Wuxi Nickel Alloy New Material Technology Co., Ltd
Wuxi Nickel Alloy New Material Technology Co., Ltd
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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.
| 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 | ||
| Elongation: ≥30% | ||
| Physical Parameters | Density: 8.9 g/cm³ | ISO 5447 |
| Melting Range: 1,150–1,220°C | ||
| Thermal Conductivity: 29 W/m·K |
Marine Engineering: Seawater piping, ship hulls, and offshore platform heat exchangers.
Chemical Processing: Sulfuric acid storage tanks, phosphoric acid reactors, and condenser tubes.
Power Generation: Feedwater heaters, turbine blades, and geothermal cooling systems.
Desalination Plants: Evaporator tubes and brine preheaters in high-salinity environments.
Oil & Gas: Subsea pipelines, LNG liquefaction systems, and refinery heat recovery units.
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.
ERCuNi Copper-Nickel Welding Wire – Marine-Grade Biofouling Resistance (115 chars)
High-Thermal ERCuNi Alloy Wire – Sulfuric Acid & Seawater Durability (116 chars)
Cryogenic ERCuNi Welding Wire – LNG & Desalination System Solutions (113 chars)
SEO & Regional Strategy
Keyword Localization: Terms like “biofouling resistance” (SE Asia), “LNG systems” (Middle East), and “geothermal cooling” (Europe/NA) align with regional industrial priorities.
Technical Compliance: Highlight AWS/ASME certifications and NORSOK compliance to appeal to engineers in regulated sectors.
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.