Waya ya Aloi ya PTC ina upinzani wa wastani na upinzani wa halijoto chanya ya juu. Inatumika sana katika hita mbalimbali. Inaweza kudhibiti halijoto kiotomatiki na kurekebisha nguvu kwa kuweka mkondo thabiti na mkondo unaopunguza. Aloi ya PTC ina faida nyingi kama vile udhibiti wa halijoto kiotomatiki, udhibiti wa nguvu otomatiki, mkondo thabiti, kikomo cha mkondo, kuokoa nishati na maisha marefu ya vitendo.
Tunaweza kutengeneza aina nyingi za waya za upinzani wa PTC. Baadhi ya wateja huita waya za NiFe badala ya waya za PTC.
| Msimbo | Kipenyo cha mm | ||
| Waya | Fimbo | Fimbo ya waya | |
| NF13 | 0.05-8.0 | 12-30 | 8-14 |
| NF15 | 0.05-8.0 | 12-30 | 8-14 |
| NF20 | 0.05-8.0 | 12-30 | 8-14 |
| NF23 | 0.05-8.0 | 12-30 | 8-14 |
| NF25 | 0.05-8.0 | 12-30 | 8-14 |
| NF32 | 0.05-8.0 | 12-30 | 8-14 |
| NF36 | 0.05-8.0 | 12-30 | 8-14 |
| NF38 | 0.05-8.0 | 12-30 | 8-14 |
| NF40 | 0.05-8.0 | 12-30 | 8-14 |
| NF43 | 0.05-8.0 | 12-30 | 8-14 |
| NF46 | 0.05-8.0 | 12-30 | 8-14 |
| NF52 | 0.05-8.0 | 12-30 | 8-14 |
| NF60 | 0.05-8.0 | 12-30 | 8-14 |
| Chapa ya aloi | Kipengele cha kemikali | |
| Ni 100% | Fe 100% | |
| NF13 | 85-95 | Pumziko |
| NF15 | 75-85 | Pumziko |
| NF20 | 70-75 | Pumziko |
| NF23 | 60-65 | Pumziko |
| NF25 | 60-65 | Pumziko |
| NF32 | 50-55 | Pumziko |
| NF36 | 50-55 | Pumziko |
| NF38 | 50-55 | Pumziko |
| NF40 | 50-55 | Pumziko |
| NF43 | 45-50 | Pumziko |
| NF46 | 45-50 | Pumziko |
| NF52 | 45-50 | Pumziko |
| NF60 | 45-50 | Pumziko |
| Chapa ya aloi | Upinzani wa nyuzi joto 20°C | Kiwango cha uvumilivu |
| NF13 | 0.13 | ± 0.02 |
| NF15 | 0.15 | ± 0.02 |
| NF20 | 0.20 | ± 0.02 |
| NF23 | 0.23 | ± 0.02 |
| NF25 | 0.25 | ± 0.02 |
| NF32 | 0.32 | ± 0.02 |
| NF36 | 0.36 | ± 0.02 |
| NF38 | 0.38 | ± 0.02 |
| NF40 | 0.40 | ± 0.02 |
| NF43 | 0.43 | ± 0.02 |
| NF46 | 0.46 | ± 0.02 |
| NF52 | 0.52 | ± 0.02 |
| NF60 | 0.60 | ± 0.02 |
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