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.
18.65 - 18.75 g/cm³ at 23 °C
40 - 45 mm
Available dimensions (diameter x length, mm x mm): 45 x 300-2400; 40-45 x 300-3000
300 - 3000 mm
0.9 - 1.1 %
0.77 - 0.94 %
WL is a popular choice for ion sources, lamp electrodes and welding electrodes.
This material data has been provided by Plansee.