Chitsulo cha nickel chachitsulo chimapezeka pa kutentha kosiyanasiyana mwa kusintha kuchuluka kwa mphamvu yamkati ya nickel ndi kuchuluka kwa kukulitsa kwa magalasi osiyanasiyana ofewa ndi ceramic kofanana ndi mndandanda wa kukulitsa kwa alloy, kuchuluka kwake kokulitsa ndi kutentha kwa Curie kumawonjezeka ndi kuchuluka kwa nickel. Kuphatikizikaku kumagwiritsidwa ntchito kwambiri mumakampani opanga magetsi otulutsa mpweya komanso kapangidwe kotseka zinthuzo.
Kapangidwe ka Mankhwala mu %, Invar
| mtundu | Kapangidwe ka mankhwala | ||||||||
| Ni | Fe | C | P | Si | Co | Mn | Al | S | |
| ≤ | |||||||||
| 4j42 | 41.5~42.5 | Mbala | 0.05 | 0.02 | 0.3 | - | 0.80 | 0.10 | 0.02 |
| 4j45 | 44.5~45.5 | Mbala | 0.05 | 0.02 | 0.3 | - | 0.80 | 0.10 | 0.02 |
| 4j50 | 49.5~50.5 | Mbala | 0.05 | 0.02 | 0.3 | 1.0 | 0.80 | 0.10 | 0.02 |
| 4j52 | 51.5~52.5 | Mbala | 0.05 | 0.02 | 0.3 | - | 0.60 | - | 0.02 |
| 4j54 | 53.5~54.5 | Mbala | 0.05 | 0.02 | 0.3 | - | 0.60 | - | 0.02 |
Zokhazikika zakuthupi ndi mawonekedwe a makina a alloy:
| mtundu | Kutentha kwa matenthedwe | Mphamvu yeniyeni ya kutentha | Kuchulukana | Kukana kwa magetsi | Malo a Curie |
| 4j52 | 16.7 | 502J | 8.25 | 0.43 | 520 |
| Chikhalidwe chodziwika bwino cha kukula (10 -6 / ºC) | ||||||||
| Kuchuluka kwa kutentha | 20~100 | 20~200 | 20~300 | 20~350 | 20~400 | 20~450 | 20~500 | 20~600 |
| Chiŵerengero cha kukula | 10.3 | 10.4 | 10.2 | 10.3 | 10.3 | 10.3 | 10.8 | 11.2 |
Aloyi ya 4 j52 imagwiritsidwa ntchito makamaka potseka magalasi ofewa, ma fuse ang'onoang'ono a chubu.
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