PowerWeld ZIR18-EA 1/8″ x 7″ 1% Zirconiated Brown Tungsten Electrode (EWZr-1)

The PowerWeld ZIR18 1/8″ x 7″ 1% zirconiated brown tungsten electrode is designed for AC TIG welding on thicker aluminum and magnesium where weld cleanliness and consistent arc behavior are important. With a 1/8″ diameter, this TIG tungsten handles higher amperage than smaller sizes, making it suitable for heavier plate, castings, and structural aluminum sections. Classified as EWZr-1, it uses a zirconium oxide blend that helps reduce tungsten contamination in the weld pool and allows the electrode to maintain a stable balled end under AC current. This gives welders a smooth, predictable arc with good puddle control on demanding non-ferrous joints.

Built specifically for AC operation, the ZIR18 performs well with both transformer-style and modern AC inverter TIG machines used for aluminum TIG welding. The 7″ (175 mm) length fits standard TIG torches and most tungsten grinders, while the brown color at the tip clearly identifies it as zirconiated tungsten in a mixed rack of electrodes. When jobs involve thicker aluminum plate, structural extrusions, or larger cast components, the 1/8″ diameter offers the amperage capacity needed to achieve proper penetration and travel speed. Sold individually, this EWZr-1 tungsten electrode can be purchased one at a time or ordered in groups of (10) electrodes to build a full PowerWeld pack for busy fabrication shops and maintenance crews.

PowerWeld 1/8″ x 7″ 1% Zirconiated Brown Tungsten Electrode At a Glance

• EWZr-1 Zirconiated Tungsten: Formulated to help limit tungsten contamination in AC aluminum welds.
• 1/8″ Diameter: Handles higher amperage for thicker aluminum and magnesium sections.
• 7″ (175 mm) Length: Standard length compatible with most TIG torches and tungsten grinders.
• Brown Tip Color Coding: Quickly identifies zirconiated tungsten in mixed storage.
• AC Operation: Designed for alternating current, retaining a controlled balled end while welding.
• Clean Weld Support: Preferred where weld quality, appearance, and low inclusion risk are priorities.
• Non-Ferrous Focus: Optimized specifically for aluminum and magnesium TIG welding.
• Sales Unit: Each; order (10) electrodes for a full PowerWeld pack.

Markets

• Aluminum Fabrication and Repair Shops Used for AC TIG welding on thicker aluminum plate, extrusions, and heavy weldments.
• Marine and Trailer Manufacturing Suitable for boat hull components, ramps, loading decks, and heavy trailer frames.
• Aerospace and Aviation Maintenance Helpful on structural aluminum and magnesium repairs where weld purity matters.
• Automotive, Truck, and Motorsport Fabrication Applied to thicker aluminum brackets, crossmembers, and structural parts.
• Manufacturing and Process Equipment Used on aluminum tanks, platforms, guards, and machine frames.
• Municipal and Facility Maintenance Practical for AC TIG repairs on heavy aluminum railings, structures, and infrastructure.
• Trade Schools and Advanced Welding Programs Good choice for teaching high-amp AC aluminum TIG techniques.

Aluminum fabricators, industrial plants, and welding programs rely on the PowerWeld ZIR18 when their work involves thicker non-ferrous material that demands strong AC TIG performance. The 1/8″ diameter gives welders the amperage capacity needed for full-penetration welds on plate, heavy extrusions, and larger castings while still keeping the arc smooth and controllable. In fabrication bays, crews appreciate that zirconiated tungsten is engineered to resist tungsten contamination of the weld pool, which is important on structural components, tanks, and visible assemblies.

Maintenance teams and advanced students see similar benefits. On plant repairs or training projects, a stable balled tip and predictable AC arc help welders manage heat input and maintain consistent bead shape from root to cap. Having a dedicated 1/8″ zirconiated tungsten electrode for high-amp aluminum TIG work also simplifies machine setup and electrode selection across multiple stations. For operations that frequently weld heavier aluminum and magnesium, the PowerWeld ZIR18 provides a dependable, work-focused solution.

PowerWeld ZIR18-EA 1/8″ x 7″ 1% Zirconiated Brown Tungsten Electrode (EWZr-1) Features

• Reduced Tungsten Contamination: Zirconium blend helps minimize tungsten inclusions in critical aluminum welds.
• Stable Balled Tip on AC: Retains a controlled balled end for smooth arc behavior and even heat spread.
• High-Amperage Capability: 1/8″ size supports the current needed for thicker aluminum plate and structural welds.
• Consistent Arc Characteristics: Provides steady AC arc performance for better puddle control and bead appearance.
• Non-Ferrous Optimization: Intended specifically for aluminum and magnesium TIG welding, not general steel work.
• Brown Identification Band: Standard color code allows quick identification as zirconiated tungsten.

PowerWeld ZIR18-EA 1/8″ x 7″ 1% Zirconiated Brown Tungsten Electrode (EWZr-1) Includes

• (1) 1/8″ x 7″ 1% Zirconiated Brown TIG Welding Tungsten Electrode (EWZr-1)
• Order (10) pieces for a full PowerWeld pack.

PowerWeld ZIR18-EA 1/8″ x 7″ 1% Zirconiated Brown Tungsten Electrode (EWZr-1) Specifications

• Brand: PowerWeld
• Model / MFG Part #: ZIR18
• Product Type: TIG Welding Tungsten Electrode
• Electrode Classification: EWZr-1 (1% Zirconiated)
• Diameter: 1/8″ (3.2 mm)
• Length: 7″ (175 mm)
• Composition: Approx. 99.0% Tungsten, 0.15%–0.5% Zirconium, 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: 775709997196

Why Customers Choose the PowerWeld 1/8″ x 7″ 1% Zirconiated Brown Tungsten Electrode

Welders choose the PowerWeld ZIR18 when they need a 1/8″ zirconiated tungsten electrode that can handle higher amperage AC aluminum TIG welding without giving up weld cleanliness. The EWZr-1 chemistry is preferred in applications where tungsten inclusions must be kept to a minimum, such as structural aluminum, thick plate joints, and pressure-related components. On AC TIG, this electrode forms and maintains a controlled balled tip that helps keep the arc smooth and predictable while delivering the heat needed for full penetration.

For heavy aluminum fabrication, marine work, and industrial repairs, being able to run a stable, high-amp AC TIG arc with a dedicated zirconiated tungsten simplifies daily operations. Crews can tune their AC balance and amperage knowing the electrode will respond consistently across multiple machines. Advanced students also gain experience with the kind of high-capacity tungsten they are likely to see in real-world aluminum work. When the job calls for strong AC TIG performance on thicker non-ferrous material, the PowerWeld ZIR18 stands out as a practical, reliable 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.