Class: ERCuAl-A1

AWS: A5.7

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

Aluminum Bronze-A1 Tig Welding Process (GTAW)

AWS Chemical Composition Requirements
Cu = Remainder	Zn = 0.20 max
Mn = 0.50 max	Si = 0.10 max
Al = 6.0 – 8.5	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-A1 is an iron free aluminum bronze. Recommended for uses as an overlay material for wear resistant surfaces; it is not recommended for joining applications since the deposit does have a tendency to be hot short.

Deposited Chemical Composition % (Typical)
Dependent on weld process

(Nominal) All Weld Metal Properties Requirements
Tensile Strength	68,000 psi
Yield Strength	28,000 psi
Elongation	47%
Reduction of Area	53%

 

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.