4J33 uaea u'amea o se sa'o maualalo fa'alautele Fe-Ni-Co mea u'amea ua fuafuaina faapitoa mo hermetic tioata-i-mea fa'amaufa'ailoga talosaga. E tusa ma le 33% nickel ma se vaega itiiti o cobalt, o lenei u'amea e ofoina atu le faʻalauteleina o le vevela e fetaui lelei ma tioata malo ma sima. E masani ona faʻaaogaina i le gaosiga o vacuum tubes, infrared sensors, relays eletise, ma isi masini faʻalagolago.
Nikeli (Ni): ~33%
Cobalt (Co): ~3–5%
Uamea (Fe): Paleni
Isi: Mn, Si, C (su'ega aofa'i)
Fa'alauteleina o le vevela (30–300°C):~5.3 × 10⁻⁶ /°C
Malosi:~8.2 g/cm³
Tete'e eletise:~0.48 μΩ·m
Malosi o le Tensile:≥ 450 MPa
Meatotino maneta:Mageta vaivai, fa'alelei lelei ma mautu
Diamita: 0.02 mm i le 3.0 mm
Lau'ele'ele: Malamalama, leai se oxide
Fa'amomoli: Fa'aili, fa'aili, po'o le umi tipi
Tulaga: Fa'apipi'i pe fa'a'alili
O lapopo'a fa'apitoa ma afifi o lo'o avanoa
E fetaui lelei ma le tioata malo mo le fa'amaufa'amau
Fa'alautele fa'amalo mautu mo vaega sa'o
Lelei le fa'afefeteina ma le mafai ona fa'aulu
Fa'auma mama luga, fa'amama-fesoasoani
Fa'atuatuaina fa'atinoga i le va'alele ma mea fa'aeletoroni
Fa'amaufa'ailoga mata'iata-i-u'amea
Vacuum tubes ma masini infrared
Fale fa'asalalau ma afifi fa'aeletoroni
Fa'amauga masini fa'apitoa
Feso'ota'i ma ta'ita'i va'alele
fa'aili palasitika masani, fa'amau fa'amau po'o fa'apipi'i masani
La'uina e ala i le ea, sami, po'o le fa'aaliga
Taimi ta'ita'i: 7-15 aso faigaluega e fa'atatau ile tele ole oka
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