Check the listing for details. ER4043 .035 X 1 lb 10 PK MIG Aluminum Welding Wire Spools Blue Demon. Condition: New. Listed at 93.31 USD. ER4043 .035 1LB SPECIAL 10 PACK DEAL ER4043 is a general-purpose type aluminum welding wire. It is one of the oldest and most widely used welding and brazing alloys. This aluminum alloy contains silicon additives, which result in improved fluidity (wetting action) of the weld pool and also produces a weld less sensitive to cracking. Its bright weld finish makes it a popular choice of welders. ER4043 can be used to weld various grades of aluminum. Applications • Welding filler wire • Spray and flame metallizing wire AWS Specification AWS A5.10/A5.10M:1999(R2007) AWS Classification ER4043 Welding CurrentDCEP Typical Wire Chemistry Si 4.5 - 6.0 Fe 0.8 Cu 0.30 Mn 0.05 Mg 0.05 Zn 0.10 Ti 0.20 OTHER 0.15 AI REM Typical Properties Melting range 1170 - 1605ºF Conductivity 42% IACS ( - O) Density 0.097 lbs/cu in Anodized color Gray Tensile Strength, ksi 29 Welding Positions All positions Available Diameters GMAW and suggested Operating Range in Amps .030" 100 - 120 .035" 110 - 170 3/64" 150 - 190 1/16" 200 - 300 3/32" 320 - 330 Available Diameters GTAW 1/16", 3/32", 1/8", 5/32" & 3/16"