CrAl 13/4
Resistance alloys and resistance heating alloys
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Cr13-Al4 is a ferritic iron-chromium-aluminium alloy with high resistivity suitable for use at temperatures up to 950°C, but we recommend to use this alloy as resistance strip to making resistors.
| C % | Si % | Mn % | Cr % | Al % | Fe % | |
|---|---|---|---|---|---|---|
| Min | – | – | – | 12.0 | 4.0 | Bal. |
| Max | 0.12 | 0.50 | 0.50 | 15.0 | 6.0 |
|
Density g/cm3
|
7.40 |
|
Electrical resistivity at 20°C Ω mm2/m
|
1.25 |
|
Melting point °C
|
1450 |
|
Max continuous operating temperature in air °C
|
950 |
|
Specific heat capacity kJ kg-1 K-1
|
0.490 |
|
Thermal conductivity
|
14.6 |
|
Coefficient of thermal expansion 20-1000 °C 10-6/K |
15.4 |
|
Magnetic property
|
magnetic |
| °C | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 | 1000 |
| Ct | 1.005 | 1.014 | 1.028 | 1.044 | 1.064 | 1.090 | 1.120 | 1.132 | 1.142 | 1.150 |
| Wire | Tensile strength | Elongation |
| Ø | Rm | A |
| mm | MPa | % |
| 3 | 600 | 15 |