Incoloy 825 Pipe & Tube Supplier in India — N08825

Incoloy 825 (N08825) and Inconel 625 (N06625) are both nickel alloys but serve different cost-performance niches. Incoloy 825 contains 42% nickel, 21% chromium, 3% molybdenum, and 2% copper, while Inconel 625 has 58% nickel, 22% chromium, and 9% molybdenum. The key difference is that 825 costs approximately 40-50% less than 625 due to lower nickel and molybdenum content. Incoloy 825 is excellent for moderate corrosion environments — sulphuric acid, phosphoric acid, and sour gas — where 316L is insufficient but full Inconel 625 is overkill. Choose 625 for extreme environments: marine, hot concentrated acids, and severe pitting/crevice conditions.

Yes, Incoloy 825 provides excellent resistance to sulphuric acid across a wide range of concentrations and temperatures. The copper content (approximately 2%) specifically enhances resistance to reducing acids like H2SO4. At room temperature, 825 resists all concentrations from dilute to 90%. At elevated temperatures (up to 80°C), it handles concentrations up to approximately 60-70% effectively. The corrosion rate in 20% H2SO4 at boiling temperature is less than 0.5 mm/year. This makes it a cost-effective choice for sulphuric acid plants, pickling equipment, and acid coolers where SS 316L corrodes but the full expense of Hastelloy C-276 is not justified.

Yes, Incoloy 825 is listed in NACE MR0175/ISO 15156 (the standard governing materials for H2S-containing oil and gas environments) as an acceptable material for sour service applications. The alloy's high nickel content (42%) provides inherent resistance to sulphide stress cracking (SSC) and stress corrosion cracking in H2S environments. It is approved for use in all sour service zones including the most severe conditions. This makes Incoloy 825 widely used in oil & gas production tubing, downhole equipment, flow lines, and process piping where hydrogen sulphide is present. Creative Metal Industries supplies NACE-compliant 825 pipe with supporting documentation.

Both Incoloy 825 and SS 904L are designed for acid service but differ in composition and performance. Incoloy 825 has 42% nickel versus 904L's 25% nickel — this higher nickel content gives 825 significantly better resistance to chloride stress corrosion cracking and sour service (H2S) environments. SS 904L has higher molybdenum (4.5% vs 3%) giving slightly better pitting resistance in certain chloride media. In terms of cost, 904L is approximately 20-30% cheaper than 825. Choose 825 for sour service (NACE MR0175), chloride SCC concerns, and mixed acid environments. Choose 904L for concentrated sulphuric acid and seawater applications where SCC is not the primary concern.

Creative Metal Industries stocks Incoloy 825 seamless pipes per ASTM B423 from 1/2 inch to 10 inches NB in schedules SCH 10S, 20S, 40S, and 80S. Welded pipes are available from 2 inches to 10 inches NB. Tubes per ASTM B163 are stocked in OD 6.35mm to 114.3mm for heat exchanger and condenser applications. Standard lengths are 5-7 metres random. All material is solution annealed at 940°C, water quenched, pickled, and supplied with full MTC per EN 10204 3.1, intergranular corrosion test report, and PMI verification. Custom cut lengths and project quantities available on request.

Incoloy 825 pipe pricing in India typically ranges from Rs 2,000 to Rs 6,000 per kg depending on size, schedule, quantity, and current nickel market conditions. It is positioned as a mid-range nickel alloy — more expensive than SS 316L or 904L, but significantly cheaper than Inconel 625 or Hastelloy C-276. Seamless pipes in smaller sizes command higher per-kg pricing due to manufacturing complexity. The cost-performance ratio makes 825 particularly attractive for oil & gas sour service applications where NACE compliance is required but the extreme corrosion resistance of Inconel 625 is not necessary. Contact CMI at +91 99982 80619 for current competitive pricing.