ERCuAl-A3 Aluminum Bronze Welding Wire


Particularly recommended for the joining and overlay welding of copper-aluminum alloys, aluminum coated steel, and cast iron. It has been widely used in shipbuilding, machinery, and the chemical industry.

ERCuAl-A3 Aluminum Bronze Welding Wire

ERCuAl-A3 Aluminum Bronze Welding Wire APPLICATION

ERCuAl-A3 Aluminum Bronze has a higher strength aluminum bronze used to joining and repair welding of similar compositions. Aluminum Bronze ERCuAl-A3 applications include, bearing overlays, hydraulic pistons, impellers, turbine runners, press rams, steel mill rolls, ceiling machine mandrels, breaker blocks, valve seats and parts, mill slippers, and cable sheaves.

Aluminum Bronze ERCuAl-A3,best for the high overlay welding requirement for hardness, resistance to wear, abrasion, and erosion.

Aluminum Bronze A3 contains a higher Iron (Fe) content than Aluminum Bronze A-2. The higher Iron content gives “A-3” greater strength when joining aluminum bronze castings of similar composition. “A-3” is often used for piston overlay and bearing surface applications which require higher strength, while maintaining good ductility.

ERCuAl-A3 Aluminum Bronze Welding Wire Physical and Mechanical Properties

Solids-Temperature 1030℃
Density 7.6kg/dm³
Elongation 20%
Liquids-Temperature 1045℃
Tensile Strength 621N/mm²
Brinell Hardness 166HB

ERCuAl-A3 Aluminum Bronze Welding Wire PACKING

MIG Diameter 0.8 – 2.0mm Packaging D100mm D200mm


Weight 1kg/5kg/12.5kg/13.6kg/15kg
0.030″-5/64″ 2lb/10lb/27lb/ 30lb/33lb
TIG Diameter 1.6 – 6.4mm Length 457mm / 914mm Packaging 5kg/box 25kg/box

10kg/plastic package

1/16″ – 1/4″ 18″ / 36″ 10lb/box 50lb/box

10kg/plastic package

ERCuAl-A3 Aluminum Bronze Welding Wire CHEMICAL COMPOSITION(%)

Standard ISO24373 GB/T9460 BS EN14640 AWS A5.7
Class Cu6240 SCu6240 Cu6240 C62400
Alloy CuAl11Fe3 CuAl11Fe3 CuAl11Fe ERCuAl-A3
Cu bal. bal. bal. bal.
Al 10.0-11.5 10.0-11.5 10.0-11.5 10.0-11.5
Fe 2.0-4.5 2.0-4.5 2.0-4.5 2.0-4.5
Pb 0.02 max 0.02 0.02 0.02
Si 0.1 max 0.1 0.1
Zn 0.1 max 0.1 0.1 0.1
other 0.5 max 0.5 0.5 0.5


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