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Properties | Item | Data | Remarks |
---|---|---|---|
Magnetic | Saturation polarization | 0.74 T | 20°C |
Saturation magnetostriction | ca. 1 ppm | ||
Curie temperature | 700°F (370°C) | ||
AC Magnetic | Initial permeability(60Hz) at B=40G [μ(40G)] | 100,000 | |
μ at H= 4mA/cm [μ4] | 250,000 | ||
Max. permeability [μmax] | 350,000 | ||
Coercivity [Hc] | 20 mOe (15 mA/cm) | ||
Saturation induction, Magnetic flux density [Bs] | 7,400 G (0.74 T) | ||
Physical | Mass density | 8.7 g/cm3 | ESQ-612-38 |
Electrical resistivity | 0.6 x 10-6 Ohm m | ||
Coefficient of thermal expansion | 13.5 x 10-6 K-1 | 20~100°C | |
Mechanical | Hardness (HV) | 270~420 | |
Tensile strength | 1280 N/mm2 | > 0.2mm | |
Yield strength | 1230 N/mm2 | ||
Elongation | 1~3 % |
Properties | PB | PC |
---|---|---|
Nickel | 49% | 80% |
Mass density | 8.18 | 8.7 |
Electrical resistivity | 480μΩ·mm | 620μΩ·mm |
Curie temperature | 449℃ | 370℃ |
Magnetic flux density | 15,000Gauss | 7,400Gauss |
Coercivity | 0.1 Oe | 0.02 Oe |
Max. permeability (AC) | 100,000 | 350,000 |
It is most effective to enclose the source or affected parts of the magnetic field shield completely. Still, the shielding effect can be obtained even if only the specific part is covered or the cover type is installed, as shown above.
When you wrap a cylindrical shape or cover a rectangular housing, be careful not to make a gap between the joint and between the body and the lid.
* Note: Due to inherent Permalloy properties, loss of properties may result if direct impact is affected during processing or transport.
Cover the magnetic field parts with permalloy foil, or protect the sensor from external magnetic fields by inserting the sensor control in the permalloy case.
Equipment | Effect | Standard |
---|---|---|
SEM / E-BEAM | Scanning lines from influence of external magnetic wave | 2mG |
TEM | The higher the magnification, the more sensitive to magnetic wave | 0.2mG~1mG |
SQUID | Biomedical ultra-weak self-diagnosis device | |
MRI | Malfunction because of external D.C magnetic wave | 2mG |
Number | Code | Example | |
---|---|---|---|
(1) | Product Code | SPM | |
(2) | Thickness (T) | 010: 0.10mm, 035: 0.35mm |