Copper-nickel alloys, also known as Cu-Ni alloys, are composed primarily of copper and nickel, with trace amounts of other elements like iron and manganese. These alloys are recognized for their high strength, excellent corrosion resistance, low electrical resistance, and favorable thermoelectric properties. They are especially known for reducing the temperature coefficient of resistivity, making them superior to many other copper alloys in mechanical and physical performance. CuNi alloys feature excellent ductility, high hardness, attractive appearance, resistance to corrosion, deep drawing capabilities, and good performance at both room temperature and high temperatures. Furthermore, they offer excellent machinability, weldability, and are non-magnetic.
Available grades: CuNi1, CuNi2, CuNi6, CuNi8, CuNi10, CuNi14, CuNi19, CuNi23, CuNi30, CuNi34, CuNi44
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Plate / Sheet
- Thickness: 0.2mm-100mm
- Width: 50mm-2000mm
- Size: Standard size (e.g. 1000mm×2000mm, 1200mm×2400mm), or customizable
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Rod
- Diameter: 2mm-250mm
- Length: 1m-6m, or customizable
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Wire
- Diameter: 0.01mm-8mm
- Wire Type: Bright shiny wire, annealed wire, etc.
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Tube
- Outer Diameter: 3mm-500mm
- Wall Thickness: 0.5mm-50mm
- Length: 1m-6m, or customizable
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Strip
- Thickness: 0.01mm-0.2mm
- Width: 5mm-300mm
Our production adheres to JIS G4313 standards, ensuring compliance with international quality benchmarks.
Equivalent overseas standards are listed for reference.
- ISO 13380, 197-6
- ASTM B111, B151, B466, B122
- DIN 86019, 17664
- EN 12449, 12451
- GB/T 5231, 8890, 2059
| Grades | NC003 | NC005 | NC010 | NC012 | NC015 | NC020 | NC025 | NC030 | NC035 | NC040 | NC050 | |
| Main Chemical Composition (%) | Nickel (Ni) | 1 | 2 | 6 | 8 | 10 | 14.2 | 19 | 23 | 30 | 34 | 44 |
| Manganese (Mn) | / | / | / | / | / | 0.3 | 0.5 | 0.5 | 1 | 1 | 1 | |
| Copper (Cu) | Rest | Rest | Rest | Rest | Rest | Rest | Rest | Rest | Rest | Rest | Rest | |
| Grades | NC003 | NC005 | NC010 | NC012 | NC015 | NC020 | NC025 | NC030 | NC035 | NC040 | NC050 |
| CuNi1 | CuNi2 | CuNi6 | CuNi8 | CuNi10 | CuNi14 | CuNi19 | CuNi23 | CuNi30 | CuNi34 | CuNI44 | |
| Max. Service Temperature (°C) | 200 | 200 | 220 | 250 | 250 | 300 | 300 | 300 | 350 | 350 | 400 |
| Density (g/cm³) | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 |
| Resistivity at 20℃ (μΩ·m) | 0.03±10% | 0.05±10% | 0.10±10% | 0.12±10% | 0.15±10% | 0.20±5% | 0.25±5% | 0.30±5% | 0.35±5% | 0.40±5% | 0.5±5% |
| Resistance Temperature Coefficient ×10⁻⁶/ºC (20~600ºC) | <100 | <120 | <60 | <57 | <50 | <38 | <25 | <16 | <10 | 0 | 210 |
| Tensile Strength (Mpa) | >210 | >220 | >250 | >270 | >290 | >310 | >340 | >350 | >400 | >400 | >420 |
| Elongation at Rupture (%) | >25 | >25 | >25 | >25 | >25 | >25 | >25 | >25 | >25 | >25 | >25 |
| Melting Point (°C) | 1085 | 1090 | 1095 | 1097 | 1100 | 1115 | 1135 | 1150 | 1170 | 1180 | 1280 |
| Thermoelectric Potential of Copper (μV/℃) (0~100℃) | -8 | -12 | -18 | -22 | -25 | -28 | -32 | -34 | -37 | -39 | -43 |
- Exceptional performance in seawater, chloride solutions, and other corrosive environments, resisting pitting and crevice corrosion
- Suitable for applications requiring significant load-bearing capacity or high pressure
- Easily welded, cold-processed, hot-processed, and forged, facilitating the production of complex parts
- Ideal for high-speed motion and high-friction environments, reducing wear and fatigue damage
- Low magnetic permeability, which is crucial for applications sensitive to magnetic fields
- Stable electrical resistance and excellent conductivity with low temperature coefficients
- Resistant to microorganisms and algae growth, especially beneficial in long-term water-contact applications
- Marine engineering: Used in shipbuilding, offshore platform construction, and heat exchangers for desalination plants
- Chemical industry: Utilized in the manufacture of reaction vessels, piping, and other equipment exposed to chemicals
- Power and energy: Found in cooling system components for nuclear and thermal power plants
- Oil and gas extraction: Applied in oil well tubing, subsea pipelines, and other components exposed to harsh conditions
- Aerospace: Used for various aircraft structural parts and engine components
- Telecommunications: Employed in antenna coils, magnetic cores for electronic circuits, and small transformers
- Medical equipment: Used in non-magnetic components of medical machines such as MRI scanners
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- Raw material purity is verified through spectrographic analysis, and key production processes are monitored in real time.
- Finished products undergo 100% inspection, with a pass rate of over 99%.
- Products comply with applicable standards, including ASTM and GB, and have obtained ISO, TÜV, CE, RoHS, and other certifications.
Strict Quality Control -
Reliable DeliverySmall-batch orders are delivered within 10–30 days, while large-volume orders usually take around 60 days, helping ensure on-time delivery.
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- With over 20 years of industry experience, DLX Alloy provides customized alloy solutions, adjusting material specifications and chemical compositions according to customer requirements and offering professional technical support.
- Standard and custom are available for fast prototyping, with standard samples ready in 7–10 days.
- Sample testing supports small-batch testing and validation, helping customers verify material performance through actual test data and reduce trial-and-error costs during R&D.
Customization and Sample Support