Cupronickel tsiri ne na jan karfe gami da nickel a matsayin babban alloying kashi. Gilashin nickel na jan karfe da aka dogara akan allo na jan karfe-nickel tare da abubuwa na uku kamar su zinc, manganese, aluminum, da dai sauransu ana kiran su zinc-nickel-nickel strips, manganese-nickel-nickel strips, da aluminum-nickel-nickel strips daidai da haka. Copper-nickel gami yana da kyakkyawan juriya na lalata, matsakaicin ƙarfi, babban filastik, kuma ana iya sarrafa shi ta matsa lamba mai zafi da sanyi.
Fararen tagulla ya kasu kashi biyar: farar farar tagulla na yau da kullun, tarkacen farin ƙarfe na jan ƙarfe, ɗigon farin jan ƙarfe na manganese, ginshiƙan farar jan ƙarfe na zinc da filayen farin jan ƙarfe na aluminum.
Fararen jan karfe na yau da kullun suna da maki guda huɗu kamar B0.6, B5, B19, da B30. Wadanda aka saba amfani da su sune B19 da B30, kuma akwai ƙarin maki a cikin jerin ma'auni na Amurka. Taguwar farin tagulla shine ci gaba da ingantaccen bayani wanda Cu da Ni suka kirkira, tare da lattice mai siffar fuska, kamar yadda aka nuna a hoto 1-18. Lokacin da zafin jiki ya yi ƙasa da digiri 322, zane-zanen lokaci na jan karfe-nickel yana da yanki mai faɗi mai faɗin yanayin zafin jiki na bazuwar metastable, yana ƙara abubuwa na uku kamar Fe, Cr, Sn, Ti, Co, Si, Al zuwa alloy Cu-Ni. Da sauransu, na iya canza abun da ke ciki, kewayon zafin jiki da matsayi na bazuwar metastable, kuma yana iya inganta wasu kaddarorin gami. Farantin tagulla na yau da kullun yana da kyakkyawan sanyi da aiki mai zafi. Ana iya sarrafa shi cikin sauƙi zuwa nau'i daban-daban kamar faranti, tubes, tubes, sanduna, siffofi, da wayoyi. Kyakkyawan aikin walda, za'a iya amfani dashi don laushi mai laushi da tauri, walƙiya garkuwar gas da walƙiya juriya, da sauransu; yankan yi shine 20% na HPb63-3 mai yanke tagulla kyauta. Farantin tagulla na yau da kullun yana da kyakkyawan juriya na lalata, matsakaicin ƙarfi, babban filastik, ana iya sarrafa shi ta matsa lamba mai zafi da sanyi, da kyawawan kayan lantarki. Bugu da ƙari, ana amfani da shi azaman kayan gini, yana da mahimmancin juriya mai girma da kuma kayan aikin thermocouple.