Ucingo lwe-NiCr20AlSi/IKarmaucingo lwe /6j22 lweeResistors
I-alloy yeKarma yenziwe ngobhedu, i-nickel, i-Aluminiyam kunye ne-Iron njengezona zinto ziphambili. Ukumelana kwayo kuphindwe ka-2 ~ 3 kuneManganin. Ine-coefficient yobushushu obuphantsi (TCR), i-EMF ephantsi yobushushu xa ithelekiswa ne-copper, ukumelana kwayo okuhlala ixesha elide kunye ne-anti-oxidation enamandla. Ubushushu bayo bokusebenza bubanzi kuneManganin (-60 ~ 300ºC). Ifanelekile ukwenza izinto ezichaneke ngokuchanekileyo kunye ne-strain foil.
Umxholo weKhemikhali (%)
| Ibanga | C | Si | Mn | P | S | Ni | Al | Fe | Cr |
| IKarma | ≤0.04 | ≤0.20 | 0.5~1.05 | ≤0.010 | ≤0.010 | Ibhala. | 2.7~3.2 | 2.0~3.0 | 19.0~21.5 |
Iipropati Zomzimba
| Ibanga | Uxinano (g/cm3) | I-EMF vs. I-Pt(0-100ºC)μv/ºC | Ubuninzi obusebenzisayo Ubushushu (ºC) | Umqulu ukuxhathisa (μΩ.m) | Ixabiso le-PPM (×10-6/ºC) |
| IKarma | 8.1 | ≤2.5 | ≤300 | 1.33±8%(20ºC) | ≤±30(20ºC) |
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