Anomet 20 is a standard platinized anode material which is 20% niobium by crossectional area with a copper core. Anomet 20 is available as a stock item in both single and double platinum thicknesses. The use of Anomet 20 is recommended for anode diameters of 1/8" and above. At these diameters, the niobium thickness is sufficient for most applications. Only where there are severe mechanical or unique handling concerns is a heavier niobium layer considered necessary.
| Anomet 20 (20% Nb) | ||||
| Diameter | Nb Thickness | Resistance | Pt Thickness | |
| inches | inches | microhm/ft | u-in. | (2X)* |
| 0.75 | 0.038 | 22 | 300 | -600 |
| 0.5 | 0.025 | 50 | 200 | -400 |
| 0.375 | 0.019 | 89 | 150 | -300 |
| 0.25 | 0.013 | 201 | 100 | -200 |
| 0.188 | 0.009 | 356 | 75 | -150 |
| 0.125 | 0.006 | 806 | 50 | -100 |