Nikrothal® 60 ribbon is an austenitic nickel-chromium alloy (NiCr alloy) for use at temperatures up to 1150°C (2100°F). The alloy is characterized by high resistivity, good oxidation resistance and very good form stability. It has good ductility after use and excellent weldability.
Nikrothal® 60 ribbon is used in electric heating element material in domestic appliances. Typical applications are metal sheathed tubular elements used in, for example, hot plates, grills, toaster ovens and storage heaters. The alloys is also used for suspended coils in air heaters in clothes dryers, fan heaters, hand dryers.
Chemical composition
|
C % |
Si % |
Mn % |
Cr % |
Ni % |
Fe % |
Nominal Composition |
|
|
|
|
|
Bal. |
Min |
- |
1.0 |
- |
14.0 |
57.0 |
|
Max |
0.10 |
1.7 |
1.0 |
18.0 |
60.0 |
|
Mechanical properties
Thickness |
Yield strength |
Tensile strength |
Elongation |
Hardness |
|
Rp0.2 |
Rm |
A |
|
mm |
MPa |
MPa |
% |
Hv |
0.20 |
390 |
760 |
30 |
175 |
Mechanical properties at elevated temperature
Temperature °C |
900 |
MPa |
100 |
Ultimate tensile strength - deformation rate 6.2 x 10 -2 min -1
Creep strength - 1% elongation in 1000 h
Temperature °C |
800 |
1000 |
MPa |
15 |
4 |
Physical properties
Density g/cm3 |
8.20 |
Electrical resistivity at 20°C Ω mm2/m |
1.11 |
Temperature factor of resistivity
Temperature °C | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 | 1000 | 1100 | 1200 |
Ct |
1.02 |
1.04 |
1.05 |
1.06 |
1.08 |
1.09 |
1.09 |
1.10 |
1.10 |
1.11 |
1.12 |
1.13 |
Coefficient of thermal expansion
Temperature °C | Thermal Expansion x 10-6/ K |
20 - 250 |
14 |
20 - 500 |
15 |
20 - 750 |
16 |
20 - 1000 |
17 |
Thermal Conductivity
Temperature °C | 20 | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 | 1000 | 1100 |
W m-1 K-1 |
13 |
13 |
14 |
16 |
17 |
19 |
20 |
22 |
24 |
25 |
25 |
29 |
Specific heat capacity
Temperature °C | 20 | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 | 1000 | 1100 |
kJ kg-1 K-1 |
0.46 |
0.46 |
0.48 |
0.50 |
0.53 |
0.55 |
0.58 |
0.60 |
0.63 |
0.66 |
0.68 |
0.71 |
Melting point °C |
1390 |
Max continuous operating temperature in air °C |
1150 |
Magnetic properties |
The material is slightly magnetic. |
Emissivity - fully oxidized material |
0.88 |