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
Precision ERCuSi Silicon Bronze Wire for Plumbing and HVAC Welds
Product Details
Our ERCuSi silicon bronze Welding Wire is a top pick for plumbing and HVAC projects. With about 3% silicon and a copper base, this wire delivers strong, corrosion-resistant welds with a smooth, polished finish. It’s designed for TIG and MIG welding, offering excellent arc stability and minimal spatter. Perfect for joining copper, brass, galvanized steel, or dissimilar metals, it’s a versatile choice for creating durable welds in pipes, fittings, and HVAC components. The wire’s low melting point makes it easy to work with, ensuring clean results every time.
We’ve fine-tuned our ERCuSi wire to make plumbing and HVAC welding a breeze. The silicon content boosts fluidity, giving you smooth, even welds with great corrosion resistance, especially in moist or mildly corrosive environments. With tensile strength around 50,000 psi, it’s strong enough for critical applications like water lines or air conditioning systems. The wire’s versatility shines when welding dissimilar metals, like copper to steel, and its golden finish is a bonus for decorative jobs. It’s built for precision and reliability, whether you’re working on a small repair or a large installation.
| 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
The copper-based welding wire market is growing steadily, projected to reach USD 4.5 billion by 2030 with a 5.5% CAGR. Plumbing and HVAC industries are driving demand, needing materials that offer corrosion resistance and reliable performance in wet or humid conditions. Silicon bronze wires like ERCuSi are popular for their affordability and versatility, especially in applications requiring both functionality and aesthetics. As green building standards and energy-efficient HVAC systems gain traction, high-quality welding materials are key to meeting strict performance and safety requirements.
Applications in Plumbing and HVAC
Our ERCuSi wire is a go-to for plumbing and HVAC welding. It’s used for water pipes, fittings, and valves, where corrosion resistance ensures long-lasting, leak-free systems. In HVAC, it’s perfect for joining copper tubing in air conditioning and refrigeration units, delivering strong welds that handle temperature changes and moisture. The wire also works great for brazing brass or galvanized steel, making it a favorite for HVAC repairs and installations. Its attractive bronze finish is ideal for exposed piping in decorative or architectural projects.
Industry Trends
Sustainability is a big focus in plumbing and HVAC, with a push for durable materials that reduce leaks and maintenance. Our ERCuSi wire fits the bill with its corrosion resistance and long-lasting welds. Automation is also trending, with robotic welding systems becoming common in large-scale HVAC manufacturing, and our wire’s consistent feed ensures flawless results. Stricter building codes and environmental regulations are driving demand for reliable, high-performance welding materials, and our wire meets those standards with ease.
Comparison with Other Wires
Here’s how our ERCuSi stacks up against other copper-based welding wires:
Parameter | ERCuSi (Ours) | ERCu | ERCuNi5Fe1 | ERCuAl-A1 |
|---|---|---|---|---|
Composition | ~3% Silicon | Pure copper | ~5% Ni, ~1% Fe | ~6-8% Aluminum |
Corrosion Resistance | Good (Mild environments) | Moderate (General) | Excellent (Seawater) | Excellent (Chemical, cavitation) |
Primary Use | Copper, brass, galvanized steel | Pure copper | Cu-Ni alloys, dissimilar metals | Aluminum bronze, surfacing |
Plumbing/HVAC Suitability | High (Pipes, fittings) | Moderate (Limited corrosion) | Moderate (Overkill for HVAC) | Moderate (Not plumbing-specific) |
Weldability | Excellent (Smooth arc, low spatter) | Good (Higher spatter risk) | Excellent (Stable arc) | Excellent (Smooth arc) |
Tensile Strength (psi) | ~50,000 | ~30,000-40,000 | ~50,000-60,000 | ~60,000-70,000 |
Aesthetic Finish | Excellent (Golden bronze) | Good (Copper tone) | Good (Metallic) | Good (Bronze) |
Cost-Effectiveness | High (Versatile, affordable) | High (For copper) | Moderate (Niche marine use) | High (Specialized applications) |
Our ERCuSi is the ideal choice for plumbing and HVAC, balancing corrosion resistance, aesthetics, and affordability.
Our Company’s Edge
We’re proud of our ERCuSi silicon bronze wire, crafted to meet AWS A5.7 standards with high-purity materials for clean, consistent welds. Our manufacturing process eliminates imperfections, ensuring smooth feeding in both TIG and MIG setups, whether manual or automated. Available in various diameters and spool sizes, it’s tailored to fit your plumbing or HVAC project. Our team’s ready to provide expert guidance, helping you achieve perfect welds for everything from small fittings to large HVAC systems.
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 ERCuSi ideal for plumbing and HVAC?
Its 3% silicon content ensures corrosion-resistant, strong welds for pipes and fittings in moist environments.Can ERCuSi weld dissimilar metals?
Yes, it’s great for joining copper to brass, galvanized steel, or other metals with reliable welds.What industries use ERCuSi wire?
Plumbing, HVAC, automotive, and decorative welding for corrosion-resistant, aesthetic welds.How does ERCuSi compare to ERCuNi5Fe1?
ERCuSi is better for plumbing and HVAC, while ERCuNi5Fe1 excels in seawater corrosion resistance.Is ERCuSi suitable for decorative welding?
Absolutely, its golden bronze finish is perfect for exposed piping and architectural projects.What shielding gas works best with ERCuSi?
Pure argon at 15-20L/min is ideal for TIG welding, ensuring a stable arc and clean welds.Can ERCuSi be used in automated welding?
Yes, its smooth feed and stable arc make it a great fit for robotic welding systems.Why choose ERCuSi over ERCuAl-A1?
ERCuSi offers better affordability and aesthetics for plumbing, while ERCuAl-A1 is suited for wear-resistant surfacing.
Wrapping Up
Our ERCuSi silicon bronze welding wire is a game-changer for plumbing and HVAC welding. Its corrosion resistance, strength, and golden finish make it perfect for pipes, fittings, and HVAC systems. With industry trends favoring sustainability and automation, our wire keeps you ahead of the curve. Choose us for quality, versatility, and welds that last in any plumbing or HVAC project.
- Whatsapp：+86 199 0611 9641
- sales11@dlx-alloy.com
- NO.32 West Taihu Road, Xinbei District, Changzhou, Jiangsu,China