Products
ERCuNiAl
AWS:
AWS A5.7
Category:
Description
Chemical components
| Cu | Al | Fe | Mn | Ni | P | Pb | Si | Sn | Zn | Ti | C | S | Other Total |
| Rem | 8.5-9.5 | 3.0-5.0 | 0.60-3.50 | 4.0-5.5 | — | 0.02 | 0.10 | — | 0.10 | — | — | — | 0.50 |
Product Description
ERCuNiAl (Nickel-Aluminum Bronze) is a high-performance copper-aluminum-nickel alloy complying with multiple standards including AWS A5.7 C63280 (equivalent to ISO24373 Cu6328, GB/T9460 SCu6328, BS EN14640 Cu6328, DIN 1733 2.0923). Typical composition: Cu balance, 8.5-9.5% Al, 3.0-5.0% Fe, 0.6-3.5% Mn, 4.0-5.5% Ni. Features excellent strength, hardness, wear resistance, and outstanding seawater corrosion resistance. Suitable for TIG and MIG welding of nickel-aluminum bronze castings and forgings. Inert shielding gas (Ar) is required for welding applications.
Features
▪ High Strength: Tensile strength 450-560 MPa, Brinell hardness 150-170 HB, offering excellent mechanical properties.
▪ Excellent Corrosion Resistance: Outstanding resistance to seawater erosion, cavitation, and atmospheric corrosion.
▪ Good Wear Resistance: High hardness and wear characteristics suitable for demanding mechanical applications.
▪ High Temperature Resistance: Melting range 1015-1045°C with good high-temperature oxidation resistance.
▪ Non-Sparking: Does not produce sparks under impact, suitable for non-sparking tools in hazardous environments.
▪ Good Fabrication Properties: Excellent thermal conductivity, good machinability (20-30% cutting performance), and hot workability at 850-900°C.
Applications
▪ Marine Engineering: Ship propellers, turbine parts, valve bodies, pump components, and piping systems.
▪ Aerospace: Aircraft landing gear bushings, high-strength bearing sleeves, and structural components.
▪ Chemical Industry: Corrosion-resistant valves, pumps, and containers for acidic and alkaline environments.
▪ Tooling and Molds: Die materials for stainless steel forming, stretching, and rolling without sticking or scratching.
▪ Wear Components: Gear blanks, bearing weights, threaded parts, and wear-resistant surfaces.
▪ Dissimilar Metal Joining: Copper alloys to steel, aluminum bronze to carbon steel, and overlay welding on steel.
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
What is the difference between CuAl9Ni5 and CuAl10Fe3?
CuAl9Ni5 contains 4.0-5.5% nickel with higher strength (450-560 MPa) and better seawater corrosion resistance. CuAl10Fe3 has higher aluminum content (9-11% Al) with 3.0-5.0% iron, offering good wear resistance but lower strength. CuAl9Ni5 is preferred for marine applications, while CuAl10Fe3 is suitable for general wear applications.
What shielding gas is recommended for CuAl9Ni5 welding?
Pure argon (Ar) or argon-helium mixtures are recommended for TIG and MIG welding. For large components, preheating to 150-200°C may be necessary to reduce thermal stress.
What is the typical welding temperature for CuAl9Ni5?
Melting range is 1015-1045°C. For TIG/MIG welding, use controlled heat input to avoid overheating. Gas welding is not recommended; if necessary, use a non-oxidizing flame.
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