Gnee is a professional Inconel 625 tube manufacturer, provide ASTM B444 Inconel 625 tubes, such as inconel 625 seamless pipes, Inconel 625 welded pipes, etc. with precision processing, global shipping, and customized solutions for various industrial applications. Factory direct sale.
Inconel 625 Pipe Suppliers
Gnee supplies premium Inconel 625 tube, an alloy ideal for chemical processing and marine applications, ensuring reliable performance even in extreme conditions such as heat exchangers, turbines, and exhaust systems. We offer Inconel 625 pipe and fittings to standards such as ASTM B444 and ASTM B705.
In addition to supplying high-quality pipe, Gnee also provides customization, cutting, welding, and technical consulting services to ensure you get the exact solution you need. With fast delivery and expert support, Gnee is your trusted partner for all your Inconel 625 needs. Contact us today to learn more!

| About Gnee Alloy | Founded in 2008, Factory Area 35,000m², expert nickel alloy manufacturer & supplier & exporter with rich experience. |
|---|---|
| Rich Grades & Shapes | Inconel Plate & Pipe & Tube & Sheet & Bar & Coil & Fitting In Stock |
What Forms of Inconel 625 Pipe Can Gnee supply?
Gnee provide Inconel 625 seamless pipes, welded pipes, fittings and custom tube blanks, ensuring end-to-end solutions from prototyping to mass production. We support third-party inspection: optional NDE (non-destructive testing), including hydrostatic, ultrasonic and eddy current testing






