Cr20 ni80 nickel chrome heating resistance wire ni20cr80 heating wire
Alloy Nomenclature Performance | |
Ni80Cr20 | |
Ni70Cr30 | |
Ni60Cr15 | |
Ni35Cr20 | Ni30Cr20 |
Main Chemical composition | |
Ni | |
Rest | |
Rest | |
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 | |
Rest | |
Rest | Rest |
Max. continuous service temp. of element(ºC) | |
1200 | |
1250 | |
1150 | |
1100 | 1100 |
Resistivity at 20ºC (μΩ·m) | |
1.09 | |
1.18 | |
1.12 | |
1.0 | 1.04 |
Density(g/cm3) | |
8.40 | |
8.10 | |
8.20 | |
7.90 | 7.90 |
Thermal conductivity (KJ/m·h·ºC) | |
60.3 | |
45.2 | |
45.2 | |
43.8 | 43.8 |
Coefficient of lines expansion(α×10-6/ºC) | |
18.0 | |
17.0 | |
17.0 | |
19.0 | 19.0 |
Melting point approx.( ºC) | |
1400 | |
1380 | |
1390 | |
1390 | 1390 |
Elongation at rupture(%) | |
>20 | |
>20 | |
>20 | |
>20 | >20 |
Micrographic structure | |
austenite | |
austenite | |
austenite | |
austenite | austenite |
Magnetic properties | |
nonmagnetic | |
nonmagnetic | |
Weak magnetic | |
Weak magnetic | Weak magnetic |
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