... Materials: WL10 ( Tungsten Lanthanum Alloy) Size: Dia65 X 65mm Machined Finish: Ra3.2 Tungsten electrode ... composition: Pure tungsten >99.95% Tungsten alloy: Tungsten Copper, Tungsten Silver, Tungsten lanthanum Specification: according to customer drawingProduce Method: Powder ... Cu30% , 75%W/25%Cu , 80%W/20%CuTungsten Lanthanum alloy1%La2O3, 1.5%La2O3, , 2%La2O3, tungsten lanthanum alloy rod