Copper Nickel 90/10 Wires – Manufacturer, Supplier & Exporter in Mumbai, India

Copper Nickel 90/10 Wires – Manufacturer, Supplier & Exporter in Mumbai, India

Virami Steel Hub is a leading manufacturer, supplier, stockist, and exporter of premium-quality Copper Nickel 90/10 Wires in Mumbai, India. We specialize in manufacturing corrosion-resistant Cu-Ni 90/10 alloy wires designed for marine, offshore, industrial, and heat exchanger applications. Our wires are produced using high-grade raw materials and advanced processing techniques to ensure consistent quality, durability, and compliance with international standards.

We supply across India and export globally to the USA, Europe, the Middle East, Africa, and Southeast Asia. With strict quality control, ready stock availability, and reliable global logistics, we ensure timely delivery and complete customer satisfaction.

Introduction to Copper Nickel 90/10 Alloy

Copper Nickel 90/10, also known as CuNi 90/10 or C70600, is a copper-based alloy containing approximately:

  • 90% Copper (Cu)
  • 10% Nickel (Ni)
  • Controlled additions of Iron (Fe) and Manganese (Mn)

This alloy is widely recognized for its excellent resistance to seawater corrosion, biofouling, and erosion. Compared to Copper Nickel 70/30, the 90/10 grade offers slightly lower strength but superior formability and cost-effectiveness, making it ideal for moderate seawater flow conditions and general marine applications.

Copper Nickel 90/10 wires are extensively used in shipbuilding, desalination plants, condensers, heat exchangers, offshore platforms, and coastal infrastructure due to their exceptional durability and long service life.

Key Features of Copper Nickel 90/10 Wires

Copper Nickel 90/10 wires provide numerous performance benefits:

  • Excellent resistance to seawater corrosion
  • High resistance to biofouling and marine organism growth
  • Good resistance to stress corrosion cracking
  • Superior ductility and formability
  • Good thermal conductivity
  • Excellent weldability and fabrication properties
  • Long service life in marine environments
  • Low maintenance requirements

These features make CuNi 90/10 wires a reliable and cost-efficient solution for marine and industrial applications.


Chemical Composition of Copper Nickel 90/10 (%)

The typical chemical composition includes:

Element Composition (%)
Copper (Cu) Balance (~86–90%)
Nickel (Ni) 9–11%
Iron (Fe) 1.0–1.8%
Manganese (Mn) 0.5–1.0%
Carbon (C) 0.05% max
Lead (Pb) 0.05% max
Zinc (Zn) 1.0% max

Role of Alloying Elements

  • Copper (Cu): Provides base corrosion resistance and excellent thermal conductivity.
  • Nickel (Ni): Enhances strength and resistance to seawater corrosion.
  • Iron (Fe): Improves resistance to erosion and impingement in flowing seawater.
  • Manganese (Mn): Enhances overall mechanical strength and structural stability.

The balanced composition ensures optimal performance in marine and chloride-rich environments.


Mechanical Properties

  • Tensile Strength: 380 – 550 MPa
  • Yield Strength: 130 – 250 MPa
  • Elongation: 30 – 45%
  • Hardness: 80 – 150 HB
  • Density: 8.9 g/cm³

These properties make the alloy suitable for demanding structural and marine applications where both strength and corrosion resistance are critical.


Physical Properties

  • Melting Range: 1090 – 1145°C
  • Modulus of Elasticity: 140 GPa
  • Thermal Conductivity: 40 W/m·K
  • Electrical Resistivity: 0.34 µΩ·m
  • Coefficient of Thermal Expansion: 17 µm/m°C

The alloy provides good heat transfer performance, making it suitable for condenser and heat exchanger applications.


