4J36 alloy is also called INVAR alloy. The Curie point of the alloy is about 230°C. Below this temperature, the alloy is ferromagnetic and has a very low expansion coefficient. Above this temperature, the alloy is non-magnetic and the expansion coefficient increases.
Iron-nickel constant expansion alloys are a series of constant expansion alloys that can match soft glass and ceramics with different expansion coefficients within a given temperature range by adjusting the nickel content. The expansion coefficient and Curie point increase with increasing nickel content.
4J29 alloy is also called Kovar alloy. The alloy has a linear expansion coefficient similar to that of silicon boron hard glass at 20~450℃, a high Curie point and good low-temperature structural stability. The alloy's oxide film is dense and can be well infiltrated by glass. It does not react with , and is suitable for use in instruments containing mercury discharge. It is the main sealing structure material for electric vacuum devices.
Iron-nickel soft magnetic alloy 1J79
1J79 is a kind of soft magnetic alloy. Soft magnetic alloy is a magnetic alloy that is easily magnetized under the action of an external magnetic field, and the magnetic induction intensity basically disappears after the magnetic field is removed. Soft magnetic alloys are divided into low-carbon electrical steel and Armco iron, silicon steel sheets, nickel-iron soft magnetic alloys, iron-cobalt soft magnetic alloys, iron-silicon-aluminum soft magnetic alloys, etc. In the power industry, soft magnetic alloys mainly use alloys with high magnetic induction and low core loss in higher magnetic fields. In the electronics industry, alloys with high magnetic permeability and low coercivity in low or medium magnetic fields are mainly used. At high frequencies, thin strips or alloys with higher resistivity must be used. Generally, plates or strips are used.
Iron-nickel soft magnetic alloy 1J50
1J50 is a kind of soft magnetic alloy. Soft magnetic alloy is a magnetic alloy that is easily magnetized under the action of an external magnetic field, and the magnetic induction intensity basically disappears after the magnetic field is removed. Soft magnetic alloys are divided into low-carbon electrical steel and Armco iron, silicon steel sheets, nickel-iron soft magnetic alloys, iron-cobalt soft magnetic alloys, iron-silicon-aluminum soft magnetic alloys, etc. In the power industry, soft magnetic alloys mainly use alloys with high magnetic induction and low core loss in higher magnetic fields. In the electronics industry, alloys with high magnetic permeability and low coercivity in low or medium magnetic fields are mainly used. At high frequencies, thin strips or alloys with higher resistivity must be used. Generally, plates or strips are used.
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