JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
Jiangsu Mittel Steel Industrial Limited Supply all kinds of Stainless Steel Sheet/Plate/Coil/Round ,Flat ,Angle Bar/Stainless steel Seamless pipe /welded pipe /Elbow/Flange /Galvanized Steel sheet
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1J50 is a Ni-Fe soft magnetic alloy, and its main compositions are about 50% Ni, 48% Fe and other micro-elements. This alloy is characterized by high magnetic permeability, higher saturation induction density, etc. As a soft magnetic material used in alternating current, vortex and loss are induced inside the material due to the alternating magnetization. The smaller the resistivity and the greater the thickness of the alloy, and the higher frequency under the alternating magnetic field, the greater the eddy loss and the more the decrease of the magnetic performance. So, the material must be manufactured as thin sheet (strip) and coated with insulation layer on its surface. Or use certain method to form oxide insulation layer on the surface, and such alloys usually adopt magnesium oxide elecrophoretic coating.
Type of supply
| Style | Size | ||
| Wire | D= 0.1~8mm | ||
| Strip | W= 8~390mm | T= 0.3-3mm | |
| Foil | W= 10~100mm | T= 0.01~0.1 | |
| Rod | Dia= 8~100mm | L= 50~6000 | |
1J50 magnetic alloy, a Ni-Fe soft magnetic alloy, mainly applies to high magnetic conductivity yoke iron, sensitive relay, low loss micromotor, low power transformer, pulse transformer, transistor switch, magnetic amplifier, magnetic modulator, sensitive signal input and output transformer, magnetic sensor of aviation magnetic heading instrument, magnetic sensitive element of magnetic measuring instrument, stator and movable plate of precision electric meter, magnetic shielding and magnetic temperature compensating elements.
Chemical composition (%)| Ni | 49.0~51.0 | Fe | Bal. | Mn | 0.3~0.6 | Si | 0.15~0.3 |
| Mo | - | Cu | ≤0.2 | S | ≤0.02 | ||
| C | ≤0.03 | P | ≤0.02 |
Mechanical property
| Yield strength | Tensile Strength | Elongation |
| Mpa | Mpa | % |
| 685 | 780 | 3~35 |
| Density (g/cm3) | 8.2 |
| Resistivity under 20℃(Ωmm2/m) | 0.45 |
| Linear expansion coefficient (20℃-200℃) X10-6/℃ | 9.2 |
| Saturation magnetostrictive coefficient, λθ/ 10-6 | 25 |
| Curie point, Tc/ ℃ | 500 |
Heat treatment process
| Annealing medium | Dry hydrogen ( dew point is no more than -40℃) or vacuum, with a residual pressure of no more than 0.1Pa |
| Heating temperature and speed | 1100~1150℃ |
| Heat preservation (h) | 3~6 |
| Cooling speed | Be cooled to 600℃ at a speed of 100 ~ 200 ℃/ h, then be quickly cooled to 300℃, discharging from the furnace. |
