High saturation magnetic induction soft magnetic 1J50 iron-nickel alloy is a nickel alloy containing 45-55% of nickel. It shows relatively good initial permeability and high saturation induction. The saturation induction value of 1J50 is about 1.55T, and has the highest in nickel-iron alloys. Saturation induction value. High magnetic properties can be obtained by low temperature annealing. After the final heat treatment, it has an obvious cubic crystal structure, the hysteresis loop is almost rectangular, and the remanence is as high as 1.5T.

Metallographic structure of 1J50:

1J50 alloy is austenitic structure

1J50 application range application areas are:

1. Various transformers, relays, electromagnetic clutches, chokes and such original iron cores, pole shoes, earphone diaphragms, relay parts for earth leakage circuit breakers, gas safety valves, magnetic shields, and gyroscopes used in medium magnetic fields , Automatic synchronous motor, electronic watch micro motor 


1J50 chemical composition:

Nickel Ni: 49.0-50.5

Chromium Cr:-

Iron Fe: margin

Molybdenum: 3.8-4.1

Carbon C: ≤0.03

Silicon Si: 0.15-0.30

Sulfur S: ≤0.02

Copper Cu: ≤0.20

Aluminum Al:-

Titanium Ti:-

Phosphorus P: ≤0.02

Manganese Mn: 0.30-0.60

Grade 1J50
 
Resistivity/(μΩ•m) Density/(g/cm3) Curie point/ºC Saturation magnetostriction coefficient (×10 - 2)

0.45 8.2 500 25

Brinell hardness HBS tensile strength/MPa yield strength/MPa elongation (%)

Chilled hard state Soft state Chilled hard state Soft state Chilled hard state Soft state Chilled hard state Soft state

170 130 785 450 685 150 3 37

Mechanical behavior:

The linear expansion coefficient in the following temperature range/(×10-6/ ºC)

20~100 ºC 20~200ºC 20~300ºC 20~400ºC 20~500ºC

1J50 8.9 9.27 9.2 9.2 9.4