Premium Incoloy 825 Alloy Bar for Chemical Processing and Corrosion Resistant Applications

Product Information:

Incoloy 825 Bar is a highly corrosion-resistant nickel-iron-chromium-molybdenum superalloy, designed for use in aggressive environments where high temperature and corrosion resistance are critical. This alloy, with an austenitic structure, is commonly used in industries such as oil and gas, chemical processing, marine engineering, and pollution control. Available in hot-rolled bars, cold-drawn precision bars, and forged bars, Incoloy 825 bars come in a diameter range from 10 mm to 300 mm, with custom sizes available up to 500 mm.

The surface finish options include pickled, ground (Ra ≤ 0.8 μm), or electropolished, providing versatility depending on the application requirements. Incoloy 825 can be used in continuous service at temperatures up to 540°C (1000°F), and short-term exposure can withstand temperatures up to 815°C (1500°F). The material meets certifications such as NACE MR-0175/ISO 15156, ASME BPV Code Section VIII, and PED 2014/68/EU, ensuring its compliance with global standards.

Characteristics:

Incoloy 825 bars are known for their excellent corrosion resistance in aggressive environments, particularly in acidic and chloride-rich conditions.

• Pitting/Stress Corrosion Resistance: Critical pitting temperature (CPT) >85°C in 6% FeCl₃ per ASTM G48.

• Sulfuric Acid Resistance: Corrosion rate <0.1 mm/year in 50% H₂SO₄ at 65°C (per ASTM G31).

• Chloride Ion Tolerance: Withstands >10,000 ppm Cl⁻ in seawater without crevice corrosion.

• Hydrogen Embrittlement Immunity: No cracking after 200-hour testing in H₂S-saturated brine (NACE TM0177).

• Phase Stability: No sigma phase formation after 10,000 hours at 550°C.

• Weldability: Compatible with TIG and MIG welding (ERNiCrMo-3 filler recommended).

Technology:

• Manufacturing Process:

• Triple Melt Process (VIM + ESR + VAR) to achieve superior material purity (S < 0.005%, O₂ < 20 ppm).

• Controlled Rolling at 950–1100°C to achieve ASTM grain size 5-7.

• Heat Treatment:

• Solution annealing at 980–1030°C (1800–1900°F) with water quenching.

• Stabilization at 720°C (1330°F) for 4 hours to precipitate TiC carbides.

• Quality Control:

• Intergranular corrosion testing per ASTM G28 Method A.

• Eddy current testing for surface defects (sensitivity ≤0.1 mm).

• Hydrogen charging tests for oil/gas compliance.

Theory:

Incoloy 825’s corrosion resistance is derived from its unique metallurgical composition:

• Molybdenum-Copper Synergy: Mo provides pitting resistance in chloride environments, while Cu enhances resistance to reducing acids like H₂SO₄ and HCl.

• Titanium Stabilization: Ti combines with residual C to form TiC, preventing Cr-depletion at grain boundaries.

• Nickel Matrix Dominance: High Ni content (>40%) ensures stability in both oxidizing and reducing environments.

• Passive Layer Formation: Cr₂O₃-MoO₃ oxide film with self-healing capability in pH 2–12 environments.

Applications:

Incoloy 825 bars are widely used in industries that require excellent resistance to corrosion and high-temperature performance:

Oil & Gas:

Downhole tubing hangers, subsea Christmas tree components, and sour gas scrubbers.

Chemical Processing:

Reactor agitators for sulfuric acid alkylation, phosphoric acid evaporators, and HCl storage systems.

Marine Engineering:

Seawater-cooled heat exchangers, desalination plant brine heaters, and offshore platform risers.

Pollution Control:

Flue gas desulfurization (FGD) system dampers and scrubber internals.

Chemical Composition:

Our Advantages:

1. Market Leader: One of the top 5 companies in China’s nonferrous metal industry.

2. Flexible Products: Thousands of specifications to meet various customer needs.

3. Low MOQ: Custom samples available to cater to specific requirements.

4. Fast Production Lead Time: Quick delivery for entire orders.

5. Professional Inspection: Rigorous inspection using spectrometers, tensile testers, and other advanced equipment.

6. Professional Business Team: Fast responses to inquiries and 24-hour online quotations. Our sales team recommends the best products for your performance and price needs.

7. Secure Packaging: Custom packaging options (including wooden boxes) to ensure safe delivery.

8. Various Payment Methods: Multiple payment options to ease transactions.

9. Long-term Customer Relationships: Clients trust us for long-term cooperation (up to 7 years).

10. Award Recognition: Received yearly awards from Google for outstanding service.

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:

Q: How can I contact your company?
A: You can reach us via email at sales8@dlx-alloy.com or use our contact form on the website.

Q: What industries do you serve?
A: We supply materials for oil & gas, chemical processing, marine, and pollution control industries.

Q: Do you offer product customization?
A: Yes, we offer custom sizes, finishes, and packaging based on your requirements.

Q: What is your lead time for delivery?
A: Our lead time is typically 7–15 days, with express shipping available for urgent orders.

Q: How can I get a quote?
A: Send your specifications to +86 199 0611 9641 or use our online quote form.