Iron
Fe
Bal.
Chromium
Cr
21.0~23.0%
Aluminium
Al
5.0~7.0%
Silicon
Si
≤0.6%
Nickel
Ni
≤0.60%
Manganese
Mn
≤0.70%
Carbon
C
≤0.05%
Sulphur
S
≤0.025%
Phosphorus
P
≤0.025%
Niobium
Nb
0.5%
0Cr21Al6Nb heating alloy is composed of iron, chromium and aluminum with high resistivity, low resistivity, high working temperature, good oxidation resistance at high temperature, and the highest applicable temperature is up to 1250 degrees. The alloy is mainly used in industrial electric furnaces, household electric heating components and far infrared equipment components.
0Cr21Al6Nb Mechanical performance (1.0mm)
| Yield Strength |
tensile strength |
Elongation |
| Mpa |
Mpa |
% |
| 550 |
725 |
22 |
0Cr21Al6Nb Physical properties
| Density |
Resistivity at 20℃ |
Thermal conductivity at 20°C |
Specific heat capacity
at 20℃ |
Melting point |
Maximum use temperature of the element |
Magnetic |
| (g/cm3) |
(Ωmm2/m) |
(WmK) |
J/gK |
(℃) |
(℃) |
|
| 7.1 |
1.45 |
13 |
0.49 |
1510 |
1350 |
Non |
| Thermal expansion coefficient |
| Temperature |
Average linear expansion coefficientx10-6/℃ |
| 20 ℃- 1000℃ |
16 |
0Cr21Al6Nb Resistance temperature factor (correction factor)
| 20℃ |
100℃ |
200℃ |
300℃ |
400℃ |
500℃ |
700℃ |
800℃ |
900℃ |
1000℃ |
1100℃ |
1200℃ |
| 1 |
0.997 |
0.996 |
0.994 |
0.991 |
0.990 |
0.990 |
0.990 |
0.990 |
0.990 |
0.990 |
0.990 |
Supply form and specification
| Alloy grade |
Form |
Specification |
| 0Cr21Al6Nb |
Wire |
Diameter=0.1mm~8mm |
| 0Cr21Al6Nb |
Flat wire |
Width=1~5mm |
Thick=0.08~2mm |
| 0Cr21Al6Nb |
Strip |
width=8~250mm |
Thick=0.1~3.0mm |
| 0Cr21Al6Nb |
Foil |
width=6~120mm |
Thick=0.01~0.1mm |
| 0Cr21Al6Nb |
Bar |
Diameter=8~100mm |
Long=50~1000 |
