Multiattribute Assessment of Consumables for TIG Welding of Aluminum Alloys

Table 2

List of attributes and alternates for electrode [2].

Properties	Pure tungsten	2% thoriated	2% ceriated	1.5% lanthanated	0.8% zirconiated
(1) Electrode oxide	0.01	2.6	3.2	2.5	0.3
work function (eV)
(2) Density (g/cm^3)	19.25	11.72	6.65	5.7	6.49
(3) Volume % of 2%	6	3.8	5.2	5.7	6.9
weight of electrode
(4) Melting point (°C)	3410	1750	795	826	1852
(5) Electron negativity	1.7	1.3	1.0	1.1	1.2
(according to pauling)
(6) Cost ($)	23.99	14.99	18.4	23.99	20.3
(7) Particle size (Nm)	30	50	40	20	30