Corrosion Resistance

Copper Nickel 90/10 wires are highly resistant to:

  • Seawater and saltwater exposure
  • Marine atmospheres
  • Brine and desalination environments
  • Biofouling and algae growth
  • Pitting and crevice corrosion
  • Stress corrosion cracking

The alloy forms a protective oxide layer that prevents further corrosion, ensuring long-term durability. It performs exceptionally well in moderate seawater velocity systems such as:

  • Ship hulls
  • Seawater piping
  • Cooling systems
  • Condenser tubes

Heat Treatment & Fabrication

Copper Nickel 90/10 is not heat treatable for strengthening but can be strengthened by cold working.

Annealing Process:

  • Temperature Range: 600 – 850°C
  • Cooling: Air cooling

Annealing restores ductility and relieves internal stresses after fabrication.

The alloy is easy to:

  • Bend
  • Form
  • Draw
  • Fabricate

This makes it ideal for wire manufacturing and custom industrial applications.


Weldability

Copper Nickel 90/10 wires offer excellent weldability using:

  • TIG (GTAW)
  • MIG (GMAW)
  • Shielded Metal Arc Welding

Welding recommendations:

  • Use matching filler metals (ERNiCu-7 or equivalent)
  • Ensure clean welding surfaces
  • Avoid contamination during welding

Proper welding preserves corrosion resistance and structural integrity.


Machinability

Copper Nickel 90/10 has moderate machinability.

Recommended practices:

  • Use sharp cutting tools
  • Moderate cutting speeds
  • Proper lubrication
  • Avoid overheating

Proper machining ensures dimensional accuracy and improved surface finish.


Standards & Specifications

We supply Copper Nickel 90/10 wires in compliance with:

  • ASTM B206
  • ASTM B151
  • ASME SB206

Available Size :

  • Wire Diameter: 0.5 mm to 25 mm
  • Coil Weight: 1 kg to 500 kg
  • Straight lengths as per client requirement

Surface Finishes:

  • Bright
  • Annealed
  • Polished
  • Cold Drawn

Custom specifications available upon request.


Applications of Copper Nickel 90/10 Wires

Marine Industry

  • Shipbuilding components
  • Seawater piping systems
  • Boat hull sheathing
  • Marine fasteners

Heat Exchangers & Condensers

  • Condenser tubes
  • Cooling coils
  • Desalination plant components

Offshore & Oil Industry

  • Seawater handling systems
  • Offshore platform equipment

Power Plants

  • Cooling water systems
  • Heat exchanger assemblies

Industrial Applications

  • Pressure vessels
  • Chemical process equipment
  • Corrosion-resistant connectors

Copper Nickel 90/10 wires are widely used in applications where moderate strength and superior seawater corrosion resistance are required.


Quality Testing & Inspection

At Virami Steel Hub, all Copper Nickel 90/10 wires undergo comprehensive quality checks:

  • Chemical composition analysis
  • Mechanical and tensile testing
  • Hardness testing
  • Surface and dimensional inspection
  • Positive Material Identification (PMI)

Mill Test Certificates (MTC) are provided as per ASTM and ASME standards. Third-party inspections are available upon request.


Packaging & Delivery

We ensure safe packaging and global delivery:

  • Moisture-proof protective wrapping
  • Coil or straight length supply
  • Export-grade wooden boxes or pallets
  • Proper labeling for traceability

Our efficient logistics network ensures timely domestic and international delivery.


Why Choose Virami Steel Hub?

  • Trusted manufacturer and exporter in Mumbai, India
  • Extensive ready-stock inventory
  • Competitive pricing
  • Custom manufacturing capability
  • International quality compliance
  • Reliable global shipping
  • Strong commitment to customer satisfaction

Conclusion

Copper Nickel 90/10 wires are corrosion-resistant, durable, and cost-effective alloy wires widely used in marine, offshore, and industrial environments. With excellent resistance to seawater corrosion, biofouling, and stress corrosion cracking, they provide long service life and dependable performance.

Virami Steel Hub supplies certified Copper Nickel 90/10 wires designed for reliability, precision, and compliance with international standards. Our commitment to quality and global service makes us a preferred supplier for marine and industrial projects worldwide.

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