NiCr 8020 (2.4869) 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.
Gradus | Ni80Cr20 | Ni70Cr30 | Ni60Cr23 | Ni60Cr15 | Ni35Cr20 | Karma | Evanohm | |
Compositio nominalis% | Ni | Bal | Bal | 58.0-63.0 | 55.0-61.0 | 34.0-37.0 | Bal | Bal |
Cr | 20.0-23.0 | 28.0-31.0 | 21.0-25.0 | 15.0-18.0 | 18.0-21.0 | 19.0-21.5 | 19.0-21.5 | |
Fe | ≤1.0 | ≤1.0 | Bal | Bal | Bal | 2.0-3.0 | – | |
Al1.0-1.7 Ti0.3-0.5 | Al2.7-3.2 Mn0.5-1.5 | Al2.7-3.2 Cu2.0-3.0 Mn0.5-1.5 | ||||||
Temperatura maxima operandi (°C) | 1200 | 1250 | 1150 | 1150 | 1100 | trecenti | quadringenti | |
Resistivitas (Ω/cmf, 20℃) | 1.09 | 1.18 | 1.21 | 1.11 | 1.04 | 1.33 | 1.33 | |
Resistivitas (µΩ/m, 60°F) | DCLV | DCCIV | DCCXXVII | DCCLXVIII | DCXXVI | DCCC | DCCC | |
Densitas (g/cm³) | 8.4 | 8.1 | 8.4 | 8.2 | 7.9 | 8.1 | 8.1 | |
Conductivitas Thermalis (KJ/m·h·℃) | 60.3 | 45.2 | 45.2 | 45.2 | 43.8 | 46.0 | 46.0 | |
Coefficiens Expansionis Linearis (×10¯)620-1000℃ (/℃) | 18.0 | 17.0 | 17.0 | 17.0 | 19.0 | - | - | |
Punctum Liquefactionis (℃) | 1400 | 1380 | 1370 | 1390 | 1390 | 1400 | 1400 | |
Duritia (Hv) | CLXXX | CLXXXV | CLXXXV | CLXXX | CLXXX | CLXXX | CLXXX | |
Robur tensile (N/mm)2 ) | DCCCL | DCCCLXXV | DCCC | DCCCL | DCCCL | DCCLXXX | DCCLXXX | |
Elongatio (%) | ≥20 | ≥20 | ≥20 | ≥20 | ≥20 | 10-20 | 10-20 | |
Structura Micrographica | austenita | austenita | austenita | austenita | austenita | austenita | austenita | |
Proprietas Magnetica | Non | Non | Non | Paululum | Non | Non | Non | |
Vita Celeris (h/℃) | ≥81/1200 | ≥50/1250 | ≥81/1200 | ≥81/1200 | ≥81/1200 | - | - |