Incoloy 825 Spool is a high-performance nickel–iron–chromium alloy spool assembly designed to withstand highly corrosive environments, including sulfuric acid, phosphoric acid, seawater, alkalis, and aggressive chemical media. With excellent resistance to stress-corrosion cracking, pitting, and crevice corrosion, Incoloy 825 is widely preferred for chemical processing systems, pollution control equipment, nuclear fuel reprocessing systems, and oil & gas operations. Its balanced composition of nickel, chromium, and molybdenum enhances its stability in both oxidizing and reducing conditions, making Incoloy 825 Spools highly reliable in extreme service environments..
Riddhi Siddhi Impex, a reputable manufacturer in India, specializes in producing premium-grade Incoloy 825 Spools that meet stringent international standards. Each spool is fabricated using advanced machinery and precise welding techniques to ensure uniformity, dimensional accuracy, and long-term performance. Whether it's for high-temperature processing, corrosive fluid transfer, or offshore applications, the company ensures that every product undergoes rigorous quality checks before dispatch.p>
As a leading supplier of Incoloy 825 Spools, Riddhi Siddhi Impex maintains a robust inventory to meet urgent project needs. Their spools are used in a variety of industries, including oil & gas, marine engineering, chemical plants, desalination units, pharmaceutical processing, and geothermal piping systems. The combination of high corrosion resistance and mechanical strength makes their Incoloy 825 Spools suitable for long-term industrial operation.
Riddhi Siddhi Impex supplies Incoloy 825 Spools across major industrial cities in India such as Mumbai, Delhi, Bengaluru (Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, and Chandigarh. Industries in these regions rely on corrosion-resistant materials for chemical transport, process piping, and seawater applications, making Incoloy 825 Spool an essential product...
Additionally, the company extends its domestic supply reach to rapidly developing manufacturing hubs including Mysuru (Mysore), Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Madurai, Kochi, Thiruvananthapuram, Mangalore, Nashik, Kolhapur, Chandrapur, and Akola. These cities have a strong industrial base in sectors like petroleum refining, chemical production, textile dyeing, metallurgy, and marine engineering—applications where Incoloy 825 Spools perform exceptionally well.
| Product Name | Incoloy 825 Spool |
|---|---|
| Manufacturer / Supplier | Riddhi Siddhi Impex (Domestic supplier across India) |
| Alloy / Grade | Incoloy 825 (UNS N08825 / W.Nr. 2.4858) |
| Typical Standards | ASTM B163 / ASTM B424 / ASTM B423 / ASTM B425 / ASME SB163 / ASME SB424 (pipe, tube, fittings per application) |
| Forms | Fabricated spools, welded spools, long/short spool assemblies, flanged and beveled ends |
| Size Range | 1/2" NB to 24" NB (custom sizes available) |
| Length | Up to 12 m or as per drawing / project requirement |
| Typical Applications | Chemical processing, acid handling, oil & gas, seawater systems, desalination, pollution-control equipment, nuclear fuel processing |
| Element | Typical Content (wt %) |
|---|---|
| Nickel (Ni) | 38.0 – 46.0 |
| Chromium (Cr) | 19.5 – 23.5 |
| Molybdenum (Mo) | 2.5 – 3.5 |
| Copper (Cu) | 1.5 – 3.0 |
| Titanium (Ti) | 0.6 – 1.2 |
| Aluminium (Al) | ≤ 0.2 |
| Carbon (C) | ≤ 0.05 |
| Manganese (Mn) | ≤ 1.0 |
| Silicon (Si) | ≤ 0.5 |
| Iron (Fe) | Balance (≈ 20–35) |
| Sulfur (S) | ≤ 0.03 |
| Property | Typical Value |
|---|---|
| Ultimate Tensile Strength (Rm) | ~ 620 – 772 MPa (typical ≈ 690 MPa) |
| Yield Strength (0.2% offset) | ~ 310 – 441 MPa (typical ≈ 320–340 MPa) |
| Elongation (A) | ~ 30% – 45% (depending on product form) |
| Hardness | ~ 85 – 100 HRB (typical) |
| Density | ~ 8.14 g/cm³ |
| Operating Temperature | Good performance from cryogenic up to ≈ 800–900°C (application dependent) |
| Nominal Pipe Size (NB) | Outside Diameter (mm) | Common Wall Thickness (mm) | Typical Spool Length |
|---|---|---|---|
| 1/2" | 21.3 | 2.77 / 3.40 | Up to 6 m |
| 1" | 33.4 | 3.38 / 4.55 | Up to 6 m |
| 2" | 60.3 | 3.91 / 6.02 | Up to 6–8 m |
| 4" | 114.3 | 6.02 / 8.56 | Up to 8–10 m |
| 6" | 168.3 | 7.11 / 9.27 | Up to 10–12 m |
| 8" | 219.1 | 9.27 / 11.13 | Up to 12 m |
| 12" | 323.9 | 9.53 / 12.70 | Up to 12 m |
| Designation System | Equivalent |
|---|---|
| UNS | N08825 |
| Werkstoff (W.Nr.) / DIN | 2.4858 |
| EN / BS (approx.) | Alloy 825 / NA 21 (common trade equivalents) |
| JIS / GOST | Common equivalents available — check specific standard for product form |
| Standard | Typical Use / Description |
|---|---|
| ASTM B163 | Seamless nickel and nickel alloy condenser & heat-exchanger tubes (includes Alloy 825 variants) |
| ASTM B423 / B424 / B425 | Pipe, tube and fittings specifications for various nickel alloys (check specific spec for Alloy 825) |
| ASME SB163 / SB424 | Boiler & pressure vessel / tube & pipe code applicability |
| ASTM B564 | Fittings / forged components in alloy 825 |
| Type | Primary Use / Advantage |
|---|---|
| Inconel 625 Spool (UNS N06625) | Excellent corrosion resistance & high strength in chloride environments and seawater |
| Inconel 600 Spool (UNS N06600) | Good oxidation resistance and high-temperature strength |
| Incoloy 800 / 800H / 800HT Spools | High-temperature structural stability for furnaces and heat exchangers |
| Hastelloy C276 Spool (UNS N10276) | Superior resistance to highly corrosive chemical environments |
| Monel 400 Spool (UNS N04400) | Excellent seawater and alkali resistance |
Each Incoloy 825 Spool manufactured by Riddhi Siddhi Impex undergoes strict quality assurance including NDT (Non-Destructive Testing), hydro testing, PMI (Positive Material Identification), mechanical testing, and dimensional accuracy checks. This commitment to quality ensures that every spool offers excellent durability, reliability, and structural integrity in high-pressure operations.
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