Tungsten Lanthanum Oxide (WL10) Smooth Forged Rod

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Description

Tungsten is doped with between 1.0 and 2.0 percent of lanthanum oxide (La₂O₃) by weight in order to improve its creep resistance and increase the recrystallization temperature. WL is also easier to machine due to the finely distributed oxide particles in its structure. The electron work function of tungsten-lanthanum oxide is significantly lower than that of pure tungsten.

This material data has been provided by Plansee.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

Ashby charts

Properties

General

PropertyTemperatureValue

Density

23.0 °C

18.65 - 18.75 g/cm³

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Dimension

PropertyValue

Diameter

40 - 45 mm

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Length

300 - 3000 mm

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Dimensions

Available dimensions (diameter x length, mm x mm): 45 x 300-2400; 40-45 x 300-3000

Mechanical

PropertyTemperatureValue

Hardness, Vickers, 30

23.0 °C

380 [-]

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Chemical properties

PropertyValueComment

Aluminium

1E-4 %

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Cadmium

1E-4 %

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Carbon

6E-4 %

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Chromium

3E-4 %

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Copper

1E-4 %

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Iron

8E-4 %

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Lanthanum

0.77 - 0.94 %

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as La

Lead

1E-4 %

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Molybdenum

1.2E-3 %

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Nickel

2E-4 %

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Nitrogen

1E-4 %

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Other

0.9 - 1.1 %

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as La₂O₃

Potassium

1E-4 %

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Silicon

1E-4 %

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Tungsten

balance

Technological properties

Property
Application areas

WL is a popular choice for ion sources, lamp electrodes and welding electrodes.