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Nickel-Chromium Alloy - Cr30Ni70
Common Names: Nikrothal 70, Chromel 70/30, N7, Hytemco, HAI-NiCr 70, Balco, Tophet 30, Resistohm 70, Cronix 70, Stablohm 710
Chemical Composition:
| C |
P |
S |
Mn |
Si |
Cr |
Ni |
Al |
Fe |
| ≤ |
| 0.08 |
0.02 |
0.015 |
0.6 |
0.75~1.6 |
28~31 |
Bal. |
≤0.5 |
≤1.0 |
Properties:
| Max. continuous service Temp. |
1250ºC |
| Resistivity at 20ºC |
1.18±0.05 μΩ·m |
| Density |
8.10
g/cm3 |
| Thermal conductivity |
45.2
KJ/m·h·ºC |
| Coefficient of linear expansion |
17.0
α×10-6/ºC |
| Specific heat |
0.461
J/g·ºC |
| Approx.
melting point |
1380ºC |
| Elongation |
≥20% |
| Accelerated life |
≥50h/1250ºC |
| Micrographic structure |
austenite |
| Magnetic properties |
nonmagnetic |