Plate, Pipe & Bar | ASTM B424 / B423 / B564
Nickel-iron-chromium alloy with titanium and copper – built to resist sulfuric and phosphoric acid. Ideal for marine and chemical processing.
Updated: July 2025
Product Form Minimum Order
** Trial orders available for project approvals and lab test lots.
Includes Free Pre-Shipment Third-Party Inspection (PMI, Dimensional, Visual, Photos) by SGS / TÜV
We don’t just sell certified material. We re-certify it ourselves and then have an independent expert verify it. This is our definition of uncompromising integrity.
Forms: Plate / Sheet / Seamless Pipe / Welded Tube / Round Bar / Flanges
Standards: ASTM B424, B423, B564
UNS: N08825
W.Nr.: 2.4858
Primarily in chemical plants (sulfuric, phosphoric, nitric acid units), offshore platforms, marine exhausts, pickling equipment, and waste treatment. It’s chosen when both acid and chloride resistance are required.
Yes. Incoloy 825 has higher nickel and includes molybdenum and copper for better stability in highly reducing and oxidizing environments. It offers more comprehensive resistance compared to 904L in mixed acid systems.
Absolutely. It performs well in both stagnant and flowing seawater and is resistant to localized attack such as pitting and crevice corrosion.
Yes. Use standard GTAW or SMAW processes with ERNiCrMo-3 or similar fillers. Preheating is not necessary. Post-weld heat treatment is typically not required unless specified.
Incoloy 825 is generally used up to ~540°C. It’s not designed for high-stress high-temperature service like Incoloy 800H, but it resists scaling and remains stable in moderately high-temperature acidic media.
Yes, when ordered and tested accordingly. It is commonly specified for sour service in oil & gas applications.
Plates and pipes are typically supplied in annealed and pickled (descaled) condition. Custom surface finishes (e.g. 2B, BA, polished) are available on request.
From Dubai stock: 5–7 working days
From China: 3–5 weeks
Custom OD pipes or thick-wall items: 6–8 weeks
• EN 10204 3.1 (3.2 with TPI)
• Third-party inspection by SGS, BV, TUV, Lloyd’s
• Material traceability to melt, heat, and batch
Engineered for Acids & Chlorides
With 42% nickel, 3% molybdenum, and added copper and titanium, Incoloy 825 is your go-to alloy for sulfuric acid, phosphoric acid, and seawater exposure.
Incoloy 825 offers superior corrosion resistance in a wide range of aggressive media:
For linings, tanks, acid storage, heat exchangers
For chemical pipelines, marine systems, process tubing
For fasteners, valve bodies, and pressure parts
