Ni90Cr10 est mixtura austenitica niccoli-chromii (mixtura NiCr) ad usum temperaturis usque ad 1200°C (2190°F). Haec mixtura insignitur magna resistentia, bona resistentia oxidationis, et optima stabilitate formae. Post usum ductilitatem bonam et excellentem soudabilitatem habet.
Ni90Cr10 ad elementa calefactionis electrica in apparatibus domesticis et caminis industrialibus adhibetur. Usus typici sunt ferra plana, machinae ad vestes ad vestes adstringendas, calefactores aquae, formae plasticae ad formam fingendam, ferra ad soldandum, elementa tubularia metallica et elementa cartuchosa.
Ob proprietates adhaesionis optimas oxidi superficialis, Ni90C10 vitam utilem superiorem praebet comparatione cum mixturis niccoli-chromii aemulis.
Materia spectaculi | Ni90Cr10 | Ni80Cr20 | Ni70Cr30 | Ni60Cr15 | Ni35Cr20 | Ni30Cr20 | |
Compositio | Ni | 90 | Requies | Requies | 55.0~61.0 | 34.0~37.0 | 30.0~34.0 |
Cr | 10 | 20.0~23.0 | 28.0~31.0 | 15.0~18.0 | 18.0~21.0 | 18.0~21.0 | |
Fe | ≤1.0 | ≤1.0 | Requies | Requies | Requies | ||
Temperatura maxima ºC | 1300 | 1200 | 1250 | 1150 | 1100 | 1100 | |
Punctum liquefactionis °C | 1400 | 1400 | 1380 | 1390 | 1390 | 1390 | |
Densitas g/cm³ | 8.7 | 8.4 | 8.1 | 8.2 | 7.9 | 7.9 | |
Resistivitas ad 20ºC ((μΩ·m) | 1.09±0.05 | 1.18±0.05 | 1.12±0.05 | 1.00±0.05 | 1.04±0.05 | ||
Elongatio ad rupturam | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | |
Calor specificus J/g.ºC | 0.44 | 0.461 | 0.494 | 0.5 | 0.5 | ||
Conductivitas thermalis KJ/m.hºC | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 | ||
Coefficiens expansionis linearum a×10⁻⁶/ (20~1000ºC) | 18 | 17 | 17 | 19 | 19 | ||
Structura micrographica | Austenita | Austenita | Austenita | Austenita | Austenita | ||
Proprietates magneticae | Non magneticus | Non magneticus | Non magneticus | Magnetis debilis | Magnetis debilis |
magnitudo:
Diametros exterior: 0.3-8.0mm,
Fila Resistentiae | ||
RW30 | W.Nr 1.4864 | Nickel 37%, Chrome 18%, Ferrum 45% |
RW41 | UNS N07041 | Nickel 50%, Chrome 19%, Cobalt 11%, Molybdenum 10%, Titanium 3% |
RW45 | W.Nr 2.0842 | Nickel 45%, Cuprum 55% |
RW60 | W.Nr 2.4867 | Nickel 60%, Chrome 16%, Ferrum 24% |
RW60 | UNS NO6004 | Nickel 60%, Chrome 16%, Ferrum 24% |
RW80 | W.Nr 2.4869 | Nickel 80%, Chrome 20% |
RW80 | UNS NO6003 | Nickel 80%, Chrome 20% |
RW125 | W.Nr 1.4725 | Ferrum BAL, Chromium 19%, Aluminium 3% |
RW145 | W.Nr 1.4767 | Ferrum BAL, Chromium 20%, Aluminium 5% |
RW155 | Ferrum BAL, Chromium 27%, Aluminium 7%, Molybdenum 2% |
CHROMEL contra ALUMEL in atmosphaeris oxidantibus, inertibus vel siccis reducentibus adhibetur. Expositio ad vacuum ad breves tempora limitata. Ab atmosphaeris sulphureis et leviter oxidantibus protegendum est. Fidile et accuratum ad altas temperaturas. Chromel: Chromel est mixtura metallica circiter 90% niccoli et 10% chromii. Adhibetur in fabricatione conductorum positivorum thermoparium ANSI Typi E et Typi K, instrumentorum ad temperaturam metiendam ex duobus conductoribus diversis constantium.
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