Class: ERCuAl-A1

AWS: A5.7

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

Aluminum Bronze-A1 Mig Welding Process (GMAW)

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
Diameter X Spool Sizes	Diameter X Coil Sizes
.035 x 30#	1/16 x 60#
.045 x 30#	3/32 x 60#
1/16 x 30#	1/8 x 60#

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
MIG	.035 inches	20-26	100-200	100% Argon or 75% Argon, 25% Helium	45-55 CFH
GMAW (DCEP)	.045 inches	22-28	100-200	100% Argon or 75% Argon, 25% Helium	45-55 CFH
	1/16 inches	29-32	250-400	100% Argon or 75% Argon, 25% Helium	45-55 CFH
	3/32 inches	32-34	350-500	100% Argon or 75% Argon, 25% Helium	45-55 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.