CrAl 25/5
Resistance alloys and resistance heating alloys
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Cr25-Al5 is a FeCrAl alloy with high resistivity suitable for use at temperatures up to 1250°C. It has high oxidation resistance, and mainly used to making many types of heating elements used for home appliances as well as in industrial applications.
| C % | Si % | Mn % | Cr % | Al % | Fe % | |
|---|---|---|---|---|---|---|
| Min | – | – | – | 23.5 | 4.5 | Bal. |
| Max | 0.05 | 0.50 | 0.50 | 26.0 | 6.5 |
|
Density g/cm3
|
7.25 |
|
Electrical resistivity at 20°C Ω mm2/m
|
1.42 |
|
Melting point °C
|
1500 |
|
Max continuous operating temperature in air °C
|
1250 |
|
Specific heat capacity kJ kg-1 K-1
|
0.460 |
|
Thermal conductivity
|
16.7 |
|
Coefficient of thermal expansion 20-1000 °C 10-6/K |
15.0 |
|
Magnetic property
|
magnetic |
| °C | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 | 1000 | 1100 | 1200 |
| Ct | 1.002 | 1.005 | 1.008 | 1.013 | 1.021 | 1.030 | 1.038 | 1.040 | 1.042 | 1.044 | 1.046 | 1.047 |
| Wire | Tensile strength | Elongation |
| Ø | Rm | A |
| mm | MPa | % |
| 3 | 600 | 15 |