Ni270(N4) Seamless Pipe Supplier | UNS N02270 Pure Nickel Seamless Pipe
Short Description:
High-purity nickel seamless pipe for electrical, instrumentation, vacuum, and clean service applications. Custom sizes, MTC 3.1, PMI, and export-safe packing available from SAKY STEEL.
If your project needs a high-purity nickel material with excellent electrical conductivity, good thermal conductivity, stable corrosion resistance, and good ductility, Ni270 (N4) seamless pipe is a more suitable choice than ordinary stainless steel or general industrial nickel pipe.
Ni270 is commonly identified as UNS N02270 and W.Nr. 2.4050. It is known as a high-purity wrought nickel grade and is especially valued in electronic, electrical, instrumentation, vacuum, precision sensing, and high-purity service systems where consistency matters more than structural strength.
| Specifications of Ni270 seamless pipe: |
| Item | Description | Buyer Concern |
|---|---|---|
| Product Name | Ni270 (N4) Seamless Pipe / Seamless Tube | Confirm whether the project requires pipe or precision tube |
| Material Grade | UNS N02270 / W.Nr. 2.4050 / Nickel 270 | Confirm actual material designation in MTC |
| Production Route | Cold drawn seamless / custom processed seamless nickel pipe | Check wall tolerance, straightness, and delivery condition |
| Outer Diameter | Common custom range: 6 mm – 76.2 mm | Larger sizes should be confirmed case by case |
| Wall Thickness | Typical custom range: 0.5 mm – 5.0 mm | Thin wall requires tolerance confirmation before quote |
| Length | 1000 mm – 6000 mm, fixed length or cut to length | Confirm if random length is acceptable |
| Surface Finish | Pickled / Bright Annealed / Polished | Specify surface requirements clearly |
| Inspection | PMI, chemical analysis, mechanical test, dimensional inspection | Third-party inspection available upon request |
| Documents | MTC EN 10204 3.1, packing list, invoice, test report | Needed for project approval and import clearance |
| Typical Size Comparsion Table : |
| Outside Diameter (mm) | Wall Thickness (mm) | Typical Length | Supply Status |
|---|---|---|---|
| 6.0 | 1.0 / 1.5 | 1000–6000 mm | Custom production |
| 8.0 | 1.0 / 1.5 / 2.0 | 1000–6000 mm | Common small-size option |
| 10.0 | 1.0 / 1.5 / 2.0 | 1000–6000 mm | Common |
| 12.7 | 1.24 / 1.65 / 2.11 | 1000–6000 mm | Instrumentation related use |
| 15.88 | 1.24 / 1.65 / 2.11 | 1000–6000 mm | Custom cut length available |
| 19.05 | 1.65 / 2.11 / 2.77 | 1000–6000 mm | Custom |
| 25.4 | 1.65 / 2.11 / 2.77 / 3.0 | 1000–6000 mm | Regular custom order |
| 31.75 | 2.0 / 2.77 / 3.0 | 1000–6000 mm | Custom |
| 38.1 | 2.0 / 2.77 / 3.0 / 3.5 | 1000–6000 mm | Custom |
| 50.8 | 2.77 / 3.0 / 4.0 | 1000–6000 mm | Large size custom |
| 63.5 | 3.0 / 4.0 / 5.0 | 1000–6000 mm | Made to order |
| 76.2 | 3.0 / 4.0 / 5.0 | 1000–6000 mm | Made to order |
| Standard,Internation Equivalents,and Material Date : |
| System / Region | Designation |
|---|---|
| UNS | N02270 |
| DIN / Werkstoff | 2.4050 |
| Commercial Name | Nickel 270 / Alloy 270 |
| China Market Trade Name | Ni270 / N4 high-purity nickel seamless pipe |
| Chemical Composition Ni270 pipe: |
| Element | Typical Requirement |
|---|---|
| Ni + Co | ≥ 99.9% |
| Cu | ≤ 0.01% |
| Fe | ≤ 0.05% |
| C | ≤ 0.02% |
| Mn | ≤ 0.003% – 0.005% |
| S | ≤ 0.003% |
| Si | ≤ 0.005% |
| Ti | ≤ 0.005% |
| Mg | ≤ 0.005% |
| Mechanical and Physical Properties: |
| Mechanical Properties | |
|---|---|
| Tensile Strength | ≥ 340 MPa |
| Yield Strength (0.2%) | ≥ 110 MPa |
| Elongation | ≥ 50% |
| Elastic Modulus | Approx. 207 GPa |
| Hardness | Approx. HRB 80 |
| Physical Properties | |
|---|---|
| Density | 8.91 g/cm³ |
| Melting Point | Approx. 1454°C |
| Electrical Resistivity | Approx. 7.5 μΩ·cm |
| Thermal Conductivity | Approx. 79–86 W/m·K |
| Thermal Expansion | Approx. 13.3–14.0 ×10⁻⁶/°C |
| Regular Stock and Supply Table: |
| OD (mm) | WT (mm) | Length | Typical Supply Mode |
|---|---|---|---|
| 6.0 | 1.0 / 1.5 | 1 m – 6 m | Made to order |
| 8.0 | 1.0 / 1.5 / 2.0 | 1 m – 6 m | Made to order |
| 10.0 | 1.0 / 1.5 / 2.0 | 1 m – 6 m | Made to order |
| 12.7 | 1.24 / 1.65 / 2.11 | 1 m – 6 m | Made to order |
| 15.88 | 1.24 / 1.65 / 2.11 | 1 m – 6 m | Made to order |
| 19.05 | 1.65 / 2.11 / 2.77 | 1 m – 6 m | Made to order |
| 25.4 | 1.65 / 2.11 / 2.77 / 3.0 | 1 m – 6 m | Made to order |
| 31.75 | 2.0 / 2.77 / 3.0 | 1 m – 6 m | Made to order |
| 38.1 | 2.0 / 2.77 / 3.0 / 3.5 | 1 m – 6 m | Made to order |
| 50.8 | 2.77 / 3.0 / 4.0 | 1 m – 6 m | Made to order |
| Applications:where Ni270(N4) seamless pipe actually makes sense |
- Electronics and Electrical Components: sensor housings, precision electrical components, resistance-related components, high-purity conductive parts
- Instrumentation and Measurement Systems: protective tubes, signal system components, precision instrument structures
- Vacuum and Special Equipment: vacuum system parts, clean service assemblies, special lab systems
