Ihe ndọta dị nro1J50 / FeNi 50/ Ni 50:
A na-ejikarị ya eme ihe n'akụkụ abụọ maka mgbanwe ike na nhazi ozi
N'ụlọ ọrụ ike, ọkachasị n'ọhịa magnetik dị elu, enwere nnukwu ndọta magnetik na obere mfu isi nke alloy ahụ. N'ụlọ ọrụ eletrọnịkị, ọkachasị na alloy dị ala ma ọ bụ nke ọkara nwere nnukwu ikike ndọta magnetik na obere ike mmanye. N'oge dị elu, a ga-eme ya na mpempe akwụkwọ ma ọ bụ alloy dị gịrịgịrị. A na-ejikarị mpempe akwụkwọ ma ọ bụ mpempe akwụkwọ mee ya.
Ihe ndọta dị nro n'ọnọdụ ojiji, n'ihi mgbanwe nke magnet eddy currents na-akpali n'ime ihe ahụ, na-ebute mfu, obere iguzogide nke alloy ahụ, ka ọkpụrụkpụ ya na-abawanye, ka ugboro ole magnetik na-agbanwe agbanwe na-abawanye, mfu nke eddy current na-abawanye, magnetik na-ebelatakwa karịa. Maka nke a, a ga-eme ka ihe ahụ dị gịrịgịrị (teepu), ma kpuchie elu ya na ihe mkpuchi mkpuchi, ma ọ bụ iji ụfọdụ ụzọ mee ka ọ bụrụ oyi akwa mkpuchi oxide, alloys ndị a na-ejikarị magnesium oxide electrophoresis eme ihe.
A na-ejikarị ígwè na nickel eme ihe n'ọtụtụ ebe ndọta, ọkachasị maka ígwè yoke, relay, obere transformers na magnetically protected.
Ihe ndị a bụ nkọwa nke ngwaahịa anyị1J50:
| Ọkwa | C | P | S | Cu | Mn | Si | Ni | Cr | Fe |
| 1J50 | 0.03 | 0.020 | 0.020 | 0.20 | 0.30~0.60 | 0.15~0.30 | 49.0~51.0 | — | Bọọl |



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