Aloi za Nikeli ya Shaba (CuNi) ni nyenzo za upinzani wa kati hadi chini ambazo kwa kawaida hutumika katika programu zilizo na halijoto ya juu zaidi ya kufanya kazi hadi 400°C (750°F).
Kwa coefficients ya joto ya chini ya upinzani wa umeme, upinzani, na hivyo utendaji, ni thabiti bila kujali joto. Aloi za nickel za shaba hujivunia uboreshaji mzuri, zinauzwa kwa urahisi na kulehemu, na pia zina upinzani bora wa kutu. Aloi hizi kwa kawaida hutumiwa katika matumizi ya sasa ya juu yanayohitaji kiwango cha juu cha usahihi.
Daraja | CuNi44 | CuNi23 | CuNi10 | CuNi6 | CuNi2 | CuNi1 | CuNi8 | CuNi14 | CuNi19 | CuNi30 | CuNi34 | CuMn3 | |
Cuprothal | 49 | 30 | 15 | 10 | 5 | ||||||||
Isabellehutte | ISOTAN | Aloi 180 | Aloi 90 | Aloi 60 | Aloi 30 | ISAYA 13 | |||||||
Utungaji mdogo% | Ni | 44 | 23 | 10 | 6 | 2 | 1 | 8 | 14 | 19 | 30 | 34 | - |
Cu | Bal | Bal | Bal. | Bal. | Bal. | Bal. | Bal. | Bal. | Bal | Bal | Bal | Bal | |
Mn | 1 | 0.5 | 0.3 | - | - | - | - | 0.5 | 0.5 | 1.0 | 1.0 | 3.0 | |
Kiwango cha juu cha halijoto cha kufanya kazi (uΩ/m kwa 20°C) | 0.49 | 0.3 | 0.15 | 0.10 | 0.05 | 0.03 | 0.12 | 0.20 | 0.25 | 0.35 | 0.4 | 0.12 | |
Ustahimilivu (Ω/cmf kwa 68°F) | 295 | 180 | 90 | 60 | 30 | 15 | 72 | 120 | 150 | 210 | 240 | 72 | |
Kiwango cha juu cha halijoto cha kufanya kazi (°C) | 400 | 300 | 250 | 200 | 200 | 200 | 250 | 300 | 300 | 350 | 350 | 200 | |
Uzito (g/cm³) | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | 8.9 | |
TCR(×10-6/°C) | <-6 | <16 | <50 | <60 | <120 | <100 | <57 | <30 | <25 | <10 | <0 | <38 | |
Nguvu ya Mkazo (Mpa) | ≥420 | ≥350 | ≥290 | ≥250 | ≥220 | ≥210 | ≥270 | ≥310 | ≥340 | ≥400 | ≥400 | ≥290 | |
Kurefusha(%) | ≥25 | ≥25 | ≥25 | ≥25 | ≥25 | ≥25 | ≥25 | ≥25 | ≥25 | ≥25 | ≥25 | ≥25 | |
EMF dhidi ya Cu UV/°C(0~100°C) | -43 | -34 | -25 | -12 | -12 | -8 | 22 | -28 | -32 | -37 | -39 | - | |
Kiwango Myeyuko (°C) | 1280 | 1150 | 1100 | 1095 | 1090 | 1085 | 1097 | 1115 | 1135 | 1170 | 1180 | 1050 | |
Mali ya Magnetic | yasiyo | yasiyo | yasiyo | yasiyo | yasiyo | yasiyo | yasiyo | yasiyo | yasiyo | yasiyo | yasiyo | yasiyo |