The PowerWeld PUR040 .040″ x 7″ pure green tungsten electrode is an unalloyed tungsten option for AC TIG welding on thin aluminum and magnesium. With a small .040″ diameter, it is designed for low-amperage work where heat control and a tight, focused arc are critical—such as light-gauge sheet, thin-wall tube, and fine detail welds. Classified as EWP, this electrode offers good arc stability on alternating current, whether you are running balanced wave or a continuously high-frequency stabilized AC output.
Pure tungsten electrodes naturally form a clean, balled end on AC, which is preferred for many aluminum and magnesium TIG applications. That balled tip helps distribute heat smoothly across the joint and reduce the chance of arc wandering on thin material. The 7″ (175 mm) length fits standard TIG torches and most tungsten grinders, while the green color coding at the tip clearly marks it as pure tungsten in your storage rack. Sold individually, the PUR040 is a practical choice when you need precise AC aluminum TIG performance at lower amperage.
PowerWeld .040″ x 7″ Pure Green Tungsten Electrode At a Glance
- EWP Pure Tungsten: Unalloyed tungsten electrode for traditional AC TIG welding.
- .040″ Diameter: Best suited to low-amp work on thin aluminum and magnesium.
- 7″ (175 mm) Length: Standard size for most TIG torches and grinding fixtures.
- Green Tip Color Coding: Identifies the electrode as pure tungsten in mixed storage.
- AC Operation: Designed for alternating current, including balanced wave and high-frequency stabilized AC.
- Clean Balled End: Naturally maintains a balled tip, preferred for many aluminum TIG applications.
- Non-Ferrous Focus: Intended for aluminum and magnesium welding rather than steel.
- Sales Unit: Each – order (10) electrodes to assemble a full shop pack.
Markets
- Aluminum Fabrication Shops Used for light-gauge aluminum sheet, panels, and small weldments on AC TIG.
- Marine and Trailer Manufacturing Suitable for thin aluminum boat parts, dock accessories, and light trailer components.
- Automotive and Motorsport Fabrication Applied to aluminum panels, thin brackets, and light tubing.
- Aerospace and Aviation Maintenance Helpful for specific aluminum and magnesium repairs that call for pure tungsten.
- Manufacturing and Process Equipment Used on light aluminum guards, covers, and enclosures.
- Municipal and Facility Maintenance Practical for AC TIG repairs on thin aluminum railings, signage, and fixtures.
- Trade Schools and TIG Training Programs Ideal for teaching basic AC aluminum TIG techniques with pure tungsten.
Aluminum fabricators, maintenance crews, and training programs choose the PowerWeld PUR040 when they need classic pure tungsten behavior on AC at lower amperage. For thin aluminum sheet and small components, the .040″ size allows welders to keep the puddle small and controlled, helping avoid burn-through and distortion. The clean balled tip that pure tungsten forms under AC gives a smooth arc shape that many technicians prefer when learning or performing traditional aluminum TIG welding.
In real shop conditions, being able to rely on an EWP electrode that responds predictably to common AC TIG settings is useful for both new and experienced welders. Training labs can demonstrate how pure tungsten behaves compared with alloyed electrodes, while light fabrication shops get a straightforward consumable for thin aluminum jobs. When the priority is simple, proven AC aluminum TIG performance at low amperage, the PowerWeld PUR040 provides a sensible option.
PowerWeld PUR040-EA .040″ x 7″ Pure Green Tungsten Electrode (EWP) Features
- Unalloyed Tungsten Construction: EWP classification for traditional AC TIG applications.
- Good AC Arc Stability: Performs well with balanced wave or high-frequency stabilized AC output.
- Clean Balled Tip: Naturally forms and maintains a balled end, preferred for aluminum and magnesium welding.
- Thin-Material Control: .040″ diameter supports low-current welding on light-gauge non-ferrous materials.
- Consistent Arc Behavior: Helps provide a smooth, predictable AC arc for better puddle management.
- Green Identification Band: Standard color code for pure tungsten for quick recognition.
PowerWeld PUR040-EA .040″ x 7″ Pure Green Tungsten Electrode (EWP) Includes
- (1) .040″ x 7″ Pure Green TIG Welding Tungsten Electrode (EWP)
- Order (10) pieces for a full PowerWeld pack.
PowerWeld PUR040-EA .040″ x 7″ Pure Green Tungsten Electrode (EWP) Specifications
- Brand: PowerWeld
- Model / MFG Part #: PUR040
- Product Type: TIG Welding Tungsten Electrode
- Electrode Classification: EWP (Pure Tungsten)
- Diameter: .040″ (1.0 mm)
- Length: 7″ (175 mm)
- Composition: Approx. 99.5% Tungsten, 0.5% Other
- Current Type: AC
- Process: TIG welding
- Recommended Materials: Aluminum, magnesium
- Sales Unit: Each
- Recommended Order Quantity: (10) Electrodes for full pack
- UPC: 775709995222
Why Customers Choose the PowerWeld .040″ x 7″ Pure Green Tungsten Electrode
Welders choose the PowerWeld PUR040 when they want a small-diameter pure tungsten electrode dedicated to AC aluminum and magnesium TIG work. The EWP classification and green tip are familiar to many technicians, and the way pure tungsten forms a balled end gives a smooth, broad arc that works well on thin non-ferrous joints. For simple bracket repairs, aluminum panel work, or training on basic aluminum TIG, this .040″ electrode offers predictable results without extra setup steps.
Because the PUR040 is focused on AC use for aluminum and magnesium, shops often keep it on hand as their “thin aluminum” tungsten. Crews can grab it when jobs call for low-amp AC TIG work and know they are using an electrode suited to that purpose. For welders who prefer traditional pure tungsten on AC, and for schools that want to show how EWP behaves compared to alloyed electrodes, the PowerWeld PUR040 is a straightforward, dependable choice.
Please Note: Image may differ from the product listing. The image represents the correct electrode type, but the size shown may not match this .040″ x 7″ model. Always verify the description and specifications above before ordering to ensure you select the correct tungsten size.
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