Pure lanthanated tungsten - also written lanthanum tungsten, LaW, or W-La₂O₃ - is an oxide-dispersion-strengthened (ODS) tungsten alloy in which fine lanthanum oxide particles (1–5 wt%) are uniformly dispersed in a pure tungsten matrix. Compared with pure tungsten, it keeps its strength and ductility at far higher temperatures, resists creep above 2000 °C, and emits electrons more efficiently.
Kingdon manufactures lanthanated tungsten wire, rod, bar, sheet, and machined electrodes in WL10, WL15, and WL20 grades - custom sizes from 1 pc, with a material certificate for every lot.
Introduction to Lanthanum Tungsten (LaW)
Lanthanum tungsten, often abbreviated as LaW or written as W-La₂O₃, is not a distinct chemical compound but a dispersion-strengthened alloy: a composite material consisting of a tungsten (W) metal matrix infused with a fine, uniform dispersion of lanthanum oxide (La₂O₃) particles, typically comprising 1–5% of the total weight.
It belongs to the class of advanced materials known as oxide-dispersion-strengthened (ODS) alloys. The incorporation of lanthanum oxide nanoparticles significantly enhances the properties of pure tungsten, making it superior for demanding high-temperature applications.
Properties and Advantages
Lanthanated tungsten improves on pure tungsten in four key ways:
Higher recrystallization temperature
Pure tungsten becomes brittle after recrystallization. The La₂O₃ particles inhibit grain growth and raise the recrystallization temperature, so the material keeps its ductility and mechanical strength much longer under thermal stress.
01
Superior high-temperature stability and creep resistance
The dispersed La₂O₃ particles act as physical barriers that pin grain boundaries and dislocations, preventing deformation under mechanical load well above 2000 °C.
02
Enhanced thermionic emission
Lanthanum has a lower work function than tungsten. Lanthanum atoms at the electrode surface reduce the energy needed for electrons to escape, producing higher emission efficiency - a decisive advantage in electron sources.
03
Improved mechanical strength and durability
Dispersion strengthening raises hardness, tensile strength, and resistance to deformation at both room and elevated temperatures.
04
Specifications and Grades
Grades
| Grade | La₂O₃ Content (wt%) | Typical Application |
|---|---|---|
| WL10 | 0.8 – 1.2 | Welding electrodes, general high-temperature components |
| WL15 | 1.3 – 1.7 | TIG / plasma electrodes, furnace parts |
| WL20 | 1.8 – 2.2 | Electron gun cathodes, high-emission filaments |
Typical Properties
| Property | Value |
|---|---|
| Purity | ≥ 99.95% W |
| Density | ≈ 19.2 g/cm³ |
| Melting Point | ≈ 3400 °C |
| Standard | ISO2768 |
| Certificate | Material Test Certificate (MTC) with every lot |
Available Forms
| Form | Size Range | Surface / Finish |
|---|---|---|
| Wire | Ø [0.05 – 3.0] mm | Black, cleaned, straightened |
| Rod / Bar | Ø [1 – 80] mm | Swaged, ground, polished |
| Sheet / Plate | Thk [0.05 – 50] mm | Cold-rolled, alkali-washed |
| Welding Electrodes | Ø [1.0 – 6.4] mm × L [150 / 175] mm | Ground, ground finish |
| Machined Parts | To drawing | Cathodes, filaments, crucibles, shields |
Custom fabrication: we produce to your drawing, sample, or machine model - including bent filaments, threaded rods, and machined cathode assemblies. Minimum order: 1 pc or 1 kg.
- Electron microscopy and spectroscopy. Preferred material for electron gun cathodes and filaments in SEM and TEM instruments - higher emission current and longer service life than pure tungsten filaments.
- Welding and plasma arc cutting. Non-consumable lanthanated tungsten electrodes for TIG welding and plasma torches: stable arc formation, better performance at high current, and slower tip degradation.
- High-temperature furnace components. Heating elements, radiation shields, and support structures in vacuum and high-temperature furnaces where heat resistance and structural integrity are critical.
- Aerospace and nuclear fusion research. Critical components for aerospace engines and plasma-facing materials such as divertors, where the material must withstand intense heat and particle flux.
Quality, Standard & Packing
Every lot of lanthanated tungsten is produced from high-purity tungsten powder with controlled La₂O₃ doping, then sintered, rolled or swaged, and stress-relief annealed. Each batch is inspected for density, dimensional tolerance, and surface condition, and ships with a material test certificate. Standard export packing in plywood cases protects edges and surfaces during transit.
How to Order
- Send us your order list - models, quantities, drawings, or the grade (WL10 / WL15 / WL20).
- We reply with a Proforma Invoice (PI) including shipping cost and payment terms.
- Confirm the PI and arrange payment; production starts after payment is confirmed.
- We ship the goods and send you the tracking number.
- Express delivery typically arrives 5–7 days after dispatch.
About Zhuzhou Kingdon Industrial & Commercial Co.,Ltd
Zhuzhou Kingdon Industrial & Commercial Co., Ltd has been a dedicated manufacturer of high-quality tungsten and molybdenum products since 2004. Our overseas marketing network now serves customers in the USA, UK, Germany, India, Brazil, Poland, the Czech Republic, Slovenia, and Singapore.
Our technical team provides mature customization services and can help you select the right raw material for your application. We offer 24/7 customer service.
- Direct manufacturer. We melt, sinter, and machine tungsten in our own facility in Zhuzhou, China - no middlemen, factory-direct pricing.
- No minimum order. MOQ is 1KGS, and custom lanthanated tungsten parts are produced from your drawing or sample.
- Fast, safe delivery. Standard items ship in 10–20 working days in export-grade plywood cases.
- Proven export record. We supply customers in the USA, UK, Germany, India, Brazil, Poland, Czech Republic, Slovenia, and Singapore.
- After-sales guarantee. Replacement service and technical support for the life of the product.
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