Incoloy® Alloy Pipe (Incoloy 800, 825, 925, etc.)
✓ Acid & Chloride Dominance: Withstands 40% H₂SO₄ at 100°C (212°F) and seawater pitting with **<0.05mm/year corrosion rate**.
✓ Oxidation & Sulfidation Resistance: Forms a stable Cr₂O₃ oxide layer at 1,000°C (1,832°F), reducing scaling by 70% vs. 316L stainless steel.
✓ Thermal Stability: Operates from **-150°C (-238°F)** to 800°C (1,472°F) without embrittlement.
✓ Precision Manufacturing: Seamless pipes with **±0.1mm wall thickness tolerance** and Ra ≤0.8μm surface finish for leak-free systems.
Incoloy® Alloy Pipe (Incoloy 800, 825, 925, etc.)
Engineered for industries operating in highly corrosive, acidic, and high-temperature environments, Incoloy® alloy pipes are seamless or welded solutions designed for chemical processing, oil & gas, and marine applications. Utilizing nickel-iron-chromium superalloys like Incoloy 825 (Ni-42%, Fe-30%, Cr-21%, Mo-3%, Cu-2%), these pipes resist sulfuric acid (up to 40%), phosphoric acid, and chloride stress corrosion cracking (Cl-SCC) at 600°C (1,112°F) while maintaining structural integrity under 15,000 PSI pressure. Certified to ASTM B704, ASME SB704, and NACE MR0175, they outperform stainless steel with 5x lifespan in aggressive media.
- Sizes: 1/8″–24″ (DN6–DN600)
- Wall Thickness: 0.5mm–50mm (seamless/welded)
- Surface Finishes: Annealed, Pickled, Electropolished (Ra ≤0.4μm)
- Pressure Rating: PN160 (1,600 PSI) at 400°C (752°F) (Incoloy 825)
- Mechanical Properties (Incoloy 825): Yield Strength ≥240 MPa | Tensile Strength ≥586 MPa | Elongation ≥30% | Hardness ≤200 HBW
| Parameter Category | Incoloy 800H | Incoloy 825 | Incoloy 925 | Incoloy DS |
|---|---|---|---|---|
| Material Standard | ASTM B407, UNS N08810 | ASTM B423, UNS N08825 | ASTM B805, UNS N09925 | AMS 5581, UNS N06625 (modified) |
| Chemical Composition (%) | Ni: 30–35, Cr: 19–23, Fe: ≥39.5, C: 0.05–0.10, Al: 0.15–0.6, Ti: 0.15–0.6 | Ni: 38–46, Cr: 19.5–23.5, Fe: ≥22, Mo: 2.5–3.5, Cu: 1.5–3.0 | Ni: 42–46, Cr: 19–23, Fe: 22–27, Mo: 2.5–3.5, Ti: 1.9–2.4 | Ni: 58–63, Cr: 20–23, Fe: ≤5, Mo: 8–10, Nb: 3.15–4.15 |
| Tensile Strength (MPa) | 585–750 (Annealed) | 620–760 (Annealed) | 930–1070 (Aged) | 930–1030 (Annealed) |
| Yield Strength (MPa) | 240–415 (Annealed) | 240–410 (Annealed) | 760–965 (Aged) | 517–690 (Annealed) |
| Elongation (%) | ≥30 (in 50mm) | ≥30 (in 50mm) | ≥15 (in 50mm) | ≥35 (in 50mm) |
| Hardness | Rockwell B ≤85 | Brinell HBW ≤200 | Rockwell C 25–35 | Brinell HBW ≤220 |
| Density (g/cm³) | 8.00 | 8.14 | 8.08 | 8.44 |
| Melting Range (°C) | 1350–1400 | 1370–1425 | 1350–1400 | 1290–1350 |
| Thermal Conductivity (W/m·K) | 12.5 (20°C) | 11.1 (20°C) | 11.6 (20°C) | 12.0 (20°C) |
| Thermal Expansion (10⁻⁶/°C) | 14.4 (20–100°C) | 14.0 (20–100°C) | 13.2 (20–100°C) | 12.8 (20–100°C) |
| Max Service Temperature (°C) | 815 (Oxidizing) | 540 (Acid Service) | 425 (Sour Gas Service) | 980 (Oxidizing) |
| Corrosion Resistance | Resists oxidation, carburization, and nitric acid. | Excellent resistance to sulfuric/phosphoric acids and seawater. | Resists sulfide stress cracking (H₂S), chloride pitting. | Superior pitting, crevice, and chloride stress corrosion resistance. |
| Heat Treatment | Annealing: 980–1035°C (air cooling). | Annealing: 900–980°C (rapid cooling). | Aging: 620–760°C (16h, air cooling). | Solution Annealing: 1093–1177°C (rapid cooling). |
| Surface Finishes | Annealed & Pickled, Bright Annealed (BA). | Pickled & Passivated, Polished (Ra ≤0.8μm). | Ground, Polished (Ra ≤0.6μm). | Cold-Rolled Bright Annealed (BA), Pickled. |
| Pipe Dimensions | OD: 10.3–500mm Wall Thickness: 1.24–25mm Length: 3–12m. | OD: 10.3–600mm Wall Thickness: 1.24–30mm Length: 3–12m. | OD: 10.3–300mm Wall Thickness: 1.24–20mm Length: 3–12m. | OD: 10.3–600mm Wall Thickness: 1.24–30mm Length: 3–12m. |
