Safeni 52 (Strip steel)
Datasheet updated 2012-08-01 09:50:09 (supersedes all previous editions)
Safeni 52 is a soft magnetic iron-nickel alloy with high magnetic permeability, low coercive force, a low content of non-metallic inclusions and thermal expansion properties which make it suitable for glass-sealing applications.
Available in strip, round wire and profile forms, Safeni 52 can be used in many applications requiring superior surface properties, accurately defined thermal expansion and high magnetic permeability.
Safeni 52 is particularly suitable for glass-to-metal seals and has its most important application in reed switches. It is also used for thermostats in industrial applications, transistors, voltage regulators, timing devices, temperature sensitive resistors and high frequency relays.
Chemical composition (nominal), %
| Ni | Fe |
|---|---|
| 51 | Bal. |
Mechanical properties
| Proof strength, Rp0.2 *, MPa | Proof strength, Rp0.2 *, ksi | Tensile strength, Rm, MPa | Tensile strength, Rm, ksi | Hardness, HV | |
|---|---|---|---|---|---|
| Annealed | 290 | 42 | 570 | 83 | 160 |
| Cold worked | 910 | 132 | 950 | 138 | 270 |
On request, Safeni 52 can be supplied with other properties.
* Rp0.2 corresponds to 0.2% offset yield strength.
Physical properties
| Metric | Imperial | |
|---|---|---|
| Density | 8.3 g/cm3 | 0.30 lb/in3 |
| Specific heat capacity | 460 J/kg °C | 0.11 Btu/lb °F |
| Resistivity | 0.37 μΩm | 14.6 μΩinch |
| Metric | Imperial | |
|---|---|---|
| Curie point | 520°C | 970°F |
| Melting point | 1435°C | 2615°F |
| Temperature, °C | per °C | Temperature, °F | per °F |
|---|---|---|---|
| 30-100 | 10.4 | 86-200 | 5.8 |
| 30-200 | 10.4 | 86-400 | 5.8 |
| 30-300 | 10.3 | 86-600 | 5.7 |
| 30-400 | 10.2 | 86-800 | 5.7 |
| 30-500 | 10.1 | 86-1000 | 5.8 |
| 30-600 | 10.8 | 86-1100 | 6.0 |
Magnetic properties
| Coercive field strength, Hc | 30 A/m |
|---|---|
| Remanent flux density, Br | 1.0 T (Wb/m2) |
| Saturation induction, Bs | 1.5 T (Wb/m2) |
| Max permeability, µr,max | 30000 |
Forms of supply
Wire is supplied cold drawn or annealed, with bright or ground surface, in coils, on spools or in straightened lengths between 2 and 4 m, depending on diameter.
| Diameter | 0.10 – 12.0 mm (0.004 – 0.472 inch) |
|---|
Other sizes and lengths can be supplied on request. For more detailed information please contact Sandvik.
Disclaimer: Recommendations are for guidance only, and the suitability of a material for a specific application can be confirmed only when we know the actual service conditions. Continuous development may necessitate changes in technical data without notice. This datasheet is only valid for Sandvik materials.
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