Typical applications for 38-7 include use as resistance strip or as a low expansion component in bimetal thermostats, for example in gas and electric stoves. Its low thermal expansion also makes it useful as structural material where low temperature sensitivity is required, for example as frames for measuring systems, or for parts in mechanical watches.
Chemical composition
| Mn % | Ni % | Cr % | Fe % | |
|---|---|---|---|---|
| Nominal composition | 0.40 | 38 | 6.6 | Bal. |
Mechanical properties
Hardness, Vickers: 120
Physical properties
| Density g/cm3 | 8.1 |
|---|---|
| Electrical resistivity at 20°C, Ω mm2/m | 0.95 |
| Temperature range | Thermal Expansion x 10-6/ K |
|---|---|
| 30 - 130 °C | 6.9 |