanced high-performance alloy designed for high-temperature and corrosion-resistant applications. With an outstanding balance of mechanical strength, corrosion resistance, and thermal stability, Incoloy 925 is highly sought after for use in harsh environments, particularly in industries like oil and gas extraction, chemical processing, and marine engineering.

Parameters

Key Features

• Extreme Corrosion Resistance

Incoloy 925 exhibits exceptional resistance to hydrogen sulfide stress corrosion cracking (SSC) and is capable of withstanding challenging conditions, such as high-temperature environments with chloride exposure. Its Pitting Resistance Equivalent Number (PREN) of 38.5 (calculated with Cr, Mo, and N) showcases its superior protection against corrosion. This makes it an ideal material for oil and gas extraction in sour wells and subsea applications.

• Mechanical Strength & Fatigue Performance

Incoloy 925 maintains high mechanical strength, with tensile strength reaching up to 1,000 MPa, yield strength of 750 MPa, and elongation above 15%. These properties make it suitable for demanding applications where durability and fatigue resistance are crucial. The fatigue strength at 450 MPa over 1 million cycles ensures long-term performance in cyclic loading environments.

• Thermal Stability

The alloy’s excellent thermal stability allows it to maintain 85% of its yield strength after exposure to 400°C sour gas environments for 1,000 hours, ensuring reliable performance in high-temperature conditions.

Applications

Oil and Gas Extraction

Incoloy 925 is highly suitable for downhole tools, particularly in sour wells where H₂S concentrations exceed 5% and CO₂ partial pressure surpasses 10 MPa. Additionally, it is used in subsea Christmas tree valves, which are designed for a service life of over 30 years in seawater and hydrogen sulfide environments.

Chemical Processing

Incoloy 925 excels in chemical processing applications, including reactor internals for HCl acid regeneration at high temperatures (up to 180°C) and flue gas desulfurization (FGD) systems where the alloy must endure corrosive environments with low pH and wet-dry cycling.

Marine Engineering

The alloy’s resistance to cavitation erosion makes it perfect for seawater pump shafts and other marine engineering applications. Its superior fatigue resistance ensures the longevity of offshore platform tensioner systems, which experience extreme cyclic loads.

Nuclear Waste Management

Incoloy 925 is utilized in spent fuel reprocessing vessels exposed to highly corrosive HNO₃ + HF mixtures at temperatures of 90°C, offering vital durability for nuclear waste management systems.

Specialty Manufacturing

With its ability to withstand multi-threat corrosion, Incoloy 925 is ideal for use in geothermal wellhead connectors, hydrogen compressor valve plates, and other specialty manufacturing applications where resistance to hydrogen permeation and extreme pressure is critical.

Advanced Manufacturing Techniques

Triple Melt Process

Incoloy 925 undergoes an advanced Triple Melt Process, combining VIM, ESR, and VAR refining techniques to achieve ultra-low impurity levels. This ensures high purity, reducing non-metallic inclusions to a minimum (≤0.5% area fraction) and improving overall material performance.

Precision Rolling & Surface Treatment

The material is cryogenically rolled at -50°C, which increases dislocation density and results in nano-twinned structures for enhanced strength. Surface treatments include electropolishing (Ra ≤0.1 μm) and HVOF-sprayed WC-10Co-4Cr coatings for additional protection in aggressive environments.

Heat Treatment

Incoloy 925’s heat treatment process includes two-stage aging (720°C/8h and 620°C/8h), optimizing the formation of γ' (Ni₃(Ti,Al)) precipitates for better strength and durability under high-temperature conditions.

Key Advantages:

1. Corrosion Resistance: Superior performance in harsh environments, including sour gas and chloride-containing systems.

2. High Strength: Excellent mechanical properties, ideal for fatigue resistance and high-pressure applications.

3. Long-term Durability: High resistance to high-temperature oxidation and thermal cycling, ensuring reliable service life.

4. Versatility: Widely used in industries ranging from oil and gas to marine engineering and nuclear waste management.

CHANGZHOU DLX ALLOY CO, LTD was established in 2002 and has got ISO9001 International Quality Management System Certificate and SGS Certificate. Our factory is professional in researching and producing special alloy material. From melting, drawing, heat treatment, finishing and testing .We offer nickel based, copper-based, and iron-based alloys, including super alloy, welding materials, anti-corrosion alloy, Precision Alloy , FeCrAl alloy, NiCr alloy, CuNi alloy, thermocouple and etc, in the form of wire, strip, ribbon, bar, tube, plate.

Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications. We also provide chemical analysis reports for every FeCrAl alloy, NiCr alloy, and other products purchased.

For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.

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FAQ

Q1: What industries benefit from Incoloy 925?

Incoloy 925 is highly valued in industries such as oil and gas extraction, chemical processing, marine engineering, nuclear waste management, and specialty manufacturing due to its unique combination of corrosion resistance, mechanical strength, and thermal stability.

Q2: How can I contact your company for more information?

Our team is ready to assist you with any questions or inquiries regarding Incoloy 925 or our other products. You can contact us via:

• Email: sales8@dlx-alloy.com

• Phone:+86 199 0611 9641

• Website: https://www.dlx-alloys.com/

Feel free to reach out, and our professional team will provide fast responses and expert guidance.

Q3: Do you offer customization options for Incoloy 925?

Yes, we offer a range of customization options, including different dimensions, surface treatments, and heat treatments tailored to your specific application needs. Contact our team to discuss your requirements.

Q4: What certifications do your products have?

Our Incoloy 925 alloy products meet rigorous industry standards, including NACE MR0175/ISO 15156-3 for sulfide stress corrosion cracking and API 6ACRA for oil and gas applications.