Products
ERCuAl-A1
AWS:
AWS A5.7
Category:
Description
Chemical components
| Cu | Al | Fe | Mn | Ni | P | Pb | Si | Sn | Zn | Ti | C | S | Other Total |
| bal. | 6.0-8.5 | — | 0.50 | — | — | 0.02 | 0.10 | — | 0.20 | — | — | — | 0.50 |
Product Description
ERCuAl-A1 (ECuAl-A1, CuAl8) is a copper-aluminum bronze alloy filler metal complying with AWS A5.7 ERCuAl-A1 standard. Typical composition: approx. 90-92% Cu + 8-10% Al. Features high strength, excellent wear resistance, and superior corrosion resistance. Suitable for welding aluminum bronze, brass, bronze, and dissimilar metal joints (copper-to-steel, copper-to-cast iron, bronze-to-steel). Widely used in marine, chemical, and heavy machinery applications requiring strength and durability.
Features
▪ High Strength: Tensile strength approx. 550-650 MPa, significantly higher than pure copper fillers
▪ Excellent Wear Resistance: Aluminum bronze provides outstanding resistance to abrasion and friction
▪ Superior Corrosion Resistance: Excellent resistance to seawater, chemicals, and atmospheric corrosion
▪ Good Machinability: Can be machined, drilled, and tapped with proper tooling
▪ High Temperature Performance: Suitable for elevated temperature service up to 300°C
Applications
▪ Marine Industry: Ship propellers, pumps, valves, seawater system components
▪ Chemical Processing: Pressure vessels, piping, corrosion-resistant equipment
▪ Heavy Machinery: Bearings, gears, wear plates, machine components
▪ Dissimilar Metals: Copper-to-steel, bronze-to-steel, aluminum bronze-to-steel joints
▪ Maintenance and Repair: Overlay welding on worn components requiring wear resistance
Company Introduction
Hangzhou Lin'an Dayang Welding Materials Co., Ltd., a professional welding materials manufacturer founded in 1995, adheres to the core philosophy of "Innovative R&D, Precision Manufacturing, Meticulous Service".
With over 30 years of industry expertise, we have continuously increased investment in production upgrading and technological R&D, solidifying our reputation as a trusted supplier of industrial welding consumables globally.
Production Capacity & Product Strength
Equipped with multiple advanced automated production lines, we boast an annual output of 5,000 tons of premium welding products.
Our core portfolio covers nickel-based welding wires, stainless steel welding wires, flux-cored welding wires and high-performance specialty electrodes.
Backed by a professional R&D team with multiple patents, we also provide tailored OEM/ODM welding solutions to meet clients’ diverse application needs.
After-sales service process
FAQS
Difference between ERCuAl-A1 and ERCuSi-A?
ERCuAl-A1 is aluminum bronze (8-10% Al), much stronger (550-650 MPa), excellent wear resistance. ERCuSi-A is copper-silicon (3% Si), better fluidity, more economical. Choose ERCuAl-A1 for high-strength wear applications; ERCuSi-A for general copper alloy welding.
Preheat temperature for ERCuAl-A1 welding?
150-300°C depending on thickness. Thin sections (<10mm): 150-200°C; thick sections (>10mm): 200-300°C. Higher preheat reduces cracking risk in restrained joints.
Shielding gas for TIG welding?
Pure argon standard. For thicker sections, argon-helium mix (25-50% He) increases penetration. Flow rate: 12-18 L/min for TIG.
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