Copper Nickel Alloys
Copper Nickel Alloys
Copper Nickel Alloys are widely known for their exceptional corrosion resistance, excellent toughness, and superior performance in seawater environments. With a metallurgical blend of copper and nickel—enhanced by controlled additions of iron and manganese—these alloys offer outstanding resistance to biofouling, stress corrosion, and erosion. Their ability to maintain mechanical stability in high-salinity and high-velocity water conditions makes them ideal for marine, offshore, and industrial cooling applications.
As a trusted Supplier and Stockist, Apar Alloys offers a comprehensive range of Copper Nickel Alloys in multiple grades and customized forms to meet diverse industry requirements. Our materials deliver dependable performance in condensers, heat exchangers, desalination units, marine components, and chemical processing systems. Each batch is tested for corrosion resistance, structural integrity, and compliance with international standards. With ready stock, strong global sourcing capabilities, and technical expertise, Apar Alloys provides reliable Copper Nickel solutions for long-term industrial use.
Specifications
| Grade | AISI | UNS | ASTM Standard | EN (W-Nr) | DIN Spec |
|---|---|---|---|---|---|
| Copper Nickel 70/30 | — | C71500 | ASTM B122 / B171 | CW354H | CuNi30Fe1Mn |
| Copper Nickel 90/10 | — | C70600 | ASTM B111 / B466 | CW352H | CuNi10Fe1Mn |
| Copper Nickel 66/30/2 (Marine Grade) | — | — | ASTM B111 (Equivalent) | — | CuNi30Mn2Fe |
| Cupro Nickel C71520 | — | C71520 | ASTM B122 | — | CuNi30Fe1 |
| Cupro Nickel C70610 | — | C70610 | ASTM B466 | — | CuNi10Fe |
What Makes Copper Nickel Alloys Unique
Copper Nickel Alloys offer a rare combination of seawater corrosion resistance, strength, and long-term reliability that few metals can match. Their copper–nickel–iron microstructure ensures superior resistance to pitting, cyclic stress, and erosion caused by fast-flowing seawater. These alloys are preferred in industries requiring stable thermal performance, anti-fouling properties, and durability in the harshest marine or chemical environments.
General Characteristics
Excellent seawater and brine corrosion resistance
Exceptional resistance to biofouling & marine growth
High mechanical strength and toughness
Stable performance in high-temperature & high-velocity flow
Great weldability, formability & fabrication ease
Long-term durability in harsh marine and industrial environments
Chemical Composition (nominal) %
| Grade | Cu | Ni | Fe | Mn | Zn | Pb | Others |
|---|---|---|---|---|---|---|---|
| C71500 (70/30) | Balance | 29–33 | 0.4–1.0 | 0.5–1.0 | ≤0.5 | ≤0.02 | Trace elements |
| C70600 (90/10) | Balance | 9–11 | 1–1.8 | 0.5–1.0 | ≤1.0 | ≤0.02 | Trace elements |
| C71520 | Balance | 29–33 | 0.4–0.7 | 0.5–1.0 | ≤0.5 | ≤0.02 | Trace elements |
| C70610 | Balance | 9–11 | 1–1.8 | 0.5–1.0 | ≤1.0 | ≤0.02 | Trace elements |
Applications
Heat exchangers & condenser systems
Marine hardware, seawater piping & offshore components
Desalination plants & evaporator units
Shipbuilding, propellers, pump components & fasteners
Industrial cooling and brine systems
Fire-fighting & ballast-water piping on ships
Advantages
- Exceptional resistance to seawater corrosion & biofouling
- Superior strength and long-term dimensional stability
- Excellent resistance to stress cracking & erosion
- Ideal for heat-transfer applications
- Low maintenance with long service life
- Reliable weldability and fabrication properties
Mechanical Properties (Typical at Room Temperature)
| Property | Value (Approx.) |
|---|---|
| Tensile Strength | 275 – 450 MPa |
| Yield Strength | 105 – 150 MPa |
| Elongation | 20 – 45% |
| Hardness | 60 – 120 HB |
| Density | ~8.9 g/cm³ |
| Melting Point | 1100–1200°C |
Why Choose Apar Alloys
Reliable Supplier & Stockist
Wide inventory of Copper Nickel Alloys ready for immediate dispatch.
Global Sourcing Network
Materials sourced from internationally certified and approved mills.
Strict Quality Assurance
Alloys undergo chemical, mechanical, and corrosion-resistance testing.
Customized Supply Solutions
Available in custom sizes, finishes, thicknesses, and fabricated forms.
Competitive Pricing & Timely Delivery
Economical solutions with dependable and timely shipment.
Technical Expertise & Support
Professional assistance for material selection and application-based requirements.
Get in Touch
Contact Us
Looking for premium Copper Nickel Alloys for your industrial applications? Contact Apar Alloys for technical details, customized sizes, competitive pricing, and expert support. Our team is ready to supply certified and reliable Copper Nickel materials for your projects.
[Call] +91 98333 89128
301, 3rd floor, A WING, Krishvi Escape, Near Vinay Health Home, Fanaswadi Bhuleshwar, Mumbai - 400002.
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