I-Nickel Alloy 400 no-Monel 400, eyaziwa nangokuthi yi-UNS N04400, i-alloy esuselwa ku-nickel-copper eyakhiwe ngokuyinhloko i-nickel yesibili ne-lickel yesithathu neyodwa. I-Nickel Alloy 400 yaziwa ngokumelana kwayo ezinhlobonhlobo zezimo ezilimazayo, kufaka phakathi i-alkalis (noma ama-acid), amanzi anosawoti, i-hydrofluoric acid, ne-sulfuric acid. Njengoba i-monel 400 noma i-alloy 400 iyinsimbi ebandayo esetshenzisiwe, le alloy inobulukhuni obuphezulu, ukuqina namandla. Ngokusebenza okubandayo kwe-ASTM B164 ANS N04400 Bar stock, i-alloy ifakwa emazingeni aphezulu wengcindezi yemishini, yona ebangela izinguquko kwi-miscruccucture ye-alloy.