... alloy we produce is 1J16,1J13,1J12,1J6.5. With high permeability and low coercive force, 1J16 alloy is appropriate to use ... alloy is appropriate to produce ultrasonic device.7. With high permeability and high magnetic induction, 1J12 alloy is appropriate to work under the ... condition of mid-magnetic field.8. With high saturation magnetic induction, 1J6 alloy is appropriate to work under ...