Welcome to Jiangsu DZX Factory.
Email:sales11@dlx-alloy.com Mobile/Whatsapp:+86 199 0611 9641
Professional manufacturer of welding wires and spraying wires,over 22 years.
Whatsapp：+8619906119641
Email：sales11@dlx-alloy.com
Add：NO.32 West Taihu Road, Xinbei District, Changzhou, Jiangsu,China
Copper Welding Wire
Oxygen-Free ERCu Wire for High-Performance Electronics Welding
Product Details
Our oxygen-free ERCu Welding Wire is a game-changer for high-performance electronics welding. Made from 98%+ pure copper with minimal oxygen content, this wire ensures clean, conductive welds that keep electrical systems running smoothly. Designed for TIG and MIG welding, it offers a stable arc, low spatter, and smooth bead appearance. It’s perfect for welding copper components in circuit boards, connectors, and busbars, where conductivity and precision are non-negotiable. This wire is your go-to for reliable, high-quality welds in sensitive electronics.
We’ve crafted our ERCu wire to meet the strict demands of electronics manufacturing. Its oxygen-free composition prevents porosity and oxidation, ensuring maximum electrical conductivity—critical for components like wiring and connectors. With tensile strength around 30,000-40,000 psi, it’s strong enough for delicate yet durable welds. The wire’s low impurity levels mean cleaner welds with less rework, saving you time and money. Whether you’re working on small circuits or large electrical systems, this wire delivers precision and performance.
Industry Analysis
The copper welding wire market is booming, expected to hit USD 4.5 billion by 2030 with a 5.5% CAGR. Electronics and electrical industries are driving demand, fueled by the rise of 5G, IoT devices, and renewable energy systems like solar inverters. Oxygen-free copper wires like ERCu are in high demand for their superior conductivity and reliability in high-performance applications. As electronics get smaller and more complex, the need for precise, high-quality welding materials is growing, and our wire is built to keep up.
| AWS Classification | Applications |
| ERNiCr-3 | Used for welding 600, 601, and 800 alloys and dissimilar welding between stainless steel and carbon steel |
| ERNiCrFe-7 | Suitable for welding nickel-chromium-iron alloys under ASTM B163, B166, B167, and B168 standards |
| ERNiCrFe-6 | Designed for welding steel to nickel-chromium-iron alloys, as well as stainless steel to nickel-based alloys |
| ERNiCrCoMo-1 | Used for welding nickel-chromium-cobalt-molybdenum alloys and various high-temperature alloys |
| ERNiCrMo-3 | Suitable for nickel alloy, carbon steel, stainless steel, and low alloy steel welding, primarily used for 625, 601, 802 alloys, and 9% nickel alloys |
| ERNi-CI | Used for welding commercially pure nickel, malleable cast iron, and gray cast iron |
| ERCuNi | Suitable for welding 70/30, 80/20, and 90/10 copper-nickel alloys |
| ERNiCu-7 | Used for welding nickel-copper alloys such as B127, B163, B164, and B165 |
| ERNi-1 | Designed for welding pure nickel castings and forgings, including those under ASTM B160, B161, B162, and B163 standards |
| ERNiFeMn-CI | Suitable for welding nodular cast iron, ductile iron, malleable cast iron, and gray cast iron, as well as their dissimilar welding to stainless steel, carbon steel, low alloy steel, and various nickel alloys |
| ERNiCrMo-4 | Used for welding nickel-chromium-molybdenum alloys, or for welding nickel-chromium-molybdenum alloys to steel and other nickel-based alloys |
| ERNiCrMo-11 | uitable for self-welding nickel-chromium-molybdenum alloys, dissimilar welding with steel and other nickel alloys, and also for cladding applications |
| ERNiCrMo-13 | Used for welding low-carbon nickel-chromium-molybdenum alloys |
| ENiCrMo-3 | Designed for welding nickel-chromium-molybdenum alloys, including 625, 800, 801, 825, and 600 |
| ENiCrFe-3 | Used for welding nickel-chromium-iron alloys and for dissimilar welding with carbon steel |
| ENiCrFe-2 | Suitable for welding austenitic steel, ferritic steel, and high-nickel alloys, also used for 9% nickel alloy welding |
| ENiCu-7 | Primarily used for welding nickel-copper alloys and their dissimilar welding with steel |
| ENiCrFe-7 | Ideal for welding 690 (UNS N06690) nickel-chromium-iron alloys |
| ENiCrMo-4 | Designed for C-276 alloy welding and most nickel-based alloys |
| ENiCrCoMo-1 | Suitable for welding nickel-chromium-cobalt-molybdenum alloys and various high-temperature alloys |
| ERCuNi | Used for welding forged or cast 70/30, 80/20, and 90/10 copper-nickel alloys |
| ENiCrMo-13 | Used for welding low-carbon nickel-chromium-molybdenum alloys |
| ENiCrMo-11 | Used for welding low-carbon nickel-chromium-molybdenum alloys |
| Welding Wire Type | Density (g/cm³) | Melting Point (°C) | Electrical Conductivity (% IACS) | Coefficient of Thermal Expansion (10⁻⁶/°C) | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation at Break (%) |
| Carbon Steel Welding Wire | 7.85 | 1450 | 8-10 | 11.8 | 400-550 | 300-400 | 20-25 |
| Stainless Steel Welding Wire | 7.9 | 1350-1450 | 2-5 | 16-17 | 550-650 | 300-400 | 30-40 |
| Aluminum Welding Wire | 2.7 | 600-660 | >60 | 23.1 | 150-200 | 75-100 | >20 |
| Nickel Alloy Welding Wire | 8.4 | 1350-1400 | 1-2 | 13.1 | 600-800 | 400-600 | 30-40 |
| Welding Rod Type | Coating | Electrical Resistivity (10⁻⁶ Ω·cm) | Hardness (HV) | Heat Resistance (°C) | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation at Break (%) |
| Carbon Steel Welding Rod | Acid coated, alkaline coated | 10-15 | 150-200 | < 450 | 400-550 | 300-400 | 20-25 |
| Stainless Steel Welding Rod | Acid coated, alkaline coated | 60-80 | 200-400 | < 800 | 550-750 | 350-450 | 25-35 |
| Cast Iron Welding Rod | Alkaline coated | 90-120 | 250-450 | 300-600 | 300-500 | 150-300 | 10-20 |
| Nickel Alloy Welding Rod | Alkaline coated | 80-100 | 200-300 | < 1200 | 700-900 | 450-650 | 20-35 |
For more other size details, pls directly contact us
Our ERCu wire shines in electronics welding, from circuit boards to power distribution systems. It’s used for joining copper wiring, connectors, and busbars in telecommunications, automotive electronics, and renewable energy equipment. The wire’s high conductivity makes it ideal for applications where even a tiny loss in efficiency isn’t an option, like in solar panels or electric vehicle charging systems. It’s also great for repairing copper components in industrial electrical systems, ensuring long-lasting, reliable performance.
