PowerWeld CER040-EA .040″ x 7″ 2% Ceriated Grey Tungsten Electrode (EWCe-2)

The PowerWeld CER040 .040″ x 7″ 2% ceriated grey tungsten electrode is designed for low-amperage TIG welding where precise puddle control and smooth starts are important. With its small .040″ diameter, this tungsten is well suited for thin sheet, light-gauge tubing, and detailed work on small parts. Classified as EWCe-2, it uses a 2% cerium blend that provides easy arc starting, improved arc stability, and a reduced rate of vaporization or burn-off compared with pure tungsten. Welders can expect quick, reliable arc ignition, a calm arc cone, and longer intervals between regrinds in day-to-day use.

This 2% ceriated tungsten electrode operates well on both DC and AC inverter TIG machines, either polarity. It performs on carbon steel, stainless steel, nickel alloy, titanium, and aluminum, making it a flexible option for mixed-material shops that work at the lower end of the amperage range. The standard 7″ (175 mm) length fits most TIG torches and tungsten grinders, while the grey color coding at the tip clearly marks it as ceriated tungsten in storage racks and tubes. Sold individually, the CER040 lets you replace a single tungsten or stock up with multiple pieces for your fabrication bay, job trailer, or training lab.

PowerWeld .040″ x 7″ 2% Ceriated Grey Tungsten Electrode At a Glance

• EWCe-2 Ceriated Tungsten: 2% cerium blend supports easy arc starts and steady TIG performance.
• .040″ Diameter: Ideal for low-amp work on thin sheet, light tubing, and fine detail welds.
• 7″ (175 mm) Length: Standard size that fits common TIG torches and grinding fixtures.
• Grey Tip Color Coding: Quickly identifies 2% ceriated tungsten in mixed electrode storage.
• AC and DC Compatible: Operates with alternating current or direct current, either polarity, on TIG machines and AC inverters.
• Reduced Burn-Off Rate: Formulation is designed to slow vaporization and tip loss for better point life.
• Multi-Metal Capability: Suitable for carbon steel, stainless steel, nickel alloy, titanium, and aluminum.
• Sales Unit: Each – order (10) electrodes to build a typical shop pack.

Markets

• Light Welding and Fabrication Shops Used for TIG welding thin stainless and carbon steel components at lower amperage.
• Precision and Instrument Repair Suited for small brackets, thin flanges, and detailed welds on mixed alloys.
• Automotive and Motorsport Fabrication Helpful on thin panels, tabs, and light-wall tubing in TIG setups.
• Manufacturing and Industrial Maintenance Applied to fine repairs on small process parts and light covers or guards.
• Aerospace and Specialty Metal Work Suitable for low-amp TIG welds on titanium and high-nickel alloy components.
• Municipal and Facility Maintenance Practical for delicate TIG repairs on thin stainless or aluminum fixtures.
• Trade Schools and TIG Training Programs Good choice for teaching low-amperage TIG technique with ceriated tungsten.

For welders working on thin material and precision components, the PowerWeld CER040 offers the control and predictable behavior needed at low amperage. Fabrication shops and repair centers appreciate the easy arc starting and improved arc stability that EWCe-2 tungsten provides, especially when welding thin stainless brackets, small carbon steel parts, or light aluminum panels. With the same .040″ ceriated tungsten electrode running on DC for steel one day and AC inverter settings for aluminum the next, crews can keep setups simple and avoid switching tungsten types for every task.

Maintenance teams and instructors also see value in the reduced burn-off rate of 2% ceriated tungsten. Less vaporization at the tip means fewer changes in arc shape during a weld and less time spent regrinding between passes. In a training lab, students can focus on how the puddle behaves rather than constant electrode prep, while still learning how a modern ceriated tungsten responds across different materials and polarities. For anyone who needs reliable low-amp TIG performance on a mix of alloys, the CER040 is a practical, shop-ready option.

PowerWeld CER040-EA .040″ x 7″ 2% Ceriated Grey Tungsten Electrode (EWCe-2) Features

• Easy Arc Starting: Cerium blend supports quick, repeatable arc ignition at low currents.
• Improved Arc Stability: Helps maintain a smooth, focused arc cone for accurate puddle control.
• Reduced Vaporization/Burn-Off: Designed to slow tip loss and keep the point shape more consistent.
• AC/DC Flexibility: Operates on both alternating current and direct current, either polarity, including AC inverters.
• Wide Alloy Compatibility: Performs on carbon steel, stainless steel, nickel alloy, titanium, and aluminum.
• Grey Identification Band: Standard color code that marks the electrode as 2% ceriated tungsten.

PowerWeld CER040-EA .040″ x 7″ 2% Ceriated Grey Tungsten Electrode (EWCe-2) Includes

• (1) .040″ x 7″ 2% Ceriated Grey TIG Welding Tungsten Electrode (EWCe-2)
• Order (10) pieces for a full PowerWeld pack.

PowerWeld CER040-EA .040″ x 7″ 2% Ceriated Grey Tungsten Electrode (EWCe-2) Specifications

• Brand: PowerWeld
• Model / MFG Part #: CER040
• Product Type: TIG Welding Tungsten Electrode
• Electrode Classification: EWCe-2 (2% Ceriated)
• Diameter: .040″ (1.0 mm)
• Length: 7″ (175 mm)
• Composition: Approx. 97.3% Tungsten, 1.8%–2.2% Cerium, 0.5% Other
• Current Types: AC and DC, either polarity
• Recommended Power Sources: DC TIG welders and AC inverter TIG machines
• Recommended Materials: Carbon steel, stainless steel, nickel alloy, titanium, aluminum
• Sales Unit: Each
• Recommended Order Quantity: (10) Electrodes for full pack
• UPC: 775709993297

Why Customers Choose the PowerWeld .040″ x 7″ 2% Ceriated Grey Tungsten Electrode

Welders choose the PowerWeld CER040 when they want a .040″ tungsten that performs reliably at low amperage on both DC and AC inverter TIG settings. The EWCe-2 formulation offers easy arc starts and a steady arc cone, which helps technicians maintain control on thin stainless, carbon steel, and aluminum parts without overheating the base metal. Because this 2% ceriated tungsten electrode works across multiple alloys and polarities, shops can standardize on one small-diameter tungsten type for a wide variety of fine-detail TIG work.

Another reason the CER040 is popular is its reduced burn-off rate. The cerium blend slows tip vaporization, so the sharpened point stays more consistent during tacks and short welds, resulting in fewer interruptions and more uniform bead appearance. Maintenance crews, precision fabricators, and training programs all benefit from an electrode that supports clean, repeatable welds on the thinner materials they handle most often. When precise, low-amp TIG welding is part of the job, the PowerWeld CER040 is a 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.