Aloi za upinzani wa umeme hutumiwa sana katika hita za umeme, haswa NiCr. Nichrome ni nikeli na aloi ya chromium ambayo hutumiwa kwa kawaida katika uzalishaji wa waya upinzani kwa sababu ya upinzani wake wa juu na sifa thabiti za kuzuia oxidation kwenye joto la hadi 1250 ° C ndiyo sababu waya za upinzani zinafaa kwa huduma katika mazingira magumu ambapo zinakabiliwa na shinikizo na joto. Kiwanda cha Vladimir cha Aloi za Usahihi kimekuwa kikitengeneza aloi za upinzani na aloi za kupokanzwa kutoka kwa msingi wake. Nguvu zetu ni kutengeneza waya, vipande, utepe na foil, ikijumuisha aloi za NiCr na aloi za Fe-Cr-Al.
Daraja | Ni80Cr20 | Ni70Cr30 | Ni60Cr23 | Ni60Cr15 | Ni35Cr20 | Karma | Evanohm | |
Utungaji mdogo% | 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 | ||||||
Kiwango cha juu cha halijoto cha kufanya kazi (°C) | 1200 | 1250 | 1150 | 1150 | 1100 | 300 | 400 | |
Ustahimilivu(Ω/cmf,20℃) | 1.09 | 1.18 | 1.21 | 1.11 | 1.04 | 1.33 | 1.33 | |
Ustahimilivu (uΩ/m,60°F) | 655 | 704 | 727 | 668 | 626 | 800 | 800 | |
Uzito (g/cm³) | 8.4 | 8.1 | 8.4 | 8.2 | 7.9 | 8.1 | 8.1 | |
Uendeshaji wa Joto(KJ/m·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 | - | - | |
Kiwango Myeyuko(℃) | 1400 | 1380 | 1370 | 1390 | 1390 | 1400 | 1400 | |
Ugumu (Hv) | 180 | 185 | 185 | 180 | 180 | 180 | 180 | |
Nguvu ya Mkazo (N/mm2) | 750 | 875 | 800 | 750 | 750 | 780 | 780 | |
Kurefusha(%) | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | 10-20 | 10-20 | |
Muundo wa Micrographic | austenite | austenite | austenite | austenite | austenite | austenite | austenite | |
MagneticProperty | 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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