Page 132 - ProStar Product Guide

FILLER METALS

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ProStar Aluminum MIG/TIG Wire & Rod

ProStar Aluminum Welding Wire

Alloy 4043 welding wire is designed for welding 6xxx,
2xxx, and 3xxx series aluminum alloys. It has a lower
melting point than 5xxx alloys and increased silicon
content making it preferable to welders for its fluidity,
weldability, reduce sensitivity to cracking and resultant
bright surface finish.
Alloy 5356 welding wire has good feed-ability when
used as a MIG electrode wire. It is designed to weld
5xxx and 6xxx materials. It is not suitable for service
temperatures exceeding 150 degrees Fahrenheit.
Alloy 5356 is the better choice for materials which will
be anodized after welding as 4043 turns black when
anodized.

DESIGNATION SYSTEM FOR ALUMINUM ALLOYS

Alloy Series Principle Alloying Element
4XXX Silicon
5XXX Magnesium
ER4043

Electrode or rod
Principle alloying element(s)
If different from zero, denotes
modification to the original alloy
Identifying number for specific alloy

RECOMMENDED SELECTION GUIDELINES

Aluminum Recommended Recommended Recommended
Metal Thickness Shielding Gas Wire Type Wire Diameter
Gas Metal Arc Welding (GMAW/MIG)
24 gauge to 3/8" Argon ProStar 4043 0.035 – 1/16"
®
HeliStar A-25 ProStar 5356
18 gauge to 3/16" Argon ProStar 4043 0.030 – 1/16"
HeliStar A-25 ProStar 5356
Gas Tungsten Arc Welding (GTAW/TIG)
18 to 12 gauge Argon ProStar 4043 1/16 – 3/32"
HeliStar A-25 ProStar 5356
18 to 10 gauge Argon ProStar 4043 1/16 – 1/8"
HeliStar A-25 ProStar 5356
18 to 7 gauge Argon ProStar 4043 1/16 – 3/16"
HeliStar A-25 ProStar 5356

C32 1-800 225 8247 www.praxairwelding.com