Introductio ad mixturam Nickel et Chromium:
Mixtura Nickel-Chromii magnam resistivitatem, bonas proprietates anti-oxidationis, firmitatem temperaturae altae, stabilitatem formae optimam et facultatem suturae habet. Late adhibetur in materiis elementorum calefactionis electricae, resistoribus, furnis industrialibus, et cetera.
Descriptio accurata:
Gradus: NiCr 80/20 etiam appellatur Chromel A, N8, Nichrome V, HAI-NiCr 80, Tophet A, Resistohm 80, Cronix 80, Protoloy, Alloy A, MWS-650, Stablohm 650, NCHW1.
Alia quoque genera filorum resistentiae nichromatici, ut NiCr 70/30, NiCr 60/15, NiCr 60/23, NiCr 37/18, NiCr 35/20, NiCr 35/20, NiCr 25/20, Karm, producimus.
Materia perfunctionis | Cr10Ni90 | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 | |
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 |
Productum: Lamina Nichromatica/Taenia Nichromatica/Lamina Nichromatica/Lamina Nichromatica
Gradus: Ni80Cr20/Resistohm 80/Chromel A
Compositio Chemica: Nickel 80%, Chrome 20%
Resistivitas: 1.09 ohm mm²/m
Status: Splendens, Recoctum, Mollis
Superficies: BA, 2B, polita
Dimensiones: Latitudo 1~470mm, Crassitudo 0.005mm~7mm
Producimus etiam NiCr 60/15, NiCr 38/17, NiCr 70/30, NiCr AA, NiCr 60/23, NiFe80, NiFe50, NiFe42, NiFe36, cetera.
150 0000 2421