Incoloy 825 (UNS N08825) Seamless Acid Process Pipes
42% Nickel, 21.5% Chromium, 3% Molybdenum, and 2% Copper alloy engineered for extreme sulfuric acid and sour hydrocarbon service.
ASTM B423 / ASME SB423 UNS N08825 (Alloy 825) Pipe
Starlight Tubes produces ASTM B423 UNS N08825 (Incoloy 825) seamless and welded pipes for aggressive chemical processing and sour oil & gas environments. Titanium stabilization combined with high nickel and molybdenum gives 825 complete resistance to chloride stress corrosion cracking, pitting, and intergranular attack.
Our Incoloy 825 pipes are supplied in annealed condition with full NDT inspection, hydrostatic pressure testing up to 600 bar, and PMI verification. Widely deployed in sulfuric acid piping, nuclear fuel reprocessing, oilfield downhole tubing, and acid pickling tank heaters.
Technical Specifications
ASTM / ASME CompliantTechnical Specifications — Incoloy 825 (UNS N08825)
Certified chemical limits and mechanical tensile properties for ASTM B423 Incoloy 825
| Grade | Ni | Cr | Mo | Cu | Ti | C (max) | Fe |
|---|---|---|---|---|---|---|---|
| Incoloy 825 | 38.0-46.0 | 19.5-23.5 | 2.5-3.5 | 1.5-3.0 | 0.6-1.2 | 0.05 | Balance (22% min) |
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Direct Mill Supply for Incoloy 825 Pipes
Starlight Tubes provides top-grade Incoloy 825 pipes with certified NACE MR0175 compliance, 100% hydro testing, and global export packaging.
Frequently Asked Questions on Incoloy 825 (UNS N08825) Pipes
Key engineering, tolerance, and international compliance answers from our metallurgical quality desk.
Incoloy 825 offers exceptional resistance to sulfuric acid (up to 40% concentration at boiling temperature), phosphoric acid, nitric acid, and organic acids.
Request Project Quotation for Incoloy 825 (UNS N08825) Pipes
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