Category » Copper

Copper and copper alloys are used in a wide range of applications.  They are primarily selected due to their excellent electrical and thermal conductivities, resistance to corrosion, ease of fabrication, strength and its fatigue resistance.


Aluminum Bronze A1 Bare

Aluminum Bronze A1 is an iron free alloy used primarily to overlay bearings and wear-resistant surfaces that require a 125 BHN hardness and to resist corrosion, especially from salt water, metal salts and acids in varying concentrations and temperatures. It is not recommended for joining since the deposit has a tendency to be hot short. Applications include, tube sheets, valve seats, pickling hooks, impellers, chemical plants, and pulp mills.

Typical Deposit Analysis
Cu Other Pb Mn Si Al
Rem 0.50 max 0.02 max 0.50 max 0.10 max 6.0 - 8.5
Zn          
0.20 max          
  • Specifications: AWS A5.7 / ASME SFA 5.7
  • Classification: ERCuAl-A1
Typical Deposit Characteristics
Tensile Strength 68000 psi
Yield Strength 28000 psi
Elongation % in 2” 47.0%

Aluminum Bronze A2 Bare

Aluminum Bronze A2 is a very versatile bare wire. It is used for joining aluminum bronze of similar composition, silicon and manganese bronze, high strength copper-zinc alloys, some copper-nickel alloys, ferrous metals and dissimilar metals. Dissimilar applications include aluminum bronze to steel and copper to steel. It is also used for building up or overlaying metal for wear and corrosion resistant surfaces. Aluminum Bronze A2 is most commonly used for marine maintenance and repair welding of ship propellers, pump housings, rigging jacks, piston heads, bearings and many overlay or surfacing applications.

Typical Deposit Analysis
Cu Other Pb Fe Si Al
Rem 0.50 max 0.02 max 0.5 - 1.5 0.10 max 8.5-11.0
Zn          
0.02 max          
  • Specifications: AWS A5.7 / ASME SFA 5.7
  • Classification: ERCuAl-A2
Typical Deposit Characteristics
Tensile Strength 79000 psi
Yield Strength 35000 psi
Elongation % in 2” 28.0%

Aluminum Bronze A2 Coated

Aluminum Bronze A2 is a very versatile electrode. It is used for joining aluminum bronze of similar composition, silicon and manganese bronze, high strength copper-zinc alloys, some copper-nickel alloys, ferrous metals and dissimilar metals. Dissimilar applications include aluminum bronze to steel and copper to steel. It is also used for building up or overlaying metal for wear and corrosion resistant surfaces. Aluminum Bronze A2 is most commonly used for marine maintenance and repair welding of ship propellers, pump housings, rigging jacks, piston heads, bearings and many overlay or surfacing applications.

Typical Deposit Analysis
Cu Other Pb Fe Si Al
Rem 0.50 max 0.02 max 0.5 - 5.0 1.5 max 8.5 - 11.0
  • Specifications: AWS A5.6 / ASME SFA 5.6
  • Classification: ECuAl-A2
Typical Deposit Characteristics
Tensile Strength 77000 psi
Yield Strength 35000 psi
Elongation % in 2” 27.0%

Aluminum Bronze A3 Bare

Aluminum Bronze A3 is a higher strength aluminum bronze used to joining and repair welding of similar compositions. Aluminum Bronze 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.

Typical Deposit Analysis
Cu Other Pb Fe Si Al
Rem 0.50 max 0.02 max 2.0 - 4.5 0.10 max 10.0-11.5
Zn          
0.10 max          
  • Specifications: AWS A5.7 / ASME SFA 5.7
  • Classification: ERCuAl-A3
Typical Deposit Characteristics
Tensile Strength 90000 psi
Yield Strength 40000 psi
Elongation % in 2” 20.0%

Aluminum Bronze A4 Bare

Aluminum Bronze A4 bare wire is a nickel-aluminum bronze alloy used to weld cast and wrought nickel-aluminum bronze. It has excellent resistance to corrosion, erosion, and cavitations in salt or brackish water. Aluminum Bronze A4 applications include, ship fittings, ship propellers, power plant valves, piping systems, intake screens, oil recovery pumps, and propeller gear housings .

Typical Deposit Analysis
Cu Ni Other Pb Fe Mn
Rem 4.0 - 5.5 0.50 max 0.02 max 3.0 - 5.0 0.60-3.50
Si Al Zn      
0.10 max 8.50-9.50 0.10 max      
  • Specifications: AWS A5.7 / ASME SFA 5.7
  • Classification: ERCuNiA1
Typical Deposit Characteristics
Tensile Strength 104000 psi
Yield Strength 59000 psi
Elongation % in 2” 23.0%