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1J22 is a high saturation magnetic induction strength Fe-Co-vanadium soft magnetic alloy, in the existing soft magnetic materials, the alloy has the highest saturation magnetic induction strength (2.4T), the highest Curie temperature (980℃), large saturation magnetostriction coefficient (60 ~ 100×10-6). Due to the high saturation magnetic induction strength of 1J22 alloy, the volume can be greatly reduced when making a motor with the same power, and a large suction force can be generated under the same cross-sectional area when making an electromagnet. Due to the high Curie temperature of 1J22 alloy, the alloy can work at a higher temperature where other soft magnetic materials have been completely demagnetized, and maintain good magnetic stability. Because 1J22 alloy has a large magnetostrictive coefficient, it is suitable for magnetostrictive transducer, with high output energy and high working efficiency. However, 1J22 alloy has low resistivity and should not be used at high frequencies. The price is more expensive, easy oxidation, poor processing performance, adding an appropriate amount of nickel or other elements, can improve its processability.
Tablet 1 wt%
C | Mn | Si | P | S | Cu | Ni | Co | V | Fe |
≤ | |||||||||
0.04 | 0.30 | 0.30 | 0.020 | 0.020 | 0.20 | 0.50 | 49.0～51.0 | 0.80～1.80 | Bal |
Cold rolled strip, cold drawn wire, hot rolled (forged) flat and bar, without heat treatment supply. The specifications, sizes and permissible deviations of the varieties are shown in Table 2. If there are special requirements for the sizes, the supply and demand parties shall agree.
Tablet 2
Items | (δ or D)/mm | B/mm | L/mm≥ | Spec. | (δ or D)/mm | B/mm | L/mm≥ | ||
Dimension | Tolerance | Dimension | Tolerance | ||||||
Cold rolled strip | 0.05～0.09 | 0 －0.015 | 60～120 | 5000 | Wire | >0.49～0.09 | ±0.03 | - | - |
>0.09～0.19 | 0 －0.02 | 500 | >0.90～3.00 | ±0.04 | |||||
>0.19～0.25 | 0 －0.03 | 200 | >3.00～6.00 | ±0.06 | |||||
>0.25～0.40 | 0 －0.04 | 200 | Hot rolled bar | 6.0～8.0 | ±0.5 | - | 1000 | ||
>0.40～0.70 | 0 －0.05 | 200 | >8.0～12.0 | ±1.0 | 1000 | ||||
>0.70～1.00 | 0 －0.06 | 200 | >12.0～35.0 | ±1.5 | 250 | ||||
Cold drawn wire | 0.10～0.19 | ±0.01 | － | － | >35.0～50.0 | ±2.0 | 250 | ||
>0.19～0.49 | ±0.02 | >50.0～80.0 | ±4.0 | 250 | |||||
>80.0～100.0 | ±5.0 | 150 | |||||||
1J22 alloy expansion coefficient
Tablet 3
θ/℃ | 20～100 | 20～200 | 20～300 | 20～400 | 20～500 | 20～600 | 20～700 | 20～800 |
α1/10-6℃-1 | 9.2 | 9.5 | 9.8 | 10.0 | 10.4 | 10.5 | 10.8 | 11.3 |
1J22 electrical property/curie point is showed in tablet 4
Saturation magnetostrictive coefficient showed in tablet 4
Tablet 4
ρ/(μΩ·m) | ρ/(g/cm3) | Tc/℃ | λθ/10-6 |
0.40 | 8.20 | 980 | 60～100 |
The magnetic properties under different magnetic fields（strength）are shown in Table 5/6
Tablet 5
Alloy | different magnetic fields（A/m）- Magnetic induction intensity（T） | Hc（A/m） | ||||||
B400 | B800 | B1600 | B2400 | B4000 | B8000 | |||
不小于 | ≤ | |||||||
1J22 | 1.70 | 1.90 | 2.00 | 2.10 | 2.20 | 2.25 | 140 | |
Tablet 6
δ/mm | Different Magnetic field strength (A/m)- Static magnetic properties T | Hc/(A/m)≤ | |||||
B400 | B800 | B1600 | B2400 | B4000 | B8000 | ||
0.1 | 1.68～1.79 | 1.94～2.01 | 2.12～2.15 | 2.20～2.25 | 2.28～2.31 | 2.35～2.40 | 120～148 |
0.2 | 1.70～1.80 | 2.00～2.02 | 2.15～2.18 | 2.22～2.25 | 2.30～2.33 | 2.40～2.41 | 115～135 |
0.35 | 1.70～1.81 | 1.95～2.02 | 2.12～2.17 | 2.20～2.24 | 2.20～2.24 | 2.28～2.34 | 123～135 |
