Nikel navlari va kimyoviy tarkibi
| Sof nikel darajasi | Ni+Ko | Cu | Si | Mn | C | Mg | S | Fe | Jami iflosliklar | UNS belgisi |
| dan kam emas | ||||||||||
| N2 | 99.98 | 0.001 | 0.003 | .002 | .005 | .003 | .001 | .007 | .02 | |
| N4 | 99.9 | 0.015 | 0.03 | .002 | .01 | .01 | .001 | .04 | 0.1 | N02201 |
| N6 | 99.5 | 0.06 | 0.10 | .05 | .10 | .10 | .005 | .10 | 0.5 | N02200 |
| N8 | 99.0 | 0.15 | 0.15 | .20 | .20 | .10 | .015 | .30 | 1.0 | |
| DN | 99.35 | 0.06 | 0.02-0.10 | 0.05 | .02.10 | .02-.10 | .005 | .10 | 0.35 | |
| NY1 | 99.7 | 0.1 | 0.1 | - | .02 | .10 | .005 | .10 | 0.3 | |
| NY2 | 99.4 | 0.01-0.10 | 0.1 | - | - | - | 0.002-0.01 | .10 | 0.6 | |
| NY3 | 99.0 | 0.15 | 0.2 | - | 0.1 | 10 | 0.005 | .25 | 1.0 | |
| NMg0.1 | 99.6 | 0.05 | 0.02 | .05 | .05 | 0.07~0.15 | 0.005 | .07 | .40 | |
| NSI0.19 | 99.4 | 0.05 | 0.15~0.25 | .05 | .10 | .05 | 0.005 | .07 | .50 | |
Nikelning korroziyaga chidamliligi
Nikel ayniqsa gidroksidi korroziyaga chidamli va yuqori haroratda yoki olovda eritilgan gidroksidida nisbatan barqaror, shuning uchun u asosan gidroksidi sanoatda qo'llaniladi. Oddiy haroratda salyangoz dengiz suvi, tuz eritmasi va organik muhitda (yog 'kislotasi, fenol, fermentatsiya va boshqalar kabi) juda barqaror bo'lib, noorganik kislota korroziyasiga chidamli emas, sirka kislotasi va engil kislotada ham barqaror emas.
