Copper Nickel
What is Copper Nickel?
Copper Nickel, also known as Cupronickel, is an alloy primarily composed of copper and nickel, with additions of iron and manganese to improve its strength and corrosion resistance. This alloy is widely valued for its excellent resistance to seawater corrosion, making it ideal for marine, desalination, and heat exchange applications.
Asiad Steel Industries is a reputed manufacturer and supplier of high-quality Copper Nickel alloys in a wide range of forms and grades.
Key Features
Thermal
Stability
Durable
Construction
Precision
Finish
Wide
Compatibility
Corrosion
Resistant
Specifications
| Specification Category | Parameter / Feature | Details / Options |
|---|---|---|
| Size Range | Nominal Size | 10 mm × 10 mm to 500 mm × 500 mm (custom sizes available) |
| Pressure Ratings | ANSI / ASME Class | Class 150, 300, 600, 900, 1500, 2500 |
| PN Ratings | PN6, PN10, PN16, PN25, PN40, PN64 | |
| Product Types | CuNi Pipes | ERW & Seamless, standard wall thickness |
| CuNi Sheets / Plates | 2B, Hot Rolled, Matt, Mirror Finish, Coloured | |
| CuNi Rods / Bars | Round, Hex, Square | |
| CuNi Fittings | Elbows, Tees, Reducers, Couplings | |
| Material Options | Copper Nickel Grades | CuNi 90/10, CuNi 70/30 |
| Other Alloys | – | Monel-CuNi alloys, customized grades available |
| Standards & Certifications | ASTM | ASTM B111, ASTM B466, ASTM B165 |
| ASME / ANSI | ASME B36.10, ASME B36.19 | |
| European Standards | EN 12451, EN 1652 | |
| Certifications | ISO 9001, PED 2014/68/EU, NACE MR0175 | |
| Design Features | Wall Thickness | As per ASTM / EN / ASME, customized options available |
| End Connections | Plain Ends, Beveled Ends | |
| Tolerance | As per ASTM / ASME / EN standards | |
| Coating & Surface Finish | Anti-Corrosion Coating | Passivation, Oxide Layer |
| Optional Coatings | PTFE, PVD, Electroplating | |
| Surface Finish | Mill Finish, Pickled, Polished, Bead Blasted | |
| Testing & Inspection | Pressure Testing | Hydrostatic, Pneumatic |
| Non-Destructive Testing | Radiography (RT), Ultrasonic (UT), Dye Penetrant (DPT) | |
| Destructive Testing | Tensile, Hardness, Impact |
Dimensions
| Product Type | Nominal Size / Diameter (mm) | Wall Thickness (mm) | Width (mm) | Length (mm) | Weight (kg/m) | Tolerance |
|---|---|---|---|---|---|---|
| CuNi Pipes (ERW / Seamless) | 10 – 500 | 1 – 25 | – | 6 – 12 m standard | 0.2 – 400 | ±0.1 – ±0.5 mm |
| CuNi Sheets / Plates | 10 × 10 – 500 × 500 | 1 – 50 | 100 – 2000 | 1000 – 6000 | 2 – 150 | ±0.2 – ±1 mm |
| CuNi Rods / Bars (Round) | 10 – 200 | – | – | 1000 – 6000 | 0.2 – 25 | ±0.1 – ±0.5 mm |
| CuNi Rods / Bars (Hex) | 10 – 150 | – | 10 – 150 | 1000 – 6000 | 0.15 – 20 | ±0.1 – ±0.5 mm |
| CuNi Rods / Bars (Square) | 10 – 150 | – | 10 – 150 | 1000 – 6000 | 0.15 – 20 | ±0.1 – ±0.5 mm |
| CuNi Fittings (Elbows / Tees / Reducers / Couplings) | DN 10 – DN 500 | As per ASME / ASTM | – | – | As per size | ±0.2 – ±1 mm |
Mechanical Properties
| Property | Value | Unit / Standard |
|---|---|---|
| Tensile Strength | 250 – 450 | MPa (CuNi 90/10, CuNi 70/30) |
| Yield Strength | 100 – 300 | MPa |
| Hardness | 60 – 160 | HB (Brinell) |
| Elongation | ≥ 20 – 40 | % |
| Density | 8.9 – 8.95 | g/cm³ |
| Impact Toughness | ≥ 20 – 60 | J (Charpy, grade-dependent) |
| Modulus of Elasticity (E) | 120 – 150 | GPa |
| Fatigue Strength | 150 – 300 | MPa |
| Corrosion Resistance | Excellent in seawater | – |
| Thermal Conductivity | 30 – 50 | W/m·K |
| Coefficient of Thermal Expansion | 16 – 18 ×10⁻⁶ | /°C |
| Yield Ratio (YS/UTS) | 0.35 – 0.65 | – |
| Poisson’s Ratio | 0.31 – 0.34 | – |
| Brinell Hardness Range | 60 – 160 | HB |
| Surface Finish | Mill, Polished, Pickled | – |
| Welding Type | TIG, MIG, Resistance | – |
| Operating Temperature Range | -50 to 300 | °C (grade-dependent) |
| Pressure Rating | Class 150, 300, 600, 900, 1500, 2500 | ASME B16.5 Standards |
Chemical Composition
| Element | Copper Nickel 90/10 (%) | Copper Nickel 70/30 (%) |
|---|---|---|
| Copper (Cu) | 88.6 min | 65.0 – 70.0 |
| Nickel (Ni) + Cobalt (Co) | 9.0 – 11.0 | 29.0 – 33.0 |
| Iron (Fe) | 1.5 max | 0.4 – 1.0 |
| Manganese (Mn) | 1.0 max | 1.0 max |
| Zinc (Zn) | 0.5 max | 1.0 max |
| Lead (Pb) | 0.02 max | 0.02 max |
| Carbon (C) | 0.05 max | 0.05 max |
| Phosphorus (P) | 0.02 max | 0.02 max |
| Sulfur (S) | 0.02 max | 0.02 max |
| Others (Total) | 0.30 max | 0.30 max |
| Remaining Element | Balance Cu | Balance Cu |
Applications of Copper Nickel
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What is the difference between Cu-Ni 70/30 and 90/10?
Can Copper Nickel be used for potable water systems?
Is Copper Nickel suitable for welding?
How does Copper Nickel resist marine biofouling?
