GTW E4043 Electrode | 3/32", 5/32", 1/8" x 14" x 1lb

E4043 Aluminum Stick Electrodes – Consistent Performance for Any Aluminum Welding Job

When welding aluminum, performance and reliability are non-negotiable. E4043 Aluminum Electrodes are engineered for welders who demand smooth arc stability, clean bead appearance, and minimal post-weld cleanup, whether in the shop or the field.

Key Benefits:

• Welds a Wide Range of Aluminum Alloys
  Perfect for joining aluminum with copper, silicon, and manganese alloys, or when dealing with dissimilar aluminum grades.

• Smooth Arc & Clean Finish
  Produces a stable arc with low spatter and excellent wetting action, resulting in a uniform bead with minimal slag.

• High-Quality Welds
  Delivers dense, porosity-free welds with strong fusion, even on cast aluminum parts or heat-treated sections.

• Brazing Versatility
  In addition to traditional welding, these electrodes can also be used in select brazing applications.

Typical Mechanical Properties:

• Tensile Strength: 14,000–32,000 psi

• Yield Strength: Approx. 20,000 psi

• Elongation in 2": 18%

• Welding Position: All positions

• Polarity: DCEP (Direct Current Electrode Positive)

Typical Chemical Composition (%):

• Silicon: 4.5–6.0

• Iron: ≤ 0.80

• Copper: ≤ 0.30

• Manganese: ≤ 0.05

• Magnesium: ≤ 0.05

• Zinc: ≤ 0.10

• Titanium: ≤ 0.20

• Beryllium: ≤ 0.0008

• Aluminum: Balance

• Others: ≤ 0.15 (total)

Recommended Amperage Ranges:

• 3/32" – 50–85 A

• 1/8" – 75–130 A

• 5/32" – 100–165 A

Best For:

• General aluminum fabrication

• Marine and automotive repair

• Aluminum casting repairs

• Light structural work and sheet metal welding

• Maintenance jobs where alloy compatibility is uncertain

Why E4043?

Because not all aluminum rods are created equal. E4043 provides the flexibility, quality, and consistency your aluminum welds demand—especially when results must be reliable and repeatable. Whether you're running production or tackling a tough repair, this electrode delivers.

Ready to Weld

Stock up on E4043 Aluminum Stick Electrodes today and make your next aluminum project cleaner, stronger, and easier. Available in multiple diameters and ready to ship.