PowerWeld PUR18-EA 1/8″ x 7″ Pure Green Tungsten Electrode (EWP)

The PowerWeld PUR18 1/8″ x 7″ pure green tungsten electrode is designed for AC TIG welding on thicker aluminum and magnesium. With a 1/8″ diameter, it offers the amperage capacity needed for plate, castings, and heavier structural sections while still providing a stable AC arc. Classified as EWP, this electrode is made from unalloyed tungsten and is known for good stability when used with alternating current, whether you are running a balanced wave or a continuously high-frequency stabilized AC output.

On AC, pure tungsten naturally forms a clean, balled end, which many welders prefer for aluminum and magnesium welding. That balled tip helps distribute heat evenly across the joint and reduces arc wandering on wider fillet welds and thicker material. The 7″ (175 mm) length fits standard TIG torches and most tungsten grinders, while the green tip color marks it clearly as pure tungsten in your storage rack. Sold individually, the PUR18 is a dependable choice for shops and maintenance crews that stick with traditional pure tungsten electrodes for high-amp AC aluminum TIG work.

PowerWeld 1/8″ x 7″ Pure Green Tungsten Electrode At a Glance

• EWP Pure Tungsten: Unalloyed tungsten electrode for conventional AC TIG welding.
• 1/8″ Diameter: Supports higher amperage for thicker aluminum and magnesium sections.
• 7″ (175 mm) Length: Standard length that suits 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 HF-stabilized AC.
• Clean Balled End: Maintains a balled tip on AC, preferred for many aluminum and magnesium welds.
• Non-Ferrous Focus: Intended specifically for aluminum and magnesium TIG welding.
• Sales Unit: Each – order (10) electrodes for a typical shop pack.

Markets

• Aluminum Fabrication Shops Used for AC TIG welding on thicker aluminum plate, extrusions, and weldments.
• Marine and Trailer Manufacturing Suitable for boat hull components, deck structures, and trailer frames.
• Automotive, Truck, and Motorsport Fabrication Applied to structural aluminum brackets, crossmembers, and heavy panels.
• Aerospace and Aviation Maintenance Used where pure tungsten is specified for certain aluminum and magnesium repairs.
• Manufacturing and Process Equipment Handles aluminum platforms, frames, tanks, and structural details.
• Municipal and Facility Maintenance Practical for AC TIG repairs on heavy aluminum railings, structures, and signage.
• Trade Schools and Advanced TIG Programs Good teaching electrode for higher-amp AC aluminum welding.

Aluminum fabricators and maintenance crews rely on the PowerWeld PUR18 when projects call for heavier aluminum or magnesium sections welded with traditional pure tungsten on AC. The 1/8″ size gives welders the current-carrying capacity they need for full-penetration welds and multi-pass joints, while the balled tip helps spread the arc across wider joints for smoother bead appearance. In shops that prefer EWP electrodes, this makes the PUR18 a straightforward choice for structural aluminum work, heavier brackets, and thicker castings.

Training labs and advanced students also benefit from using this electrode when learning higher-amperage AC aluminum TIG techniques. It clearly shows how pure tungsten behaves at increased heat levels, including how the balled end grows and how the arc responds on different joint types. For operations that want familiar green-tip performance on heavier aluminum and magnesium, the PUR18 provides a simple, reliable option.

PowerWeld PUR18-EA 1/8″ 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 and high-frequency stabilized AC output.
• Clean Balled Tip on AC: Forms and maintains a balled end, preferred for many aluminum and magnesium welds.
• High-Amperage Capability: 1/8″ diameter supports the current needed for thicker plate and structural welds.
• Consistent Arc Behavior: Provides a smooth, predictable AC arc for better puddle management.
• Green Identification Band: Standard color code for pure tungsten for quick recognition.

PowerWeld PUR18-EA 1/8″ x 7″ Pure Green Tungsten Electrode (EWP) Includes

• (1) 1/8″ x 7″ Pure Green TIG Welding Tungsten Electrode (EWP)
• Order (10) pieces for a full PowerWeld pack.

PowerWeld PUR18-EA 1/8″ x 7″ Pure Green Tungsten Electrode (EWP) Specifications

• Brand: PowerWeld
• Model / MFG Part #: PUR18
• Product Type: TIG Welding Tungsten Electrode
• Electrode Classification: EWP (Pure Tungsten)
• Diameter: 1/8″ (3.2 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: 775709995246

Why Customers Choose the PowerWeld 1/8″ x 7″ Pure Green Tungsten Electrode

Welders choose the PowerWeld PUR18 when they want a 1/8″ pure tungsten electrode dedicated to high-amp AC aluminum and magnesium TIG welding. The EWP classification and green tip are familiar in many fabrication and repair shops, and the clean balled end that develops on AC gives a broad, smooth arc that works well on thicker joints. For structural aluminum frames, heavy brackets, and cast components, this electrode supports the heat levels needed while keeping arc behavior predictable.

The 1/8″ size bridges the gap between medium and heavy work, making it a common choice when jobs move beyond thin sheet but do not yet require the very largest tungsten sizes. Training programs use the PUR18 to show students how pure tungsten behaves as amperage increases, preparing them for real-world aluminum welding tasks. When straightforward, traditional AC aluminum TIG performance on thicker material is the goal, the PowerWeld PUR18 is a reliable, easy-to-understand option.

Please Note: Image may differ from the product listing. The image represents the correct electrode type, but the size shown may not match this 1/8″ x 7″ model. Always verify the description and specifications above before ordering to ensure you select the correct tungsten size.