Expansion alloy 1J79, also known as permalloy, is a nickel-iron alloy with high magnetic permeability and low coercivity. The alloy is widely used in electronic and electrical equipment, especially in environments where magnetic shielding is required, such as transformers, sensors and magnetic amplifiers. With its excellent magnetic properties and low expansion characteristics, 1J79 alloy performs well in high-precision and high-sensitivity equipment.
expansion alloy 1J79
1 J79 is a high permeability of iron-nickel soft magnetic alloy, mainly used in the manufacture of transformers, magnetic amplifiers, sensors and magnetic shielding devices. Internationally, 1J79 has the following approximate grades:
| Countries/Regions | Approximate Grade | Remarks |
|---|---|---|
| United States | Permalloy 80 | high permeability soft magnetic alloy |
| United States | HyMu 80 | high permeability soft magnetic alloy |
| Germany | Vacoperm 80 | high permeability soft magnetic alloy |
| Japan | PC | high permeability soft magnetic alloy |
| France | Supermumetal | high permeability soft magnetic alloy |
| Russia | 79 НМ | high permeability soft magnetic alloy |
| England | Mumetal | high permeability soft magnetic alloy |
these grades are similar to 1J79 in chemical composition and magnetic properties, and are mainly used in applications requiring high permeability and low coercivity.
chemical composition
1 J79 alloy is as follows:
-Nickel (Ni):79%
-Iron (Fe): balance
-Other elements: trace amounts of molybdenum (Mo), manganese (Mn) and silicon (Si)
physical properties
-Density: 8.7 g/cm & sup3;
-Curie temperature: 450°C
-Permeability: Under low field conditions, the initial permeability is as high as 80,000 or more
mechanical properties
-Tensile strength: about 450 MPa
-Yield strength: about 280 MPa
-Ductility: Good, suitable for cold working and forming
-Hardness: HV 150 - 200
Application areas
-magnetic shielding: used in precision electronic equipment to isolate external magnetic field interference.
-Transformer: suitable for the core material of high frequency transformer and transformer.
-sensor and magnetic amplifier: used for magnetic sensitive components to ensure high-precision signal transmission.
-Electronic components: used to manufacture high-sensitivity electromagnetic relays and magnetic heads.
Supply Specifications
-Shape: bar, plate, strip, wire, etc.
-size: customized according to customer needs
