Inconel X-750 Capillary Tube (UNS N07750 / W.Nr. 2.4669)
High-strength corrosion-resistant alloy Pipe Tube for nuclear power and heat treatment
As a leading Chinese Inconel supplier, SEATHER TECHNOLOGY manufactures and supplies high-precision Inconel X-750 capillary tubes for demanding industrial and high-performance applications.
INCONEL® alloy X-750 (UNS N07750 / W.Nr. 2.4669) is a precipitation-hardenable nickel-chromium alloy known for its excellent corrosion resistance, oxidation resistance, and outstanding high-temperature strength. The alloy performs reliably at temperatures up to 1300°F (704°C) and, after proper heat treatment, retains useful mechanical strength at temperatures approaching 1800°F (982°C), making it suitable for critical components operating in extreme environments.
Inconel X-750 capillary tube is a small-diameter, high-precision alloy tube with stringent manufacturing requirements and high processing difficulty. It is typically produced from Inconel X-750 coil tubing, followed by precision straightening, polishing, and dimensional control to achieve tight tolerances and superior surface quality. These capillary tubes are widely used in applications that require excellent corrosion resistance, high-temperature stability, and precise internal structures, such as instrumentation systems, aerospace components, and high-performance control devices.
From a manufacturing perspective, SEATHER TECHNOLOGY can supply both seamless Inconel X-750 capillary tubes and welded Inconel X-750 capillary tubes, depending on size requirements and application needs. For surface treatment, we offer a variety of finishing options including MP (Mechanical Polishing), EP (Electropolishing), BA (Bright Annealed), and AP (Annealed & Pickled), ensuring the tubes meet different cleanliness, roughness, and performance standards. Our Inconel X-750 capillary tubes feature excellent appearance, strict dimensional tolerances, and stable performance, providing reliable solutions for high-end and precision-critical applications.
Inconel X-750 Capillary Tube (UNS N07750) Specifications & Srtandard
- OD Range: Φ0.1 – Φ6mm
- Wall Thickness: Φ0.01 – Φ2mm
- Length: 50mm – 30000mm
- Customized size needs to be confirmed with our team
- Grades: X-750 / UNS N07750 / W.Nr. 2.4669
- Standards: SAE AMS 5582
ASTM B829
ASME SB 829 - Finish: MP / EP / BA / AP Surface
- Brand: SEATHER TECHNOLOGY, Special Metals(SMC), HAYNES International, VDM Metals, ATI, etc.
Inconel X-750 Capillary Tube (UNS N07750) Applications & Usages
Inconel Alloy X-750 can be used in a variety of applications including:
- Rocket engines
- Gas turbine engines
- Nuclear reactors
- Nuclear valves
- Pressure vessels
- Tooling
- Aircraft structure
Inconel X-750 Capillary Tube (UNS N07750) Drawing & Formula
Formula: m = (OD – THK) × THK (mm) × L (m) × ρ (g/cm³) × π ÷ 1000
OD = Outside Diameter, THK = Wall Thickness, L = Length
ρ = Density, π = 3.1415926…
What is Inconel X-750 (UNS N07750)
Alloy X-750 also referred to as the UNS N07750 and W.Nr. 2.4669 alloy.
Alloy X-750 is a precipitation-hardenable nickel-chromium alloy used for its corrosion and oxidation resistance and high strength at temperatures to 1300°F. Although much of the effect of precipitation hardening is lost with increasing temperature over 1300°F, heat-treated material has useful strength up to 1800°F.
Alloy X-750 also has excellent properties down to cryogenic termperatures.
Similar to Alloy 600, Alloy X-750 has additional aluminium and titanium.
Alloy X-750 offers outstanding performance in highly stressed environments, which is why it’s often used in gas turbines, nuclear reactors and aircraft structures.
Inconel X-750 Capillary Tube (UNS N07750) Chemical Composition
| Grade | Standard | C | Si | Mn | P | S | Cr | Ni | Ti |
| Inconel X-750 | AMS 5542 | ≤0.08 | ≤0.50 | ≤1.00 | ≤0.015 | ≤0.010 | 14.00-17.00 | ≥70 | 2.25-2.75 |
Inconel X-750 Capillary Tube (UNS N07750) Mechanical Properties
| Element | Yield Strength (0.2%Offset) | Melting Point | Density | Tensile Strength | Elongation |
| X-750 | MPa – 630 | 1427 °C (2600 °F) | 8.28 g/cm3 | MPa – 980 | Min 8 % |

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More Information About Inconel X-750 Capillary Tube (UNS N07750)
When you choose to buy Inconel X-750 Capillary Tube, there have some important points we need to know before we get started.
Pitting resistance equivalency numbers (PREN) for Inconel X-750 Capillary Tube (UNS N07750)
Inconel X-750 PREN: 16
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% How to Purchase Inconel X-750 Capillary Tube (UNS N07750)
When purchasing alloy capillary tube, 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 X-750 (UNS N07750)
2. Size: Specify the Outer Diameter, Inner Diameter, Wall thickness, Length, Delivery State, finish, 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 pipe tube 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 X-750: Composition, Properties and Applications.
If you need to purchase alloy X-750 products, 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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