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Home > Copper Nickel > Copper Nickel 70/30 Tubing
Copper Nickel 70/30 Tubing is engineered for the harshest environments where corrosion resistance and strength are critical to survival. With a higher nickel content, this alloy delivers exceptional durability, superior resistance to seawater corrosion, and long-term stability under extreme operating conditions. It performs reliably under high pressure, elevated temperatures, and continuous exposure to aggressive fluids. Trusted across marine and offshore industries, Copper Nickel 70/30 Tubing offers excellent mechanical strength, thermal conductivity, and fabrication performance. When systems demand toughness, longevity, and uncompromising reliability, this tubing stands firm without hesitation.
Copper Nickel 70/30 Tubing is made up of 70% copper and 30% nickel, often with small amounts of iron and manganese to boost strength and corrosion resistance. This alloy showcases impressive mechanical properties, including high tensile and yield strength, good ductility, and outstanding resistance to erosion and pitting. It remains stable even in extreme temperatures and salty environments, making it perfect for tough conditions. Its blend of strength and flexibility allows it to handle high-pressure systems while being easy to fabricate, bend, and join, ensuring reliability and longevity in industrial setups.
Specification : ASTM B466, B467, B111 / ASME SB466, SB467, SB111
Standard : ASTM, ASME and API
Size : 1/2″ TO 6′ IN OD & NB IN Various SWG & SCH
Outer Diameter : 4.00 to 22.00 mm
Wall Thickness : Between 0.15mm and 1.50 mm
Type : Seamless / ERW / Welded / Fabricated Pipes
Form : Round, Square, Rectangular, Oval, Hydraulic Etc
Length : Single Random, Double Random & Required Length
End : Plain End, Beveled End, Treaded
Schedule : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Inspection, Test Reports : Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports, Destructive Test Report, Non Destructive Test Reports
Packing : Packed in Wooden Boxes, Plastic Bags, Steel Strips Bundled, or as per Customers Requests
Specials : Sizes and Specifications other than above can be manufactured on request
| Grade | Cu | Mn | Pb | Ni | Fe | Zn |
|---|---|---|---|---|---|---|
| Cu-Ni 70-30 | 65.0 min | 1 max | .05 max | 29-33 | 0.4-1.0 | 1 max |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength, ultimate | 372-517 MPa | 54000-75000 psi |
| Tensile strength, yield (depending on temper) | 88.0-483 MPa | 12800-70100 psi |
| Elongation at break (in 381 mm) | 45.0% | 45.0% |
| Charpy impact | 107 J | 78.9 ft-lb |
| Machinability (UNS C36000 (free-cutting brass) = 100%) | 20% | 20% |
| Shear modulus | 57.0 GPa | 8270 ksi |
| Poisson’s ratio | 0.34 | 0.34 |
| Elastic modulus | 150 GPa | 21800 ksi |
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8.94 g/cm3 | 0.323 lb/in3 |
| Melting point | 2140°F | 1171°C |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Choosing Copper Nickel 70/30 Tubing from Samia Pipes and Tubes ensures outstanding corrosion resistance, high strength, and durability. Our Tube is designed for diverse industrial applications, delivering reliability and performance in challenging environments while maintaining competitive pricing.
Samia Pipes and Tubes, one of the largest suppliers of Copper Nickel 70/30 Tubing in Tunis, Tunisia, offers a comprehensive range of high-quality pipes and tubes suitable for various industrial applications. Their extensive inventory and commitment to exceptional service make them a go-to choice for copper nickel products in the region.
| Size (in) | Wall Thickness (in) | Outside Diameter (in) | Approx Weight (lbs/ft) |
|---|---|---|---|
| 3/8 OD | 0.049 | 0.38 | 0.2 |
| 2-1/2 | 0.38 | 2.88 | 12.1 |
| 1/4 OD | 0.035 | 0.25 | 0.1 |
| 1/4 | 0.072 | 0.54 | 0.43 |
| 1/2 | 0.120 | 0.84 | 1.1 |
| 3/8 | 0.095 | 0.68 | 0.19 |
| 1 | 0.180 | 1.32 | 2.61 |
| 1-1/4 | 0.220 | 1.66 | 2.18 |
| 3/4 | 0.148 | 1.05 | 1.71 |
| 1-1/2 | 0.25 | 1.9 | 5.25 |
| 2 | 0.340 | 2.38 | 8.85 |
| 3 | 0.46 | 3.5 | 18.7 |
Yes, we offer custom sizes for Copper Nickel 70/30 Tubing to meet your specific requirements. Our team at Samia Pipes and Tubes is committed to providing tailored solutions for all your Piping & tubing needs. For more details, contact us at sales@samiapipes.com.
You’ll find Copper Nickel 70/30 Tubing widely used in marine, offshore, and chemical industries thanks to its remarkable resistance to seawater corrosion. It’s commonly found in desalination plants, heat exchangers, condensers, and cooling water systems. The tubing also plays a vital role in oil and gas applications, power plants, and shipbuilding for pipelines, hydraulic lines, and condensate lines. Its durability and resistance to biofouling make it perfect for long-term underwater and coastal installations. Plus, it’s a favorite in industrial systems that require hygiene and chemical resistance, delivering efficient performance, lower maintenance costs, and improved operational safety.
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