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Copper Nickel Welding Rod


Cunimet Alloy International is your trusted partner for high-quality Copper Nickel Welding Rods. As a leading manufacturer, supplier, and exporter in India, we pride ourselves on delivering superior products that meet the stringent demands of various industrial applications. Our Copper Nickel (CuNi) welding rods are engineered for excellence, ensuring optimal performance in both TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas) welding processes.

For more information about our Copper Nickel Welding Rods or to place an order, contact us.

Overview of Copper Nickel Welding Rods

Copper Nickel welding rods are essential for creating robust, corrosion-resistant joints in various industrial applications. Known for their exceptional resistance to seawater corrosion and stress cracking, CuNi welding rods are indispensable in marine and industrial environments.

Types of Copper Nickel Welding Rods

90-10 CuNi Welding Rods:

The 90-10 CuNi welding rods consist of 90% Copper and 10% Nickel, offering excellent resistance to corrosion and erosion, particularly in seawater and saltwater environments. These rods are ideal for applications in:

  • Shipbuilding and repair
  • Offshore oil and gas installations
  • Desalination plants
  • Heat exchangers and condensers
70-30 CuNi Welding Rods:

Comprising 70% Copper and 30% Nickel, the 70-30 CuNi welding rods provide superior strength and corrosion resistance, making them suitable for more demanding applications, including:

  • High-pressure systems in naval vessels
  • Chemical processing equipment
  • Power generation plants
  • Industrial piping systems

CuNi 90/10 and 70/30 Electrode, Welding Rode International Standard Codes:

90-10 CuNi Welding Rods:
  • UNS No.: C70600
  • DIN: 2.0872
  • ISO: CuNi10Fe1Mn
  • BSI: CN102
  • ASME: SB 466
  • ASTM: B466
  • MIL: MIL-T-16420K
  • SAE: J461
  • EEMUA: 144
  • AWS: A5.7 ERCuNi
70-30 CuNi Welding Rods:
  • UNS No.: C71500
  • DIN: 2.0882
  • ISO: CuNi30Mn1Fe
  • BSI: CN107
  • ASME: SB 466
  • ASTM: B466
  • MIL: MIL-T-15005
  • SAE: J461
  • EEMUA: 146
  • AWS: A5.7 ERCuNi

CuNi Welding Rod Specifications Chart:

Welding Process Form Type AWS Spec BS Spec
MMA Flux-coated Cu-30% Ni A5.6 ECuNi In draft
(SMAW) electrodes
65% Ni-Cu A5.11 ENiCu-7 BS EN ISO 14172
E Ni4060
TIG (GTAW) Wire in Cu-30% Ni A5.7 ERCuNi BS EN ISO 24373
MIG (GMAW) straight S Cu 7158
lengths or spools 65% Ni-Cu A5.14 ERNiCu-7 BS EN ISO 18274

S Ni 4060

ERCuNi Welding Techniques: TIG and MIG

At Cunimet Alloy International, our Copper Nickel welding rods are designed for use with both TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas) welding processes. These techniques ensure precise and high-quality welds, essential for maintaining the integrity and performance of the structures.

TIG Welding: Ideal for thinner materials, TIG welding provides clean and accurate welds with excellent control over heat input.

ERCuNi TIG Wire Sizes – 1.6 / 2.0 / 2.4 / 3.2 / 4.0 / 4.8 / 6.4 / 8.0 / 9.5 mm

MIG Welding: Suitable for thicker materials, MIG welding allows for faster welding speeds and is highly efficient for large-scale projects.

ERCuNi MIG Wire Sizes – 0.8 / 0.9 / 1.0 / 1.2 /1.6 / 2.0 mm

Specifications of CuNi Welding Rods

Our Copper Nickel welding rods adhere to stringent industry standards to ensure reliability and performance:

  • Composition: High purity Copper and Nickel
  • Diameter: Available in various diameters to suit different applications
  • Compliance: Meets international standards such as AWS A5.7 and ASME SFA 5.7
  • Packaging: Offered in secure and moisture-resistant packaging to maintain quality during storage and transit

Why Choose Cunimet Alloy International?

At Cunimet Alloy International, we are committed to providing our customers with the highest quality Copper Nickel welding rods. Here’s why you should choose us:

  • Unmatched Quality: Our welding rods are manufactured using the finest raw materials and advanced production techniques to ensure superior quality and performance.
  • Expertise and Experience: With more than a decade of experience in the industry, our team of experts is dedicated to delivering products that meet the highest standards of excellence.
  • Global Reach: As a leading exporter, we have a robust distribution network that ensures timely delivery of our products to customers worldwide.
  • Customer-Centric Approach: We prioritize our customers’ needs and offer personalized solutions to meet their specific requirements.
  • Competitive Pricing: We offer high-quality products at competitive prices, ensuring value for your investment.


Contact us today to discuss your requirements, request a quote, or place an order. Let our expert team help you achieve unparalleled durability and efficiency in your welding projects.

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