Aloi za upinzani wa umeme hutumika sana katika hita za umeme, haswa NiCr. Nichrome ni aloi ya nikeli na kromiamu ambayo hutumika sana katika utengenezaji wa waya za upinzani kwa sababu ya upinzani wake mkubwa na sifa thabiti za kuzuia oksidi katika halijoto hadi 1250°C ndiyo maana waya za upinzani zinafaa vizuri kwa huduma katika mazingira magumu ambapo hukabiliwa na shinikizo na joto. Kiwanda cha Vladimir cha Precision Alloys kimekuwa kikitengeneza aloi za upinzani na aloi za joto kutoka msingi wake. Nguvu yetu ni kutengeneza waya, vipande, utepe na foil, ikiwa ni pamoja na aloi za NiCr na aloi za Fe-Cr-Al.
| Daraja | Ni80Cr20 | Ni70Cr30 | Ni60Cr23 | Ni60Cr15 | Ni35Cr20 | Karma | Evanohm | |
| Muundo wa nominella% | Ni | Bal | Bal | 58.0-63.0 | 55.0-61.0 | 34.0-37.0 | Bal | Bal |
| Cr | 20.0-23.0 | 28.0-31.0 | 21.0-25.0 | 15.0-18.0 | 18.0-21.0 | 19.0-21.5 | 19.0-21.5 | |
| Fe | ≦1.0 | ≦1.0 | Bal | Bal | Bal | 2.0-3.0 | – | |
| Al1.0-1.7 Ti 0.3-0.5 | Al2.7-3.2 Mn0.5-1.5 | Al2.7-3.2 Cu2.0-3.0 Mn0.5-1.5 | ||||||
| Halijoto ya juu zaidi ya uendeshaji(°C) | 1200 | 1250 | 1150 | 1150 | 1100 | 300 | 400 | |
| Uimara (Ω/cmf, 20℃) | 1.09 | 1.18 | 1.21 | 1.11 | 1.04 | 1.33 | 1.33 | |
| Uimara (uΩ/m,60°F) | 655 | 704 | 727 | 668 | 626 | 800 | 800 | |
| Uzito (g/c)m³) | 8.4 | 8.1 | 8.4 | 8.2 | 7.9 | 8.1 | 8.1 | |
| Uendeshaji wa joto (KJ/m2)·h·℃) | 60.3 | 45.2 | 45.2 | 45.2 | 43.8 | 46.0 | 46.0 | |
| Mgawo wa Upanuzi wa Mstari (×10¯6/℃) 20-1000℃) | 18.0 | 17.0 | 17.0 | 17.0 | 19.0 | - | - | |
| Sehemu ya Kuyeyuka (℃) | 1400 | 1380 | 1370 | 1390 | 1390 | 1400 | 1400 | |
| Ugumu (Hv) | 180 | 185 | 185 | 180 | 180 | 180 | 180 | |
| Nguvu ya Kubonyeza (N/mm2 ) | 750 | 875 | 800 | 750 | 750 | 780 | 780 | |
| Urefu (%) | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | 10-20 | 10-20 | |
| Muundo wa Mikrografiki | austenite | austenite | austenite | austenite | austenite | austenite | austenite | |
| Sifa ya Sumaku | Sio | Sio | Sio | Kidogo | Sio | Sio | Sio | |
| Maisha ya Haraka (h/℃) | ≥81/1200 | ≥50/1250 | ≥81/1200 | ≥81/1200 | ≥81/1200 | - | - | |
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