N6 | Chromel C, Ni 60, N6, HAI-NiCr 60, Tophet C, Resistohm 60, Cronifer II, |
Elektroloj, nikrom, zlitina C, Ni 6, MWS-675, Stablohm 675 | |
N7 | Ni 70, Chromel 70/30, N7, Hytemco, HAI-NiCr 70, Balco, Tophet 30, |
Resistohm 70, Cronix 70, Stablohm 710 | |
N8 | Chromel A, Ni 80, N8, nikrom V, HAI-NiCr 80, Tophet A, Resistohm |
80, Cronix 80, Protoloy, Ni 8, Alloy A, MWS-650, Stablohm 650 |
Opis
Zlitina | Standardna konstrukcija pramena, mm | Upor,Ω/m | Nominalni premer pramena, mm | Meter na kilogram |
NiCr 80/20 | 18×0,544+1×0,574 | 0,252-0,278 | 2.67 | 26 |
NiCr 80/20 | 19×0,61 | 0,205-0,250 | 3.05 | |
NiCr 80/20 | 18×0,523+1×0,574 | 0,271-0,299 | 2.67 | 30 |
NiCr 80/20 | 19×0,574 | 0,227-0,251 | 2.87 | 25 |
NiCr 80/20 | 36×0,385+1×0,45 | 0,265-0,293 | 2.76 | 26 |
NiCr 60/15 | 19×0,508 | 0,286-0,318 | 2.54 | |
NiCr 60/15 | 18×0,523+1×0,574 | 0,276-0,305 | 2.76 | 30 |
Ni | 19×0,574 | 0,019-0,021 | 2.87 | 21 |
Podrobnosti
Propertes/Razred | Cr20Ni80 | Cr30Ni70 | Cr15Ni60 | Cr20Ni35 | Cr20Ni30 | |
Glavna kemična sestava | Ni | Počitek | Počitek | 55,0-61,0 | 34,0-37,0 | 30,0-34,0 |
Cr | 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 | Počitek | Počitek | Počitek | |
maks. stalna delovna temp. elementa | 1200 | 1250 | 1150 | 1100 | 1100 | |
Upornost pri 20oC (μ Ω · m) | 1.09 | 1.18 | 1.12 | 1.04 | 1.04 | |
Gostota (g/cm3) | 8.4 | 8.1 | 8.2 | 7.9 | 7.9 | |
Toplotna prevodnost (KJ/m·h· oC) | 60.3 | 45.2 | 45.2 | 43.8 | 43.8 | |
Koeficient razteznosti linij (α × 10-6/oC) | 18 | 17 | 17 | 19 | 19 | |
Tališče (pribl. )( oC) | 1400 | 1380 | 1390 | 1390 | 1390 | |
Raztezek ob pretrganju (%) | > 20 | > 20 | > 20 | > 20 | > 20 | |
Mikrografska struktura | avstenit | avstenit | avstenit | avstenit | avstenit | |
Magnetne lastnosti | nemagnetna | nemagnetna | nemagnetna | nemagnetna | nemagnetna |