Blue Demon ER4043 Aluminum TIG Welding Rod - 36" x 1 lb Tube - General Purpose 4000 Series Aluminum
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Blue Demon ER4043 Aluminum TIG Welding Rod
The Blue Demon ER4043 is a premium general-purpose aluminum TIG welding rod designed for welding 4000 and 6000 series aluminum alloys. Known for its excellent fluidity, low shrinkage, and reduced hot cracking tendency, ER4043 is one of the most widely used aluminum filler alloys in the industry.
Why Choose Blue Demon ER4043?
- Excellent Fluidity: Flows smoothly for clean, consistent welds
- Reduced Hot Cracking: Lower silicon content minimizes cracking risk
- 6000 Series Compatibility: Ideal for 6061, 6063, and other 6000 series alloys
- Good Tensile Strength: Minimum 27,000 lbs tensile strength
- Excellent Ductility: Flexible welds that resist fracture under stress
- All-Position Welding: Suitable for flat, horizontal, vertical, and overhead positions
- Professional Grade: Meets AWS A5.10 specifications
- Clean Weld Bead: Produces bright, aesthetically pleasing welds
Technical Specifications
- AWS Alloy: ER4043
- AWS Class: A5.10
- Length: 36 inches
- Material: Aluminum
- Min Tensile Strength: 27,000 lbs
- Min Yield Strength: 16,000 lbs
- Elongation: 8%
- Process: GTAW/TIG
- Current: AC
- Positions: All
- Package: 1 lb tube
- Dimensions: 37.25"L x 1"W x 1"H
- Country of Origin: India
- Manufacturer: Techniweld USA
- Brand: Blue Demon
Key Features
ER4043 is the go-to filler alloy for general aluminum TIG welding applications. Its high silicon content (4.5–6.0%) provides excellent wetting action and a fluid weld pool, making it easier to work with than higher-strength alloys. The result is a clean, bright weld bead with minimal porosity.
Perfect For
- Automotive and transportation fabrication
- Structural aluminum welding
- Marine applications
- HVAC and refrigeration components
- General manufacturing and repair
Compatible Base Materials
1100, 3003, 3004, 5052, 6061, 6063, 6082, and other 4000/6000 series aluminum alloys.
Industry Applications
Widely used in automotive, aerospace, marine, construction, and general fabrication industries where a reliable, easy-to-use aluminum filler is required.
WARNING: This product can expose you to chemicals including Aluminum and its compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.