Table of Contents
Supra 50
| Stan Zurek, Supra 50, Encyclopedia Magnetica, http://www.e-magnetica.pl/doku.php/supra_50 |
Supra 50 - a magnetically soft material, Ni-Fe alloy.
The name “Supra 50” is a registered trademark of Aperam Alloys Imphy.1)
The name refers to the content of nickel (around 50%) which is between 46-49% (typically 48%) and the balance is iron (52% typ.)2)
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High permeability of the material achieved by secondary recrystallisation.
There are several types in the Supra 50 family:3)4)5)
- SP 510
- Supra 50
- Supra 50 G
- Supra 50 GSP
- Supra 50 SP
- Supra 50 T (Supra 50 t)
Material types
Supra 50
Supra 50 is available in bars from 4 mm diameter to around 500 mm. These bars can be cold, hot rolled or forged, depending on the thickness.6) Thinner bars are ready for machining, whereas the thicker bars can be machined or used for other hot transformation.7)
Supra 50SP
Supra 50SP is provided in sheets (coiled for transport) with thickness between 0.1 mm to 3.5 mm.8)
The material is used for instance for manufacturing of magnetic and electromagnetic shielding.9)
Supra 50T
The letter T or t denotes a material with the same chemical composition, but in a form of thin sheet from 0.08 mm to 0.34 mm.10) It can be used for making shaped laminations or winding of toroidal cores.
Properties of Supra 50SP
| Magnetic properties | |
|---|---|
| Typical values measured on ring samples 0.35 mm thick after heat treatment at 1150°C in pure and dry hydrogen, with non-critical cooling rate (50-100°C/hour)12) | |
| Saturation induction (at 800 A/m) | 1.50 T |
| Coercive force | 2.8 A/m |
| Maximum permeability (μmax, DC) | 200 000 |
| Permeability (μ5z, 400 Hz) | 12 500 |
| Power loss (1.0 T, 400 Hz) | 0.15 W/kg |
| Other properties13) | |
| Specific density | 8200 kg/m³ |
| Electrical resistivity | 4.5·10-7 Ω·m |
| Curie temperature | 450°C |
| Melting tempeature | 1425°C |
| Thermal expansion | 8·10-6 1/K¹ |
| Thermal conduction | 13 W/(K·m) |
| Specific heat | 500 J/(kg·K) |
| Mechanical properties14) | ||
|---|---|---|
| annealed | hard | |
| Hardness | 140 HV | 250 HV |
| Grain size | 9 | - |
| Tensile strength | 500 MPa | 700 MPa |
| Yield strength | 280 MPa | 1030 MPa |
| Elongation | 35% | 3% |
Data sheets
| Datasheets |
|---|
| Supra 50 |
Magnetic properties
The magnetic properties of Supra 50SP were measured by following the method of IEC 60404-6.
Supra 50, measured data: B, H , permeability and power loss
by S. Zurek, E. Magnetica, CC-BY-3.0