| Key Applications | Petrochemical furnace tubes, steam generators. | Chemical processing pipes, seawater desalination systems. | Oil/gas downhole tubing, sour gas well equipment. | Aerospace exhaust systems, marine heat exchangers. |
Incoloy® Alloy Pipe (Incoloy 800, 825, 925, etc.) Applications
| Industry | Critical Use Cases | Incoloy® Pipe Advantage |
|---|---|---|
| Chemical Processing | Sulfuric acid reactors, pickling systems | Resists 40% H₂SO₄ at 100°C with zero intergranular attack. |
| Oil & Gas | Sour gas pipelines, offshore risers | Immune to H₂S >5,000 ppm at 150°C (302°F). |
| Marine Engineering | Seawater cooling systems, desalination pipes | Zero pitting in 3.5% NaCl seawater for 15+ years. |
| Power Generation | Flue gas desulfurization (FGD) ducting | Withstands HCl/SO₂ gas mixtures at 600°C (1,112°F). |
Incoloy® Alloy Pipe (Incoloy 800, 825, 925, etc.) Product Packaging
Incoloy® Alloy Pipe (Incoloy 800, 825, 925, etc.) (UNS N08810/N08825, ASTM B423/ASME SB-423 compliant) are engineered for extreme environments in chemical processing, oil & gas, and nuclear industries, offering exceptional resistance to sulfuric acid, chloride stress corrosion, and high-temperature oxidation (up to 1,100°C). To ensure dimensional precision and surface integrity during global transit, we deploy advanced packaging systems and logistics protocols compliant with NACE MR0175, ASME Section II, and ISO 9328-4 standards.
PE Shrink Wrapping
Each pipe is wrapped in 200μm polyethylene film to block moisture, dust, and UV exposure.
End Caps
Plastic/rubber caps on both ends to prevent dents, debris ingress, and thread damage.
Shock-Absorbing Bundling
Steel-Strapped Wooden Pallets: Heavy-duty pallets with non-slip rubber mats (Max load: 5 tons).
QR-coded tags
QR-coded tags linked to Mill Test Certificates (MTC), EN 10204 3.1 standards, and pipe batch history.
Incoloy® Alloy Pipe (Incoloy 800, 825, 925, etc.) Shipping
Sea transport
40HQ container (loading capacity 28 tons) / bulk carrier (LCL minimum 1 ton)
Air transport
reach major airports around the world within 7 days (DDP/DAP terms)
Land transport
door-to-door within China (qualification for dangerous goods transportation)
Our Services
We guarantee global door-to-door delivery within 7–15 business days via partnerships with DHL, Maersk, and UPS.
Why Choose Us?
Where Precision Meets Partnership，25 years of focus on metal material science，Not only a supplier, but also your engineering consultant，Fast and zero compromise，Sustainable trust cycle。
Full specifications and customization
Unlimited size, support non-standard cutting. Multiple surface treatments.
Professional capabilities
25 Years Of Focus On Metal Materials Science
Certification & Quality Assurance
Products comply with international standards such as ASTM, EN, JIS, etc., and are 100% tested from raw materials to finished products
Fast delivery & global supply
Global urgent orders are delivered within 15 days. One-stop service
FAQ
Q1: How does Incoloy 825 compare to Inconel 625 in sulfuric acid service?
A: Incoloy 825 offers 50% higher resistance to H₂SO₄ at elevated temperatures, while Inconel 625 excels in HCl and seawater environments.
Q2: What welding methods prevent sensitization in chloride environments?
A: Use TIG (GTAW) with ERNiCrMo-3 filler, limit heat input to **≤1.2 kJ/mm**, and post-weld anneal at 1,050°C (1,922°F).
Q3: Are pipes certified for offshore sour gas applications?
Full compliance includes:
- NACE MR0175/ISO 15156
- ASME SB704
- DNV-OS-F101 Subsea Standards
Q4: What’s the minimum order quantity (MOQ)?
Standard stock: 1 ton MOQ.
Custom sizes/tempers: 5 tons MOQ (lead time 35 days).
Q5: How to validate material authenticity?
Scan Blockchain NFC tags with AlloyGuard™ app to access:
- XRF validation against PMI certificates
- Third-party SGS/BV hydrotest data
- Blockchain-validated EN 10204 3.1 certifications
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