Silicon Bronze Welding Wire (ERCuSi‑A)
Premium Copper Alloy MIG & TIG Wire for Reliable Joints
Our silicon bronze welding wire, classified as ERCuSi‑A under AWS A5.7, is a copper‑based alloy containing approximately 3% silicon. This composition offers excellent fluidity, good corrosion resistance, and strong joints when welding copper, brass, bronze, and certain steel combinations. It is widely chosen for MIG (GMAW) and TIG (GTAW) applications in plumbing, architecture, marine hardware, and chemical equipment.
Product Overview
Silicon bronze welding wire is designed for operators who need stable arc performance and clean bead appearance. With its moderate strength and good ductility, ERCuSi‑A is often selected for dissimilar metal welding where control of cracking and distortion is important. The wire feeds smoothly through standard MIG torches and produces consistent deposits with proper shielding gas.
Key Features
Stable Arc & Low Spatter: Engineered for smooth transfer and reduced post‑weld cleaning.
Good Corrosion Resistance: Suitable for mildly corrosive environments, including fresh water and industrial atmospheres.
Versatile Metal Joining: Works well on copper alloys, mild steel, and cast iron when appropriate procedures are followed.
Excellent Workability: Ductile deposits that can be bent, formed, or machined as needed.
Clean Surface Finish: Produced with strict drawing and cleaning processes to minimize inclusions and ensure uniform wire diameter.
Typical Applications
Architectural metalwork and decorative bronze/copper assemblies
Plumbing and potable water systems (copper to brass/steel)
Marine hardware and shipbuilding auxiliary structures
Chemical plant piping and storage tanks (non‑critical service)
Repair and maintenance of cast iron or bronze components
Why Choose Our ERCuSi‑A Welding Wire?
Consistent Manufacturing in Hebei, China
Our production facility in Hebei Province follows strict process controls to maintain dimensional accuracy, smooth cast and helix, and reliable layer winding. Each spool is inspected to help ensure stable feeding and repeatable welding performance.
On‑Time Shipment from Hebei
We understand delivery schedules matter. Orders are processed efficiently at our Hebei warehouse and shipped through major ports near Hebei, helping you keep project timelines on track.
Commitment to Every Order
Whether you need a single pallet or container‑scale quantities, we treat every commitment seriously. Our team monitors order status from production to loading, aiming to deliver as promised.
Responsive Customer Support
From alloy selection to packaging options, our staff provides timely replies and practical suggestions based on your welding requirements. We focus on clear communication and long‑term cooperation rather than one‑time transactions.
Technical Reference (Typical Values)
AWS Classification: A5.7 ERCuSi‑A
UNS Number: C65100
Diameter Options: 0.8 mm / 1.0 mm / 1.2 mm / 1.6 mm
Spool Types: 15 kg (other packing available upon request)
Shielding Gas (MIG): Argon or Argon‑Helium mixtures
Tensile Strength: ~ 350–450 MPa (depends on joint design and base metal)
Packaging & Delivery
Standard export spools with moisture‑resistant wrapping, palletized for safe container shipping. We offer flexible lead times and support both LCL and FCL shipments from Hebei‑area ports.
Inquiry & Support
If you are looking for a dependable source of silicon bronze welding wire (ERCuSi‑A) backed by attentive service and steady delivery from China, feel free to contact us for specifications, samples, or a tailored quotation.