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Danyang Kaixin Alloy Material Co., Ltd.
ERNiCu-7
Product properties:

Product Name: ERNiCu-7 Nickel Alloy Welding Wire

Equivalent Grades: ERNiCu-7 / AWS A5.14 ERNiCu-7 / UNS N06030 / Monel 60 Welding Wire / Nickel-Copper Alloy Welding Material

Material Type: Nickel-Copper Alloy Welding Material

Product Forms: MIG Welding Wire, TIG Welding Rod, Spool Wire, Cut Length Rod, Strip & Customized Welding Products

Manufacturing Process: VIM + Precision Drawing (Vacuum Induction Melting & Cold Drawing Process)

Standards: AWS A5.14 ERNiCu-7, ISO 18274, EN ISO 18274

Certification: ISO9001:2015, ISO45001:2018, ISO14001:2015

Manufacturer: Danyang City Kaixin Alloy Material Co., Ltd.

Email: kaixinalloy@kx-alloy.com

Phone: +86 13776484780

Product Description

ERNiCu-7 is a nickel-copper alloy welding material with excellent corrosion resistance, seawater resistance, good strength, and outstanding weldability. Designed for harsh environments including seawater, salt solutions, reducing acids, and chemical processing media, it delivers reliable welding performance for nickel-copper alloys, dissimilar metals, marine equipment, and industrial applications across marine, chemical, oil & gas, and energy industries.

Properties & Applications

 

ERNiCu-7 Key Features

ERNiCu-7 offers excellent resistance to seawater, salt solutions, reducing acids, and marine corrosion, combined with good weldability, high ductility, stable mechanical properties, superior crack resistance, and reliable performance in nickel-copper alloy welding applications. Designed for demanding environments, ERNiCu-7 provides long-term durability and consistent weld quality for joining Monel alloys, nickel alloys, copper-nickel alloys, and dissimilar metals across marine, chemical processing, oil & gas, and industrial engineering industries.

 

ERNiCu-7 Product Application

ERNiCu-7 (UNS N06030 / AWS A5.14 ERNiCu-7) is a high-performance nickel-copper alloy welding material widely used in industries requiring excellent seawater corrosion resistance, chemical resistance, good weldability, and stable mechanical performance. Designed for harsh service environments, ERNiCu-7 nickel alloy welding wire performs reliably under exposure to seawater, salt solutions, reducing acids, and corrosive industrial media.

Typical ERNiCu-7 applications include:

Marine & Offshore Engineering:Ship components, seawater piping systems, pumps, valves, offshore structures, marine equipment, and corrosion-resistant welded assemblies exposed to seawater and salt environments.

Oil & Gas:Offshore platforms, pipelines, valves, pressure vessels, pumps, and processing equipment requiring resistance to chloride corrosion and harsh marine conditions.

Chemical Processing:Reactors, heat exchangers, process piping, storage tanks, chemical equipment, and components exposed to reducing acids and corrosive chemical environments.

Power Generation:Heat exchangers, condensers, boiler components, cooling systems, and energy equipment requiring reliable nickel-copper alloy welding performance.

Desalination & Environmental Engineering:Seawater desalination plants, seawater circulation systems, pumps, filtration equipment, and environmental processing components.

Shipbuilding & Repair Welding:Marine structures, nickel-copper alloy fabrication, maintenance welding, and repair applications requiring excellent corrosion resistance and weld integrity.

Dissimilar Metal Welding:Joining applications between nickel-copper alloys, copper-nickel alloys, stainless steels, and other metals requiring good compatibility and crack resistance.

Industrial Fabrication:Fabrication and repair of Monel alloys, nickel-based components, corrosion-resistant equipment, and specialized industrial assemblies.

With excellent seawater corrosion resistance, good weldability, high ductility, and long-term durability, ERNiCu-7 nickel alloy welding wire remains a trusted welding solution for marine, chemical processing, oil & gas, energy, and industrial applications worldwide.

 

Kaixin Alloy offers custom alloy compositions, sizes, dimensions, and product specifications according to customer requirements.

ERNiCu-7Composition content
Ni≥62%
Cu:28%~32%
Cr:20%~23%
Mn:2.0%~4.0%
Ti:1.5%~3.0%
Fe≤2.5%
Si≤1.2%
AI≤1.2%
Co≤1%
C≤0.15%
P≤0.02%
S≤0.015%
Vacuum induction furnace
Electroslag remelting
Process requirements
 

ERNiCu-7 Product Forms & Available Sizes

Product Form

Available Sizes

MIG Welding Wire

Diameter: 0.8–1.6 mm

TIG Welding Rod

Diameter: 1.6–6.4 mm

Nickel Alloy Strip

Thickness: 0.05–6 mm Width: 5–350 mm

Spool Welding Wire

Customized Spool Sizes Available

Cut Length Rod

Length: 500–1000 mm

Round Bar

Diameter: 6–300 mm

Billet

Diameter: Up to 600 mm

Forged Bar

Customized Sizes

Sheet & Plate

Customized Sizes

Seamless Tube & Pipe

Customized Sizes

Wire Rod

Customized Sizes

Customized Components

Made to Customer Requirements

 

ERNiCu-7 Mechanical Properties (Typical)

 

Property

Value

Tensile Strength

≥550 MPa

Yield Strength (0.2%)

≥240 MPa

Elongation

≥35%

Hardness

≤25 HRC

Density

8.83 g/cm³

Melting Range

1300–1350°C

 

ERNiCu-7 Physical Properties

 

Property

Value

Density

8.83 g/cm³

Modulus of Elasticity

179 GPa

Thermal Conductivity

21 W/m·K

Electrical Resistivity

0.55 μΩ·m

Specific Heat

427 J/kg·K

Coefficient of Thermal Expansion

14.0 μm/m·°C

Magnetic Property

Non-magnetic (annealed)

 

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Quality Control & Certification
ERNiCu-7 Product Quality Inspection & Third-Party Certification

Kaixin Alloy manufactures ERNiCu-7 Nickel Copper Alloy Welding Wire (AWS A5.14 ERNiCu-7 / UNS N06030 / Monel Welding Material) in compliance with international standards including AWS A5.14, ISO 18274, EN ISO 18274, and EN 10204.

Every production batch is strictly tested for:

Chemical Composition Analysis

PMI (Positive Material Identification) Verification

Tensile Strength & Yield Strength Testing

Elongation Testing

Hardness Testing

Welding Performance Testing

Non-Destructive Testing (NDT)

Final Product Inspection

We provide EN 10204 3.1 Certificates, Mill Test Certificates (MTCs), and complete material traceability to ensure reliable welding performance and long-term service reliability for marine engineering, offshore equipment, seawater systems, oil & gas facilities, chemical processing equipment, power generation systems, shipbuilding applications, and nickel-copper alloy fabrication projects.

ERNiCu-7 Production process