- Chemical and High-Purity Service: small-diameter pipe for clean media transfer, special process systems, corrosion-sensitive components
- Aerospace and Defense Support Components: non-structural electrical or precision-use parts where material purity and consistency are important
Application Examples Buyers Often Ask About
| Industry | Possible Use | Why Ni270 Is Chosen |
|---|---|---|
| Electronics | High-purity conductive housings and precision component tubes | High purity and stable electrical behavior |
| Instrumentation | Sensor and thermometer-related tube components | Good ductility and stable material consistency |
| Chemical Systems | Clean media transfer and special process lines | Stable corrosion resistance and clean internal surface potential |
| Vacuum Equipment | Vacuum or precision device tubing | High-purity nickel performance |
| Aerospace / Defense Support | Special electrical or precision-use subcomponents | Purity and controlled material behavior, not structural strength |
| Production Process Flow : |
| Process Step | Main Content | Control Point |
|---|---|---|
| Raw Material Preparation | High-purity nickel raw material confirmation | Chemistry and traceability |
| Melting / Refining | Purity-controlled production route | Impurity control |
| Billet Forming | Forging / piercing preparation | Material uniformity |
| Hot Working | Tube shell forming | Basic OD and wall formation |
| Cold Drawing | Precision seamless sizing | Wall tolerance and straightness |
| Annealing | Improve ductility and structure | Mechanical properties |
| Pickling / Surface Treatment | Remove scale and improve finish | Surface cleanliness |
| Straightening | Correct line and appearance | Straightness |
| Cutting to Length | Fixed length or custom length | Length tolerance |
| Inspection | Chemical, mechanical, PMI, dimensional checks | Final quality confirmation |
| Packing | Wooden case / waterproof snake skin bag | Transport safety |
| FAQ : |
1. Can Ni270 seamless pipe be quoted directly as ASTM B161?
It is better to describe it more carefully. ASTM B161 publicly lists UNS N02200 and UNS N02201 for seamless nickel pipe and tube. Ni270 is commonly recognized as UNS N02270, so the safest commercial wording is to quote it by chemistry, dimensions, delivery condition, and inspection agreement.
2. Is N4 exactly the same as Ni270?
Not always. In some markets, N4 is used as a trade name and may be interpreted differently by different suppliers. Serious buyers should confirm the UNS number, chemical composition, and MTC rather than relying only on the trade name.
3. Is Ni270 suitable for high-temperature high-pressure structural piping?
Usually that is not the main reason to choose it. Ni270 is more valuable for purity, conductivity, ductility, and clean service behavior than for high structural strength.
4. Can SAKY STEEL provide custom cutting and processing?
Yes. We can support fixed length cutting, deburring, end protection, polishing, pickling, marking, and export packing according to order requirements.
5. What information should I send for an accurate quotation?
Please send material grade, UNS number if available, outside diameter, wall thickness, length, quantity, surface finish, document requirements, inspection requirements, and packing requirements.
6. Can you provide ISO 9001 related support?
Yes. ISO 9001 quality management support helps with process consistency and traceability. However, project approval still depends on the actual chemistry, dimensions, inspection results, and mill test certificate.
| Why Choose SAKYSTEEL : |
Reliable Quality – Our stainless steel bars, pipes, coils, and flanges are manufactured to meet international standards such as ASTM, AISI, EN, and JIS.
Strict Inspection – Every product undergoes ultrasonic testing, chemical analysis, and dimensional control to ensure high performance and traceability.
Strong Stock & Fast Delivery – We maintain regular inventory of key products to support urgent orders and global shipping.
Customized Solutions – From heat treatment to surface finish, SAKYSTEEL offers tailor-made options to match your exact requirements.
Professional Team – With years of export experience, our sales and technical support team ensures smooth communication, quick quotations, and full documentation service.
| SAKY STEEL’S Quality Assurance (including both Destructive and Non-Destructive) : |
1. Visual Dimension Test
2. Mechanical examining like tensile, Elongation and reduction of area.
3. Impact analysis
4. Chemical examination analysis
5. Hardness test
6. Pitting protection test
7. Penetrant Test
8. Intergranular Corrosion Testing
9. Roughness Testing
10. Metallography Experimental Test
| SAKY STEEL’S Packaging: |
1. Packing is quite important especially in a case of international shipments in which consignment pass through various channels to reach the ultimate destination, so we put special concern regarding packaging.
2. Saky Steel’s pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as,
