ARCCAPTAIN 2% Lanthanated Blue TIG Tungsten Electrodes, 1/8 in, 10-pack

These ARCCAPTAIN tungsten electrodes are consumable parts for TIG welding. The pack holds ten blue-tipped 2% lanthanated electrodes, each 1/8 inch (3.2 mm) thick and 7 inches (175 mm) long. They fit TIG torches that are set up for that diameter, and they are used mainly for DC welding.

What a TIG electrode does

In TIG welding, the tungsten electrode carries the current and holds the arc, but it isn't meant to melt into the joint. Filler rod is added separately. Tungsten has an extremely high melting point, which is why it can sustain an arc without being consumed quickly. Over time it still wears, gets contaminated if it touches the puddle, and has to be reground or replaced.

What "2% lanthanated" means

Pure tungsten is often alloyed with a small amount of a rare-earth oxide to improve arc starting and stability. Lanthanated electrodes contain lanthanum oxide, and the 2% grade is identified by a blue colour band. The listing gives the classification as WL20 / EWLa-2. ARCCAPTAIN says the electrodes follow AWS A5.12M/A5.12:2009 and DIN EN 26848 and GB/T 31908, and that it offers 100% traceability.

The performance claims

ARCCAPTAIN says the electrodes resist thermal shock, which gives fast arc striking and a low burn-off rate, and that they don't split under heavy amperage, even on thick aluminum plate. It also says they have good electrical conductivity and perform consistently at high current on DC. Lanthanated tungsten is generally regarded as a versatile choice that handles both AC and DC, though the brand positions this pack for DC applications.

Materials it is listed for

The listing names copper alloys, nickel alloys, titanium alloys and stainless steel. It describes the electrodes as suitable for beginner, intermediate and professional TIG welders. Check your welding machine's manual for the electrode type and polarity it recommends for each metal.

Size and packaging

The electrodes are 1/8 inch by 7 inches. That diameter suits higher-amperage work, and smaller diameters are typically used for thin material and low current. Make sure your torch collet, collet body and cup match the 1/8 inch size, since these are sized to the electrode. ARCCAPTAIN says the pack is vacuum sealed to prevent oxidation and allow long storage.

Who it suits

They suit TIG welders who use 1/8 inch tungsten and want a pack of spares, from hobby shops to fabrication benches. People who already stock a different type, such as thoriated or ceriated tungsten, should note that colour bands identify each type.

What to check before you buy

• Torch parts: confirm your collet, collet body and back cap accept 1/8 inch (3.2 mm) electrodes.
• Current range: confirm that this diameter suits your amperage; thin work usually calls for smaller electrodes.
• Polarity: the brand lists DC use, so check your machine settings and manual.
• Grinding: follow good practice and the manufacturer's guidance when sharpening, with proper dust control and eye protection.
• Storage: keep the electrodes clean and identified by colour band.
• Quantity: the pack contains ten 7-inch electrodes.

The short version

• A 10-pack of 2% lanthanated (WL20 / EWLa-2) blue-band tungsten electrodes.
• 1/8 inch by 7 inch (3.2 x 175 mm).
• Listed for DC TIG welding of stainless steel, copper, nickel and titanium alloys.
• Sold as meeting AWS A5.12M/A5.12:2009 and DIN EN 26848, with traceability.
• Vacuum packed to limit oxidation.

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