What diameter is the Lincoln 2% Lanthanated Premium Tungsten Electrode, 3/32” x 7” KP4721-332 available in, and how do I choose the right size?

TIG filler rod diameter selection: match the rod diameter approximately to the base metal thickness. 1/16 in (1.6 mm) for thin sheet, 3/32 in (2.4 mm) for medium gauge, 1/8 in (3.2 mm) for heavy plate. Using a rod that is too large requires excessive heat to melt the rod and can cause overheating of thin base metal.

What shielding gas should I use with the Lincoln 2% Lanthanated Premium Tungsten Electrode, 3/32” x 7” KP4721-332?

TIG welding shielding gas selection: use pure argon (99.995% purity) for most TIG applications including steel, stainless, aluminum, and titanium. Helium additions (25–75% He/Ar mix) increase heat input and travel speed for heavy section work and aluminum welding where higher deposition is needed. Never use CO2 or mixed gases designed for MIG welding in TIG torches.

What is the AWS classification of the Lincoln 2% Lanthanated Premium Tungsten Electrode, 3/32” x 7” KP4721-332?

TIG filler rods carry an AWS classification (e.g., ER70S-2 for mild steel, ER308L for 304 stainless, ER4043 for aluminum) that specifies the chemical composition and mechanical properties of the deposited weld metal. Always verify the AWS class when writing or qualifying a Welding Procedure Specification (WPS) for code work.

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Lincoln Electric Welding Wire 3/32"

Q: What is the Lincoln 2% Lanthanated Premium Tungsten Electrode, 3/32” x 7” KP4721-332 used for?

TIG (GTAW) filler rods are used in the gas tungsten arc welding process, where the welder manually feeds the rod into the weld pool while maintaining the arc with the torch. TIG welding produces the highest quality, lowest spatter welds and is the process of choice for precision work on stainless, aluminum, titanium, and exotic alloys.

Q: How should I store the Lincoln 2% Lanthanated Premium Tungsten Electrode, 3/32” x 7” KP4721-332 to maintain weld quality?

TIG filler rods are typically sold in 36 in lengths in 1 lb, 5 lb, 10 lb, and 25 lb tubes. Store rods in their original sealed tubes in a dry location. Stainless and nickel alloy rods are particularly moisture-sensitive — exposure to humidity can introduce hydrogen and cause porosity or cracking. Never leave opened rod tubes exposed to damp air.

SKU: KP4721-332

$43.47 ~~$53.00~~

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2% Lanthanated (Blue) Premium Tungsten Electrodes (3/32 x 7 in) offer excellent arc starts and stability while reducing oxide build up, which is ideal for medium to high amperage applications and can be used for both DC and AC currents.

Overview

Lincoln 2% Lanthanated Premium Tungsten Electrode, 3/32” x 7” KP4721-332

The Lincoln 2% Lanthanated (Blue) Premium Tungsten Electrodes offer excellent arc starts and stability while reducing oxide build up. The engineered 2% Lanthanated composition is recommended for medium to high amperage applications and can be used for both DC and AC currents.

Features

2% Lanthanated (EWLa-2 / Blue) tungsten is ideal for medium to high amperage applications which use a DC or AC currents
Premium and consistent composition for excellent arc starts and stabilty
3/32" electrode diameter should used with amperages between 150 250 A
Premium composition reduces oxide creation on tip, resulting in less time grinding, to improve productivity and reduce inefficent usage
Using the appropriate size of tungsten is essential for optimal performance and efficiency. Also available in .020, .040, 1/16, 1/8 and 5/32 in electrode diameters

Specifications

Feature	Value
LECO Diameter	3/32 IN
LECO Package	1 LB TB

Reviews

Q&A

Product Overview

Lincoln 2% Lanthanated Premium Tungsten Electrode, 3/32” x 7” KP4721-332

Features

2% Lanthanated (EWLa-2 / Blue) tungsten is ideal for medium to high amperage applications which use a DC or AC currents
Premium and consistent composition for excellent arc starts and stabilty
3/32" electrode diameter should used with amperages between 150 250 A
Premium composition reduces oxide creation on tip, resulting in less time grinding, to improve productivity and reduce inefficent usage
Using the appropriate size of tungsten is essential for optimal performance and efficiency. Also available in .020, .040, 1/16, 1/8 and 5/32 in electrode diameters

Specifications

Feature	Value
LECO Diameter	3/32 IN
LECO Package	1 LB TB

Lincoln Electric Welding Wire 3/32"

Features

Product Overview

Lincoln 2% Lanthanated Premium Tungsten Electrode, 3/32” x 7” KP4721-332

Features

Specifications

Product Reviews

Questions & Answers