Inconel 625 Pipe Spool (UNS N06625 / W.Nr. 2.4856)
High-strength corrosion-resistant alloy Pipe Spool for marine and chemical processing
As a leading supplier of nickel-based superalloy custom pipe spools, SEATHER TECHNOLOGY specializes in the production of premium Inconel 625 pipe spool (UNS N06625) engineered for exceptional corrosion resistance, high strength, and long-term reliability.
Inconel 625 (UNS N06625 / W.Nr. 2.4856) is a nickel-chromium-molybdenum alloy renowned for its exceptional strength, excellent weldability, and outstanding corrosion resistance. With reliable performance from cryogenic temperatures up to 1800°F (982°C), it is widely used in aerospace components, petrochemical instrumentation, marine engineering, and high-purity fluid systems.
Custom pipe spool fabrication is one of SEATHER’s core manufacturing capabilities. We fabricate complete stainless steel and nickel alloy piping systems—ranging from large industrial projects consisting of thousands of spools to routine maintenance jobs and single-spool orders.
Our production facilities are staffed with highly skilled craftsmen, pipe fitters, welders, and fabricators. Backed by strict quality control, advanced welding processes, and a proven record of safety and precision, we ensure every alloy 625 pipe spool meets international standards and project-specific requirements. SEATHER is committed to exceeding customer expectations in design accuracy, fabrication quality, delivery schedule, logistics, and cost efficiency.
Inconel 625 Pipe Spool (UNS N06625) Specifications
| Product Name | Custom Inconel 625 N06625 Nickel Alloy Pipe Spools |
| Raw Materials | Alloy 625 (UNS N06625 / W.Nr. 2.4856) |
| Size | 114mm to 2500mm Diameter (Seamless & Welded, Fabricated), Wall Thickness: 10s/3 mm to XXS/70 mm; Customized or according to your drawing |
| Samples | Sample available |
| Tolerance | +/-5mm to +/-0.005mm |
| Testing Equipment | CMM; Tool microscope; multi-joint arm; Automatic height gauge; Manual height gauge; Dial gauge; Marble platform; Roughness measurement |
| Logo | Custom logo available |
| Surface Treatment | Anodizing, Passivation, Polishing, Plating, Painting, Black Oxide, Powder Coating, Brushing, Heat Treatment, Surface Phosphating, Hot Dip Galvanizing, More Surface Treatment, etc. |
| Color | Silver, black, gold, red, green, blue, purple, etc |
| File Formats | UG, SolidWorks, Pro/E, AutoCAD (DXF, DWG), PDF, TIF, JPG, etc |
| Services | OEM/ODM, Engineering&Design Consulting, Assembly, Finishing, Materials Sourcing, Custom Packaging Services, etc |
| Quality System | ISO9001, SGS, TUV |
Inconel 625 Pipe Spool (UNS N06625) Applications & Usages
- Aerospace
- Automotive
- Marine
- Chemical Processing
- Power Generation
- Nuclear
What is Inconel 625 (UNS N06625)
Nickel alloy 625 is widely used in marine applications due to its outstanding corrosion resistance. Its ability to withstand localized corrosion (pitting and crevice corrosion), chloride ion stress corrosion, and its excellent fatigue strength make it ideal for marine components such as propeller blades, exhaust systems, and fasteners.
Additionally, alloy 625 is extensively employed in the aerospace industry for its superior high-temperature tensile properties and creep strength. It is commonly used in aircraft piping systems, engine exhausts, fuel and hydraulic lines, and heat exchanger tubes. Its high-temperature resistance also makes it valuable in heat treatment equipment and the chemical industry.