Industry Trends
The electronics industry is all about efficiency and miniaturization, pushing for materials that support smaller, more powerful devices. Our ERCu wire fits perfectly with its clean, precise welds. Automation is another big trend—robotic welding is taking over in electronics manufacturing, and our wire’s consistent feed and arc stability make it a top choice. Sustainability is also key, with demand for materials that reduce waste and improve energy efficiency. Our oxygen-free wire minimizes defects, cutting down on rework and supporting eco-friendly production.
Comparison with Other Wires
Here’s how our ERCu stacks up against other copper-based welding wires:
Parameter | ERCu (Ours) | ERCuSi-A | ERCuNi5Fe1 | ERCuAl-A1 |
|---|---|---|---|---|
Composition | 98%+ Cu, oxygen-free | ~3% Silicon | ~5% Ni, ~1% Fe | ~6-8% Aluminum |
Conductivity | Excellent (High-purity copper) | Moderate (Silicon reduces) | Moderate (Ni/Fe alloy) | Moderate (Al alloy) |
Primary Use | Pure copper, electronics | Copper, brass, galvanized steel | Cu-Ni alloys, marine | Aluminum bronze, surfacing |
Electronics Suitability | High (High conductivity) | Moderate (Less conductive) | Low (Marine-focused) | Low (Not electronics-specific) |
Weldability | Good (Stable arc, some spatter) | Excellent (Smooth arc) | Excellent (Stable arc) | Excellent (Smooth arc) |
Tensile Strength (psi) | ~30,000-40,000 | ~50,000 | ~50,000-60,000 | ~60,000-70,000 |
Corrosion Resistance | Moderate (General) | Good (Mild environments) | Excellent (Seawater) | Excellent (Chemical, cavitation) |
Cost-Effectiveness | High (For electronics) | High (Versatile) | Moderate (Niche marine use) | High (Specialized applications) |
Our ERCu wire is the best choice for electronics, offering unmatched conductivity and precision.
We’re committed to delivering top-tier ERCu wire that meets AWS A5.7 standards. Our oxygen-free copper is sourced and processed to keep impurities at bay, ensuring clean, conductive welds. We’ve optimized our manufacturing to eliminate kinks or defects, so the wire feeds smoothly in both TIG and MIG setups, manual or automated. Available in multiple diameters and spool sizes, it’s tailored to your electronics project, big or small. Our team’s always ready to offer expert tips to help you get flawless results every time.
About Us:
Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications. We also provide chemical analysis reports for every FeCrAl alloy, NiCr alloy, and other products purchased.
For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.
Client Visits
Building Stronger Partnerships
We support all kinds of testing:
FAQs
What makes ERCu ideal for electronics welding?
Its oxygen-free, high-purity copper ensures maximum conductivity and clean welds for sensitive components.Can ERCu weld other metals besides copper?
It’s best for pure copper but can join copper to brass or bronze with proper technique.What industries use ERCu wire?
Electronics, telecommunications, automotive, and renewable energy for high-conductivity welds.How does ERCu compare to ERCuSi-A?
ERCu offers superior conductivity for electronics, while ERCuSi-A is better for corrosion resistance.Is ERCu suitable for automated welding?
Yes, its consistent feed and stable arc make it great for robotic welding systems.What shielding gas works best with ERCu?
Pure argon at 15-20L/min is ideal for TIG welding to ensure clean, stable welds.Why choose ERCu over ERCuNi5Fe1?
ERCu is optimized for electronics conductivity, while ERCuNi5Fe1 is for seawater corrosion resistance.Can ERCu be used for renewable energy applications?
Absolutely, it’s perfect for welding copper components in solar panels and EV charging systems.
Wrapping Up
Our oxygen-free ERCu welding wire is a must-have for high-performance electronics welding. Its unmatched conductivity and clean welds make it ideal for circuit boards, connectors, and renewable energy systems. With industry trends pushing for efficiency and automation, our wire keeps you at the forefront. Choose us for quality, precision, and welds that power the future of electronics.
- Whatsapp：+86 199 0611 9641
- sales11@dlx-alloy.com
- NO.32 West Taihu Road, Xinbei District, Changzhou, Jiangsu,China