Tungsten Electrode

MetalsTek Engineering provides a wide range of high-quality Tungsten Electrodes to meet all your needs. Our Tungsten Electrodes include pure Tungsten, Tungsten Alloy, Tungsten Mesh, and more. Customized Tungsten Electrodes are also available.

Tungsten Electrode (W)

Material: Pure Tungsten or Doped Tungsten

Density: 18.2~19.0 g/cc

Standard Sizes: Diameter 1mm, 1.6mm, 2mm, 2.4mm, 3.2mm, 4mm, 4.8mm, 6.4mm, 8mm, and 10mm; Length 50mm, 75mm, 150mm, 175mm, 178mm

Tolerance: +/-0.05mm * +/-0.1mm

Other: Size Can be Customized

Tungsten Mesh Electrode (W)

Material: Tungsten

Purity: W 99.95% Min

Size & Mesh Size: Can be Customized

Other Materials: Molybdenum, Titanium, Nickel, Copper, Aluminum, Silver, Stainless Steel

Silver Tungsten Carbide Electrode (Ag-WC)

Material: Silver, WC

Composition: Ag 50%, 60%, 70%

Density: 11.2~12.2 g/cc

HRB Hardness: 57~85

Size: Can be Customized

Description

Tungsten electrodes and tungsten alloy electrodes are crucial components in welding applications, known for their high melting points, excellent conductivity, and durability. In its pure form or as part of tungsten alloys, they are widely used in various welding processes, particularly in tungsten inert gas (TIG) or gas tungsten arc welding (GTAW).

Tungsten alloy electrodes are composed of tungsten combined with other elements, such as thorium, cerium, lanthanum, or zirconium, forming tungsten alloys. Alloyed tungsten electrodes offer advantages like improved electron emission, better arc stability, and increased current-carrying capacity. For example, thoriated tungsten electrodes (with thorium) are known for their longevity and excellent high-current performance.

Tungsten Electrode Specifications of MetalsTek

Item Name	Oxide Additives (%)	Impurities (%)	Electric Discharged Power (eV)	Color
Pure Tungsten Electrode	N/A	< 0.2%	4.5eV	Green
Thoriated Tungsten Electrode	ThO₂ (0.90% ~ 1.20%)	< 0.2%	2.0eV ~ 3.0eV	Yellow
	ThO₂ (1.80% ~ 2.20%)	< 0.2%	2.0eV ~ 3.0eV	Red
	ThO₂ (2.80% ~ 3.20%)	< 0.2%	2.0eV ~ 3.0eV	Violet
	ThO₂ (3.80% ~ 4.20%)	< 0.2%	2.0eV ~ 3.0eV	Orange
Ceriated Tungsten Electrode	CeO₂(1.80% ~ 2.20%)	< 0.2%	2.7eV ~ 2.8eV	Grey
Lanthanated Tungsten Electrode	La₂O₃ (0.80% ~ 1.20%)	< 0.2%	2.8eV ~ 3.2eV	Black
	La₂O₃ (1.30% ~ 1.70%)	< 0.2%	2.8eV ~ 3.0eV	Golden
	La₂O₃ (1.80% ~ 2.20%)	< 0.2%	2.6eV ~ 2.7eV	Azure
Yttriated Tungsten Electrode	Y₂O₃ (1.80% ~ 2.20%)	< 0.2%	2.0eV ~ 3.9eV	Blue
Zirconiated Tungsten Electrode	ZrO₂ (0.20 ~ 0.40%)	< 0.2%	2.6eV ~ 2.7eV	Brown
Zirconiated Tungsten Electrode	ZrO₂ (0.70% ~ 0.90%)	< 0.2%	2.6eV ~ 2.7eV	White
Composite Electrode	CeO₂, ThO₂, La₂O₃, ZrO₂, Y₂O₃(1.50% ~ 3.00%)	< 0.2%	N/A	Light Green

Tungsten Electrodes Purity and Composition

Pure tungsten electrodes (Green Tip) have a high work function, making them suitable for AC welding of aluminum and magnesium alloys. However, they have a lower current capacity and shorter electrode life compared to alloyed tungsten electrodes.
Thoriated tungsten electrodes (2% Thoriated, Red Tip) are commonly used for DC welding due to their excellent arc starting, low burn-off rate, and good arc stability. However, they contain a small amount of radioactive thorium oxide, which may raise environmental and safety concerns.
Lanthanated tungsten electrodes (1.5% Lanthanated, Gold Tip and 2% Lanthanated, Dark Blue Tip) are popular non-radioactive alternatives to thoriated tungsten. They offer good arc starting, low burn-off rates, and arc stability, making them suitable for both AC and DC welding applications.
Ceriated tungsten electrodes (2% Ceriated, Grey Tip) are recommended for low-amperage DC welding, such as orbital tube welding, thin sheet metal, and small parts. They have good arc starting and low burn-off rates.
Zirconiated tungsten electrodes (Brown Tip) are known for producing minimal tungsten contamination, making them suitable for radiographic quality welding and applications requiring minimal contamination.

Applications of Tungsten Electrodes

Tungsten electrodes find versatile applications in welding processes, particularly in Tungsten Inert Gas (TIG) or Gas Tungsten Arc Welding (GTAW). Here are some key applications:

1.TIG Welding: Material Welding: Tungsten electrodes are widely used for welding various materials, including stainless steel, aluminum, nickel alloys, and titanium. TIG welding allows for precise control and is often employed in industries like aerospace, automotive, and general fabrication.
2.High-Performance Welding: Critical Welds: Tungsten electrodes are preferred for critical welds that demand high precision, such as in the aerospace industry for welding components of aircraft and spacecraft.
3.Nuclear Industry: Nuclear Applications: Tungsten electrodes are utilized in the nuclear industry for welding components used in nuclear reactors due to their high melting point and non-reactive nature.
4.High-Pressure Applications: High-Pressure Vessels: Tungsten electrodes are chosen for welding applications involving high-pressure vessels where the weld quality and integrity are critical.
5.Specialty Applications: Thin Metal Sheets: Tungsten electrodes are used for welding thin metal sheets where control over the heat input is crucial to prevent warping or burn-through.
6.AC and DC Welding: AC Welding: Tungsten electrodes are effective for alternating current (AC) welding applications, where the electrode's ability to maintain a stable arc on both positive and negative cycles is essential.
7.Tungsten Inclusion Prevention: Carbon Steel Welding: Tungsten electrodes are employed in carbon steel welding to prevent tungsten inclusions in the weld pool, which can compromise the quality of the weld.
8.Specialized Alloys: Exotic Alloys: Tungsten electrodes are used in welding exotic alloys that require precise control and high-temperature resistance.

Tungsten electrodes are a crucial component in TIG welding, providing stability, precision, and versatility in various welding applications across different industries. The choice of tungsten electrode type depends on factors such as the material being welded, the welding process, and the desired weld characteristics.

Tungsten Electrode Packaging

Our Tungsten Electrodes are meticulously tagged and externally labeled, ensuring both efficient identification and rigorous quality control. We prioritize utmost care to prevent any potential damage that may occur during storage or transportation.

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