1J79 is a common iron-nickel-based soft magnetic alloy (permalloy) with high magnetic permeability. It achieves sufficient magnetic permeability and magnetic saturation induction through a reasonable combination of nickel and iron. 1J79 also adds these elements such as molybdenum and copper to increase the resistivity of the material to reduce the eddy current loss after the iron core is made. At the same time, the added elements can also increase the hardness of the material, which is especially beneficial for applications with wear such as magnetic heads.
The production process of 1J79 alloy is more complicated. For example, the plate rolling process, annealing temperature, time, cooling speed after annealing, etc. all have a great influence on the final magnetic properties of the material. At present, the products provided by Shanghai Rongkun Metal have mature production technology. The 1J79 products produced are often used in the iron cores of medium and high frequency transformers or devices with strict requirements on sensitivity. Our company can provide deep processing services and provide customers with The components that have been processed and have undergone corresponding heat treatment ensure that the magnetic properties of the product can meet the requirements of relevant standards.
1J79 alloy material has the characteristics of small magnetostriction coefficient, easy to conduct magnetism, fast demagnetization, small coercive force, low eddy loss, etc. The use covers the entire frequency range of power frequency, intermediate frequency to high frequency, and the products include cold-drawn wire and cold-rolled Barbed, cold drawn bars, forgings, round steel, etc. are delivered in the form of switching power transformers, precision transformers, leakage switching transformers, magnetic shields, yokes, and zero sequence of high-sensitivity small power transformers used under weak magnetic fields. Power transformer, low-power magnetic amplifier, high-frequency power supply.
1J79 has low coercivity and remanence and excellent DC magnetic performance. It is suitable for use in weak magnetic fields. It is mainly used in the transmission of weak signals of precision instruments and conversion components, leakage detection in circuits, and shielding of weak magnetic fields, such as shielding covers. .
2. Performance
The magnetostriction coefficient is small, easy to conduct magnetism, fast demagnetization, low coercivity, low eddy current loss, low coercivity and remanence, and excellent DC magnetic performance. Low coercivity and remanence, excellent DC magnetic properties, suitable for use in weak magnetic fields.
Three, use
1J79 soft magnetic alloy is mainly used for switching power supply transformers, precision transformers, leakage switching transformers, magnetic shields, yokes, and high-sensitivity small power transformers used under weak magnetic fields. Zero-sequence power transformers, low-power magnetic amplifiers, and high-frequency power supplies . 1J79 is also suitable for use in weak magnetic fields, mainly used in the transmission and conversion of weak signals of precision instruments, leakage detection in circuits, and shielding of weak magnetic fields, such as shields, etc.
Four, similar grades
Permalloy 80, Magnifier 7904, 79HM (Russia), PC (Japan)
5. Chemical composition (%)
C≤0.03,
P≤0.020,
S≤0.020,
Mn=0.60~1.10,
Si=0.30~0.50,
Ni=78.5~80.0,
Mo=3.80~4.10,
Cu≤0.20,
Fe=surplus
Audited Supplier 
){kind=link}
){kind=link}