Product Description
Cr30Ni70 is an ideal material, it has good ductility,workability and weldability under high temperature and seismic strength.
Nickel-chromium alloy with high and stable resistance, corrosion resistance, surface oxidation resistance, excellent coil-forming ability.
Size dimension range:
Wire: 0.01-10mm
Ribbons: 0.05*0.2-2.0*6.0mm
Strip: 0.05*5.0-5.0*250mm
NiCr series: Cr20Ni80, Cr30Ni70, Cr15Ni60, Cr20Ni35, Cr20Ni30
| Alloy Nomenclature Performance |
Cr20Ni80 |
Cr30Ni70 |
Cr15Ni60 |
Cr20Ni35 |
Cr20Ni30 |
| 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 |
| Meltiing point ℃ |
1400 |
1380 |
1390 |
1390 |
1390 |
| Resistivity at 20ºC (μΩ·m) |
1.09±0.05 |
1.18±0.05 |
1.12±0.05 |
1.00±0.05 |
1.04±0.05 |
| Density(g/cm3) |
8.4 |
8.1 |
8.2 |
7.9 |
7.9 |
| 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 |
17 |
17 |
19 |
19 |
| 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 |
Nonmagnetic |
Weak magnetic |
Weak magnetic |