Iron
Fe
Bal.
Chromium
Cr
19.0~22.0%
Aluminium
Al
5.0~7.0%
Silicon
Si
≤1.0%
Nickel
Ni
≤0.60%
Manganese
Mn
≤0.70%
Carbon
C
≤0.06%
Sulphur
S
≤0.025%
Phosphorus
P
≤0.025%
0Cr21Al6 resistance 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 to make ceramic electric cookers, industrial furnaces, various electric heating elements and automobile exhaust catalysts.
Mechanical performance (1.0mm)
Yield Strength |
Tensile strength |
Elongation |
Mpa |
Mpa |
% |
≥520 |
≥720 |
≥20 |
Physical properties
Density (g/cm3) |
7.16 |
Resistivity at 20℃(Ωmm2/m) |
1.42 |
Thermal conductivity at 20℃ (WmK) |
13 |
Specific heat capacity at 20℃(J/gK) |
13 |
Melting point (℃) |
1500 |
Maximum use temperature(℃) |
1250 |
Magnetic |
Magnetic |
Thermal expansion coefficient |
Temperature |
Average linear expansion coefficient x10-6/℃ |
20 ℃- 1000℃ |
14.7 |
Resistance temperature factor (correction factor)
20℃ |
100℃ |
200℃ |
300℃ |
400℃ |
500℃ |
600℃ |
800℃ |
900℃ |
1000℃ |
1100℃ |
1200℃ |
1300℃ |
1 |
1 |
1.002 |
1.006 |
1.011 |
1.02 |
1.037 |
1.046 |
1.049 |
1.052 |
1.055 |
1.058 |
- |
Supply form and specification
Alloy name |
Form |
Specification |
0Cr21Al6 |
Wire |
D=0.1mm~8mm |
0Cr21Al6 |
Flat |
W=1~5mm |
T=0.08~2mm |
0Cr21Al6 |
Strip |
W=8~250mm |
T=0.1~3.0mm |
0Cr21Al6 |
Foil |
W=6~120mm |
T=0.01~0.1mm |
0Cr21Al6 |
Bar |
D=8~100mm |
L=50~1000mm |