Luois Metals stands out as a reliable manufacturer and supplier of **Copper Nickel Round Bars**, proudly based in Houston, USA. We specialize in high-quality copper-nickel alloy bars that are designed to resist corrosion, particularly in marine and seawater settings. Known for their durability and anti-fouling properties, Copper Nickel (Cu-Ni) alloys perform exceptionally well under high pressure and temperature. Our round bars come in various Cu-Ni grades, including 70/30 (C71500) and 90/10 (C70600), and we can customize sizes and finishes to fit your specific project or industry needs.
When it comes to composition, **Copper Nickel Round Bars** typically consist of 90% or 70% copper paired with 10% or 30% nickel, along with trace amounts of iron and manganese to boost strength and corrosion resistance. These alloys excel in resisting biofouling, erosion, and stress corrosion cracking, making them perfect for challenging saltwater and chemical environments. They maintain solid mechanical properties even at elevated temperatures, showcasing high thermal stability and moderate tensile strength. Plus, their non-magnetic nature and excellent weldability make them a great choice for both marine and industrial applications.
| Specifications | ASTM B151 / ASME SB151 |
|---|---|
| Dimensions | ASTM, ASME and API |
| Size | 5 mm To 500 mm |
| Diameter | 10 mm To 100 mm |
| Length | 100 mm To 3000 mm Long & Above, 100 mm TO 90/100 mm |
| Finish | Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish |
| Form | Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wiremesh, Billet, Ingot, Forging Etc., |
| Condition | Cold Drawn & Polished Cold Drawn, Centreless Ground & Polished |
| Grade | Cu | Mn | Pb | Ni | Fe | Zn |
| Cu-Ni 90-10 | 88.6 min | 1.0 max | .05 max | 9-11 max | 1.8 max | 1 max |
| Cu-Ni 70-30 | 65.0 min | 1 max | .05 max | 29-33 | 0.4-1.0 | 1 max |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Copper Nickel 90/10, 70/30 | 0.323 lb/in3 at 68 F | 2260 F | 50000 psi | 20000 psi | 30 % |
| Bar Diameter (mm) | Weight (kg/m) |
|---|---|
| 6 | 0.22 |
| 8 | 0.39 |
| 10 | 0.62 |
| 12 | 0.89 |
| 16 | 1.58 |
| 20 | 2.47 |
| 25 | 3.85 |
| 32 | 6.31 |
| 40 | 9.86 |
| 45 | 12.5 |
| 50 | 15.4 |
| 60 | 22.2 |
| 65 | 26.0 |
| 75 | 34.7 |
| 90 | 49.9 |
| 100 | 61.6 |
| STANDARD | WERKSTOFF NR. | UNS |
| Cupro Nickel 90/10 | 2.0872 | C70600 |
| Cupro Nickel 70/30 | 2.0882 | C71500 |
| Type | SIZES (mm) | SIZES (Inches) | ISO Tolerance |
|---|---|---|---|
| Cold Drawn and Ground | 10.00 – 75.00 | 5/6″ – 2.50″ | h8-h9-h10-h11 |
| Peeled and Polished | 40.00 – 150.00 | 1.50″ – 6.00″ | h11, h11-DIN 1013 |
| Peeled and Ground | 20.00 – 50.00 | 3/4″ – 2.00″ | h9-h10-h11 |
| Cold Drawn and Polish | 3.00 – 75.00 | 1/8″ – 3.00″ | h8-h9-h10-h11 |
Yes, copper-nickel round bars are customizable in terms of alloy composition, dimensions, mechanical properties, and surface finishes to meet specific application requirements across various industries.
To select the right copper-nickel round bars, consider the alloy composition (90/10 or 70/30), required corrosion resistance, mechanical properties, application environment (marine, industrial), and specific performance needs like strength or durability.
Yes, copper-nickel round bars are fully recyclable. Their composition allows them to be efficiently recycled without losing their properties, making them an environmentally sustainable choice for various applications.
These round bars find their place in a variety of uses, including marine hardware, condenser tubes, desalination equipment, shipbuilding components, heat exchangers, offshore oil platforms, and seawater piping systems. With their long service life and minimal maintenance needs, they offer a cost-effective solution for both commercial and defense maritime sectors. At Luois Metals, we provide **Copper Nickel Round Bars** in a wide range of diameters and lengths, all fully certified and tested to meet international standards, ensuring top-notch quality and reliability for your most critical applications.






We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Louis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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