Cheap price nichrome ni80cr20 heating resistance wire ni80
Ni80Cr20 Ribbon: Width 5~0.5mm, thickness 0.01-2mm
Grade: Ni80Cr20, Ni70Cr30, Ni60Cr16, Ni60Cr23, Ni35Cr20Fe
Nichrome's metallurgical structure confers them a very good plasticity when cold.
In addition of a relatively high specific resistance, Ni-Cr alloys join all the necessary properties for good performances in use of furnaces: Resistance to oxidation (they are not sensitive to aggressions of humid air).
Low embrittlement at high temperature. Good plasticity-Easier to give them a shape compared with FeCrAl (lower mechanical characteristics allow indeed a good control of elasticity of the product during shaping (coiling, folding, drawing).
Good resistance to creeping (more important than ferritic alloys) which is important during conception of a resistance presenting big heights of waves.
Chemical Composition and Main Properties of Nichrome |
Properties \ Grade |
Ni80Cr20 |
Ni70Cr30 |
Ni60Cr15 |
Ni35Cr20 |
Ni30Cr20 |
Main Chemical Composition |
Ni |
Balance |
Balance |
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 |
Balance |
Balance |
Balance |
Max Continuous Service Temperature(oC) |
1200 |
1250 |
1150 |
1100 |
1100 |
Resisivity 20oC (Ω mm2/m) |
1.09 |
1.18 |
1.12 |
1.04 |
1.04 |
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 Thermal Expansion(α × 10-6/oC) |
18 |
17 |
17 |
19 |
19 |
Melting Point( oC) |
1400 |
1380 |
1390 |
1390 |
1390 |
Elongation(%) |
> 20 |
> 20 |
> 20 |
> 20 |
> 20 |
Micrographic Structure |
austenite |
austenite |
austenite |
austenite |
austenite |
Magnetic Property |
nonmagnetic |
nonmagnetic |
nonmagnetic |
Weak magnetic |
Weak magnetic |