Ana amfani da ƙarfe don ƙera ƙa'idodin juriya, waya mai daidaitomasu juriya ga rauni, potentiometers, shunts da sauran na'urorin lantarki
da kuma kayan lantarki. Wannan gami na Copper-Manganese-Nickel yana da ƙarancin ƙarfin lantarki mai zafi (emf) idan aka kwatanta da Copper, wanda
ya sa ya zama mai kyau don amfani a cikin da'irori na lantarki, musamman DC, inda emf mai zafi mara kyau zai iya haifar da matsala a cikin na'urorin lantarki
Kayan aiki. Abubuwan da ake amfani da wannan gami galibi suna aiki ne a zafin ɗaki; saboda haka ƙarancin zafinsa yana da alaƙa da yanayin zafi.
Ana sarrafa juriyar iska a cikin kewayon 15 zuwa 35ºC.
86% jan ƙarfe, 12% manganese, da 2% nickel
| Suna | Nau'i | Sinadarin sinadarai (%) | |||
| Cu | Mn | Ni | Si | ||
| Manganin | 6J12 | Hutu | 11-13 | 2-3 | - |
| F1 Manganin | 6J8 | Hutu | 8-10 | - | 1-2 |
| F2 Manganin | 6J13 | Hutu | 11-13 | 2-5 | - |
| Constantan | 6J40 | Hutu | 1-2 | 39-41 | - |
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