Low coercivity, low residual magnetism, high saturation magnetic induction strength soft magnetic alloy
Low coercivity, low residual magnetism, high saturation magnetic induction strength soft magnetic alloy
Brand: 1J21
Standards: GJB6479-2008, QB/APA-003-2018
Characteristics: high saturation magnetic induction intensity, high Curie point and high hysteresis coefficient, low coercivity.
Application: Widely used in aviation motors, electromagnetic pole heads, end welded pipes in magnetrons, vibrating membranes for telephone earphones, torque motors, and magnetic hysteresis transducer cores.
Chemical Composition
Brand | C | Mn | Si | S | P | Cu | Ni | Co | V | Fe |
≦ | ||||||||||
1J21 | 0.03% | 0.3% | 0.2% | 0.02% | 0.02% | 0.2% | 0.15% | 49%– 51% | 0.80% - 1.20% | Balance |
Magnetic and mechanical properties of alloys after heat treatment
Standard | Brand | Form | Magnetic induction intensity under different magnetic induction fields (A/m) | Coercivity Hc | Br(T)z | Yield strength (Rp0.2) | ||||
B400 | B800 | B1600 | B4000 | B8000 | ||||||
≧ | ≦ | Soft state | ||||||||
GJB6479-2008 | 1J21 | strip | 1.80 | 2.00 | 2.10 | 2.35 | ／ | 48 | 1.5 | 240 Mpa |
QB/APA-003-2018 | 1J22A | strip | 1.85 | 2.00 | 2.10 | 2.25 | 2.3 | 35 | 1.2 | 240 Mpa |
1J22A | bar | 1.80 | 2.20 | 2.10 | 2.25 | 2.3 | 80 | 1.5 | ||
Loss of alloy strip at different frequenices
Brand | Thickness (mm) | Iron Loss (W/kg) | |||||
60 Hz | 400 Hz | ||||||
10 kgs | 15 kgs | 20 kgs | 10kgs | 15 kgs | 20 kgs | ||
1J21 | 0.1 | 1 | 1.8 | 2.8 | 8 | 15 | 27 |
1J22A | 0.35 | 0.65 | 1.05 | 1.5 | 6.5 | 14 | 26.0 |
0.15 | 0.55 | 0.85 | 1.3 | 4.1 | 5.8 | 11.2 | |