ERCuAl-A1

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.