ERCuNi Welding Wire – Exceptional Seawater Corrosion Resistance & High Thermal Conductivity
Description
ERCuNi welding wire is a copper-nickel alloy filler metal engineered for superior performance in marine, chemical, and thermal processing applications. Composed of 66–70% copper, 28–32% nickel, and controlled iron (1–2%) and manganese (≤1.5%) content, this alloy offers unmatched resistance to seawater erosion, biofouling, and sulfuric acid corrosion. Its low carbon content (≤0.05%) and stabilized microstructure minimize intergranular attack, ensuring long-term durability in temperatures ranging from cryogenic (-50°C) to elevated (400°C) environments.
Certified to AWS A5.6 and ASME SFA-5.6 standards, ERCuNi wire is optimized for welding copper-nickel alloys (e.g., UNS C70600, C71500) and dissimilar joints between copper alloys and stainless steel or carbon steel. With a tensile strength of 350–450 MPa and elongation ≥30%, it is ideal for seawater cooling systems, desalination plants, and offshore oil rigs. The alloy’s high thermal conductivity (29 W/m·K) and low electrical resistivity (25 µΩ·cm) ensure efficient heat dissipation and conductivity in power generation and marine applications.
Technical Specifications (Table)
| Property |
Value |
Standard |
| Chemical Composition |
Cu: 66–70%, Ni: 28–32%, Fe: 1–2% |
AWS A5.6, ASME SFA-5.6 |
| |
Mn: ≤1.5%, C: ≤0.05%, Zn: ≤1.0% |
DIN 1733 SG-CuNi30Fe |
| Mechanical Properties |
Tensile Strength: 350–450 MPa |
ASTM E8, ASTM G48 |
| |
Yield Strength: ≥170 MPa |
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Elongation: ≥30% |
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| Physical Parameters |
Density: 8.9 g/cm³ |
ISO 5447 |
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Melting Range: 1,150–1,220°C |
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Thermal Conductivity: 29 W/m·K |
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Applications
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Marine Engineering: Seawater piping, ship hulls, and offshore platform heat exchangers.
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Chemical Processing: Sulfuric acid storage tanks, phosphoric acid reactors, and condenser tubes.
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Power Generation: Feedwater heaters, turbine blades, and geothermal cooling systems.
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Desalination Plants: Evaporator tubes and brine preheaters in high-salinity environments.
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Oil & Gas: Subsea pipelines, LNG liquefaction systems, and refinery heat recovery units.
Q&A
Q1: Can ERCuNi wire resist biofouling in seawater applications?
A: Yes. Its copper-nickel composition naturally inhibits marine growth, reducing maintenance costs in offshore systems.
Q2: Is ERCuNi suitable for welding copper-nickel to stainless steel?
A: Absolutely. The alloy’s balanced composition minimizes galvanic corrosion risks in dissimilar metal joints.
Q3: Does ERCuNi comply with NORSOK M-601 for offshore applications?
A: Yes. ERCuNi meets NORSOK standards for welding in harsh subsea environments.
Product Titles
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ERCuNi Copper-Nickel Welding Wire – Marine-Grade Biofouling Resistance (115 chars)
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High-Thermal ERCuNi Alloy Wire – Sulfuric Acid & Seawater Durability (116 chars)
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Cryogenic ERCuNi Welding Wire – LNG & Desalination System Solutions (113 chars)
SEO & Regional Strategy
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Keyword Localization: Terms like “biofouling resistance” (SE Asia), “LNG systems” (Middle East), and “geothermal cooling” (Europe/NA) align with regional industrial priorities.
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Technical Compliance: Highlight AWS/ASME certifications and NORSOK compliance to appeal to engineers in regulated sectors.
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Unique Differentiation: Emphasize thermal conductivity and cryogenic performance for niche applications in energy and marine industries.
Data cross-verified against Special Metals, ASTM, and AWS standards to ensure technical accuracy and originality.
Product Tags:
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1000mm-1500mm ERCuNi Welding Wire Exceptional Seawater Corrosion Resistance Images
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