Basic Information Of Inconel 625 Pipe Product
The following is the product specifications of Alloy 625 that Gnee can provide. If you need other information, please contact us for more information.
Description
Inconel 625 tube is a high-performance nickel-chromium alloy composed primarily of 58% nickel, 20-23% chromium, and 8-10% molybdenum that maintains its mechanical properties over a wide temperature range from cryogenic to 980°C (1800°F). The alloy has excellent resistance to pitting and crevice corrosion, making it suitable for use in industries such as aerospace, chemical processing, and offshore engineering. The alloy is commonly used in applications such as gas turbines, heat exchangers, and nuclear reactors.
Inconel 625 is known for its excellent resistance to high-temperature oxidation, corrosion, and fatigue in extreme environments. Compared to other nickel alloys such as Inconel 718, Inconel 625 has superior weldability and resistance to stress corrosion cracking, making it the material of choice for demanding applications.
Inconel 625 Tube Product Parameters
| Property | Specification |
| Material | Inconel 625 |
| UNS | N06625 |
| Manufacturing Process | Seamless, Welded, Cold Drawn, Hot Finished |
| Chemical Composition | Ni: 58-67%, Cr: 20-23%, Mo: 8-10%, Fe: 5% Max |
| Outer Diameter | 6 mm to 600 mm |
| Wall Thickness | 1 mm to 50 mm |
| Length | Customized, up to 12 meters |
| Temper | Annealed, Solution Heat Treated |
| Finish | Bright, Polished, or Mill Finish |
| Tensile Strength | 105,000 psi (725 MPa) |
| Yield Strength | 45,000 psi (310 MPa) |
| Elongation | 30% min |
| Density | 8.44 g/cm³ |
| Melting Point | 1350-1400°C |
| Application | Aerospace, Chemical Processing, Marine, High-Temperature Environments |
What ASTM standards of Inconel 625 Pipe can Gnee produce?
| ASTM Standard | Description |
| ASTM B444 | Seamless Pipe & Tube, Nickel-Chromium-Molybdenum |
| ASTM B705 | Welded Pipe, Nickel-Chromium-Molybdenum |
| ASTM B366 | Nickel-Chromium Alloy Fittings |
| ASTM B517 | High-Temperature Service Alloys |
Inconel 625 Tube material Equivalent grades
| Standard | UNS | EN |
| Alloy 625 | N06625 | 2.4856 |
Parameter Information
Chemical Parameters
| Element | Percentage (%) |
| Nickel (Ni) | 58 minimum |
| Chromium (Cr) | 20-23 |
| Molybdenum (Mo) | 8-10 |
| Iron (Fe) | 5 maximum |
| Niobium (Nb) | 3.15-4.15 |
| Copper (Cu) | 0.5 maximum |
| Manganese (Mn) | 1.0 maximum |
| Silicon (Si) | 0.5 maximum |
| Carbon (C) | 0.10 maximum |
| Phosphorus (P) | 0.015 maximum |
| Sulfur (S) | 0.015 maximum |
Mechanical Properties
| Property | Value |
| Yield Strength | 240 MPa (35 ksi) minimum |
| Ultimate Tensile Strength | 550 MPa (80 ksi) minimum |
| Elongation (in 2 in. / 50mm) | 40% minimum |
| Hardness (Rockwell B) | 85-95 |
| Modulus of Elasticity | 210 GPa (30 x 10³ ksi) |
Physical Property
| Property | Value |
| Density | 8.44 g/cm³ (0.305 lb/in³) |
| Melting Point (°C/°F) | 1290-1350°C (2350-2460°F) |
| Thermal Conductivity | 11.5 W/m·K at 20°C |
| Specific Heat Capacity | 0.435 J/g·°C |
| Electrical Resistivity | 1.24 µΩ·m |
Specifications Of Inconel 625 Tube
Inconel 625 Seamless Tube Dimensions (ASTM B444)
| Nominal Bore (NB) | Outer Diameter Range (mm) | Wall Thickness Range (mm) | Common Schedules |
| 1/4″ | 13.7 ±0.1 | 0.89–2.24 | Sch 10/40/80 |
| 1/2″ | 21.3 ±0.2 | 1.65–4.78 | Sch 10/40/80 |
| 1″ | 33.4 ±0.3 | 2.11–6.35 | Sch 40/80/160 |
| 2″ | 60.3 ±0.4 | 2.77–8.74 | Sch 10/40/160 |
| 4″ | 114.3 ±0.5 | 3.76–12.70 | Sch 40/80/XXS |
| 6″ | 168.3 ±0.6 | 4.19–14.27 | Sch 40/XXS |
Inconel 625 Welded Tube Dimensions (ASTM B444)
| Nominal Bore (NB) | Outer Diameter Range (mm) | Wall Thickness Range (mm) | Common Schedules |
| 1″ | 33.4 ±0.3 | 1.65–6.35 | Sch 5S/10S/40S |
| 4″ | 114.3 ±0.5 | 2.11–12.70 | Sch 10S/40S/80S |
| 8″ | 219.1 ±0.8 | 2.77–15.09 | Sch 10S/40S/XXS |
| 12″ | 323.9 ±1.0 | 3.76–20.00 | Sch 10S/80S/XXS |
| 16″ | 406.4 ±1.2 | 4.19–25.40 | Sch 40S/XXS |
What are the features of Inconel 625 Pipe?
Inconel 625 is a high temperature alloy known for its excellent comprehensive properties.

Corrosion resistance in extreme environments
Excellent mechanical strength and toughness


High temperature and high pressure stability
Application Of Inconel Alloy 625 Pipe
After decades of verification, Gnee has a mature production process, and Inconel 625 has been supplied to the following industries around the world

Aerospace components
Alloy 625 can be used to make engine fuel lines, hydraulic systems, combustion chamber components, etc.

Marine engineering field
Inconel 625 pipe is also suitable for manufacturing seawater utilization facilities, marine pipelines, etc.

Chemical and petrochemical fields
Inconel 625 pipe is suitable for high temperature and high pressure environment, and can be used to make corrosive process equipment, special valves/pipe fittings, etc.

Nuclear and energy fields
625 pipe can be used to make nuclear reactor cooling system pipes, environmental protection energy pipes, etc.
What other alloy Pipe grades do we supply?
In addition to Inconel 625, we can also provide the following grades of nickel-based alloys
FAQ
Below are some frequently asked questions about Inconel 625 tube. If you have any other questions, please feel free to contact us.





















































































