Class: ERCuAl-A2

AWS: A5.7

Conforms to Certification: AWS – 5.7                ASME SFA A5.7

Aluminum Bronze-A2 Tig Welding Process (GTAW)

AWS Chemical Composition Requirements
Cu + Ag = Remainder	Zn = 0.02 max
Fe = 0.5 – 1.5	Si = 0.10 max
Al = 8.5 – 11.0	Pb = 0.02 max
Other = 0.50 max

Available Sizes
.035 x 36
.045 x 36
1/16 x 36
3/32 x 36
1/8 x 36
3/16 x 36
5/32 x 36

Application
ERCuAl-A2 can be used where welds on brass are required to have high tensile strength and must be corrosion resistance. It is an excellent alloy for joining Manganese Bronze castings and other Aluminum Bronze materials, malleable iron, steel and dissimilar metals.

Deposited Chemical Composition % (Typical)
Dependent on weld process

(Nominal) All Weld Metal Properties Requirements
Tensile Strength	79,000 psi
Yield Strength	35,000 psi
Elongation	28%

 

Recommended Welding Parameters
Process	Diameter of Wire	Voltage (V)	Amperage (A)	Gas	Feed
TIG	1/16 inches x 36	–0–	70-120	100% Helium or 100% Argon	40-55 CFH
GTAW	3/32 inches x 36	–0–	120-160	100% Helium or 100% Argon	40-55 CFH
	1/8 inches x 36	–0–	170-230	100% Helium or 100% Argon	40-55 CFH

Preheat / Interpass Recommendations
Preheating copper – base alloys is frequently unnecessary provided section thicknesses are not unusually heavy.
Preheat and Interpass temperatures will vary depending on section thickness, selected weld process and other variables.