Inconel 625 Pipe Spool (UNS N06625) Chemical Composition
| Grade | Standard | C | Si | Mn | P | S | Cr | Ni | Mo |
| 625 | ASTM | ≤0.1 | ≤0.50 | ≤0.50 | ≤0.015 | ≤0.015 | 20.00-23.00 | ≥58.0 | 8.0-10.0 |
Inconel 625 Pipe Spool (UNS N06625) Mechanical Properties
| Element | Yield Strength (0.2%Offset) | Melting Point | Density | Tensile Strength | Elongation |
| 625 | MPa – 276 | 1350 °C (2460 °F) | 8.44 g/cm3 | MPa – 690 | Min 30 % |
Inconel 625 Pipe Spool (UNS N06625) Physical Properties
| Melting Range | Specific Heat, 20°C (J/(g.K)) | Magnetic Permeability (20°C) | Thermal Conductivity, 20°C (W/(m.K)) | Curie Temperature (°C) |
| 1350 °C (2460 °F) | 410 | ＜1.001 | 9.9 | -196 |
Metal Cutting Service
Custom Metal Cutting Services For Diverse Industries
CNC Machining Services
Custom CNC machining parts in nickel alloy and stainless steel delivery in as fast as 3 days
Sheet Metal Fabrication
SEATHER’s custom sheet metal fabrication services offer a fast and cost-effective solution for your projects.
Metal Welding Service
Seather provides some of the best solutions ranging from custom metal welding and related services.
More Information About Inconel 625 Pipe Spool (UNS N06625)
When you choose to buy Inconel 625 Pipe Spool (UNS N06625), there have some important points we need to know before we get started.
Pitting resistance equivalency numbers (PREN) for Inconel 625 Pipe Spool (UNS N06625)
Inconel 625 PREN: 40.8
The pitting resistance equivalency number uses the alloy’s chemical makeup to guess its power against pitting corrosion. You check how much chromium, molybdenum, tungsten, and nitrogen are in the alloy. These elements help keep the steel safe. The most used formula is:
PREN = CR% + 3.3 x (MO% + 0.5 x W%) + 16 x N%Features of Inconel 625 Pipe Spool (UNS N06625)
The 625 alloy has excellent corrosion resistance due to its highly alloyed composition. It is almost not corroded in common mild environments, such as the atmosphere, fresh water, sea water, neutral salt solutions and alkaline media.
In more corrosive environments, the synergistic effect of nickel and chromium gives alloy 625 its resistance to oxidizing chemicals.
High levels of nickel and molybdenum increase resistance to non-oxidizing environments. The high molybdenum content also gives the alloy excellent resistance to pitting and crevice corrosion. The presence of niobium can stabilize the alloy to a certain extent and avoid intergranular cracks.
How to Purchase Inconel 625 Pipe Spool (UNS N06625)
When purchasing alloy pipe spools, it’s essential to have the right materials and information to ensure a smooth procurement process and to get the products that meet your needs.
Here’s what you need to provide:
1. Material: Specify the grade material, Alloy 625
2. Size: Specify the pipe’s Outer Diameter, Inner Diameter, Wall thickness, Length, Delivery State, finish, flanges types, etc.
3. Quantity: Provide the exact number of products required for an accurate quotation.
4. Technical specifications: Include technical specifications and drawings. If there are unique design requirements, detailed drawings can be attached.
5. Quality standards: Specify quality standards and inspection requirements, such as the need for third-party inspection, material certification, and inspection reports.
6. Special requirements: Specify any special surface treatment, polishing, corrosion resistance requirements, etc.
7. Packaging requirements: If there are specific packaging needs, such as protective or anti-corrosion packaging, please specify.
8. Delivery time: Specify the expected delivery time and location.
By preparing the above information, you can streamline the process of purchasing alloys and ensure that you receive high-quality products that meet your requirements.
Conclusion
We have introduced our products briefly. If you want to know more about it, you can check the article here Inconel Alloy 625: Composition, Properties and Applications.
If you need to purchase alloy pipe spool, please get in touch with us immediately.
Trademark Notices:
Inconel®, Incoloy®, and Monel® are registered trademarks of Special Metals Corporation.
Hastelloy® is a registered trademark name of Haynes International, Inc.
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