nickel-Christmium-molybdenum-colunbium coluneli colunel 625 ncf 625 na 24 mark
An zabi shi da cikakken 718 Alloy da aka zaba ta hanyar injiniyan ƙwararrun injiniyoyi don ƙarfinta a cikin matsanancin zafin jiki a duka ƙarshen bakan. Ana iya amfani dashi daga ƙarancin yanayin zafi har zuwa 1300¡¡AF \ / 704¡ata. Yana nuna babban yawan amfanin ƙasa sosai, na tensile da creep na rupture kadarorin a duk faɗin kewayon. Hakanan yana bayar da kyakkyawan yanayi da ƙarfin tasiri.
Alloy 600 na iya zama zafi ko sanyi kafa ta amfani da ayyukan al'ada. Ya kamata a yi zafi tsakanin 1600¡ula da 225} Guji kowane aiki tsakanin 1200¡ula da 1600¡ulaf yayin da bututun gona yake raguwa a wannan kewayon zafin jiki. Alloy suna da juriya na sulfuric acid a zazzabi a daki, amma bai kamata a yi amfani da shi a cikin wannan aikace-aikacen a yanayin zafi da aka yi. Juriya ga hydrochloric acid yayi kama da sulfuric acid. Abin yaroyan yana da kyakkyawan juriya ga phosphoric acid a zazzabi a daki a cikin dukkan taro, amma ana kai hari cikin zafin jiki da sauri.