4J29 kuri 20 ~ 450 ℃ ifite coeffisiyoneri yo kwagura umurongo hamwe na silicon boron ikomeye ikirahuri Curie point iri hejuru, kandi ifite ubushyuhe buke bwo gutunganya ibintu. Filime ya oxyde ya alide ni nyinshi kandi irashobora kuba nziza

byinjiye neza mubirahuri, kandi ntibikorana na mercure, bituma bikoreshwa mugukoresha Ntabwo bihuza na mercure kandi birakwiriye gukoreshwa mubikoresho birimo gusohora mercure. Nibikoresho nyamukuru bifunga ibikoresho byamashanyarazi.

4J32 ibinyomoro, bizwi kandi nka Super-Invar alloy, ni icyuma cyagutse gike-nikel yo gucukura hamwe na coefficient nkeya yo kwaguka mu ntera ya 20-100 ° C. Amavuta afite coefficient nkeya yo kwaguka mu ntera ya 20-100 ° C. Umuti ukwiranye no gukoreshwa nkibikoresho bifunga ibikoresho bya vacuum yamashanyarazi.

4J29 ikoreshwa cyane cyane mubice byumuyagankuba nkumuyoboro w’ibyuka bihumanya ikirere, imiyoboro ya oscillator, imiyoboro yo gutwika, magnetron, transistor, ibyuma bifunze, relay, imiyoboro ihuriweho, insinga ziyobora, chassis, ibishishwa, uduce, nibindi, gufunga ibirahuri, mugukoresha ibirahuri hamwe nuruvange bigomba gukoreshwa kugirango habeho ubushyuhe bwo kwaguka, hakurikijwe ikoreshwa ryubushyuhe bukwiye kandi bukwiye gukoreshwa kugirango habeho ubushyuhe buke kandi bikurikizwe nubushakashatsi bwakoreshejwe kugirango ubushyuhe bugabanuke mubushuhe bukwiye Kuvura kugirango umenye neza ko ibikoresho bifite imiterere-yimbitse. Ibikoresho bifite ishusho nziza yo gushushanya, mugihe ukoresheje ibikoresho byo guhimba bigomba kugeragezwa cyane kugirango ikirere gikomere.

4J32 ikwiranye nibikoresho bitandukanye, ibice byibikoresho, bishyushye bimetallic pasive layer na resonance cavities bisaba guhagarara neza.