Soft Magnetic Alloy

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Soft magnetic materials

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Soft magnetic materials are alloys with high magnetic permeability, low coercivity, and minimal energy loss during magnetization and demagnetization cycles. These properties make them ideal for applications involving alternating or fluctuating magnetic fields, such as transformers, motors, and inductors.

Available grades: 1J06, 1J12, 1J17, 1J18, 1J22, 1J30, 1J36, 1J38, 1J46, 1J50, 1J51, 1J54, 1J76, 1J77, 1J79, 1J80, 1J85, 1J87

Easily magnetized and demagnetized
Requires minimal energy to reverse magnetization
Minimal energy loss due to hysteresis and eddy currents
High saturation magnetic flux density, ensuring effective magnetic performance

Power generation & distribution: Transformer cores, stators, and rotors in generators
Consumer electronics: Magnetic shielding, inductors, and small transformers
Automotive: Electric vehicle motors, sensors, and inductive charging systems
Medical: MRI systems and other medical imaging devices
Aerospace: High-performance motors and actuators

Product Forms

Soft Magnetic Alloy Rod

Soft Magnetic Alloy Strip

Soft Magnetic Alloy Wire

Soft Magnetic Alloy Tube

Strip

Thickness: 0.02mm-2.0mm

Width: 3mm-500mm

Length: Coiled strip or cut-to-length (up to 5000 m)
Plate / Sheet

Thickness: 0.3mm-10mm

Width: 100mm-1000mm

Length: 500mm-2000mm
Rod

Diameter: Ø5mm-Ø50mm

Length: 100mm-2000mm。
Wire

Diameter: Ø0.02mm-Ø3mm

Delivery Forms: Bright shiny surface or anodized surface, supplied in spools

Magnetic Properties

Material	Nickel-Iron Alloy	Cobalt-Iron Alloy
Saturate Induction (Bs)	0.8-1.6 T	2.0-2.3 T
Initial Magnetic Permeability (μi)	10,000-100,000	1,000-5,000
Coercivity (Hc)	≤2 A/m	≤15 A/m
Hysteresis Loss (W/kg)	Very low	Medium

Electrical Properties

Electrical Resistivity
Nickel-Iron Alloy	50-60×10⁻⁶ Ω·cm

Mechanical Properties

Hardness
Nickel-Iron Alloy	150-200 HV
Density
Nickel-Iron Alloy	8.1g/cm³
Cobalt-Iron Alloy	8.3g/cm³

Chemical Composition

Alloy Grades	Carbon (C)	Sulfur (S)	Phosphorus (P)	Manganese (Mn)	Silicon (Si)	Nickel (Ni)	Chromium (Cr)	Cobalt (Co)	Molybdenum (Mo)	Copper (Cu)	Aluminum (Al)	Niobium (Nb)	Iron (Fe)	Other Elements
	Not greater than
1J06	0.04	0.015	0.015	≤0.10	≤0.15	-	-	-	-	-	5.5-6.5	-	Rest	-
1J12	0.03	0.015	0.015	≤0.10	≤0.15	-	-	-	-	-	11.6-12.4		Rest	-
1J17	0.03	0.02	0.02	≤0.60	≤0.20	-	15.5-16.5	-	-	-	-	-	Rest	-
1J18	0.03	0.02	0.02	0.3-0.7	≤0.15	0.5-0.7	17-18.5	-	-	-	-	-	Rest	Ti.0.3-0.7
1J22	0.04	0.02	0.02	≤0.3	≤0.3	≤0.5	-	49-51	-	≤0.2	-	-	Rest	V.0.8-1.8
1J30	0.04	0.02	0.02	≤0.40	≤0.30	29.5-30.5	-	-	-	-	-	-	Rest	-
1J36	0.03	0.02	0.02	≤0.60	≤0.20	35.0-37.0	-	-	-	-	-	-	Rest	-
1J38	0.03	0.05	0.02	0.3-0.6	0.15-0.3	37.5-38.5	12.5-13.5	-	-	-	-	-	Rest	-
1J46	0.03	0.02	0.02	0.6-1.1	0.15-0.3	45.0-46.5	-	-	-	≤0.2	-	-	Rest	-
1J50	0.03	0.02	0.02	0.3-0.6	0.15-0.3	49-50.5	-	-	-	≤0.2	-	-	Rest	-
1J51	0.03	0.02	0.02	03-0.6	0.15-0.3	49-50.5	-	-	-	≤0.2	-	-	Rest	-
1J54	0.03	0.02	0.02	0.3-0.6	1.1-1.4	49.5-51	3.8-42	-	-	≤0.2	-	-	Rest	-
1J76	0.03	0.02	0.02	0.3-0.6	0.15-0.3	75.0-76.5	1.8-22	-	-	4.8-5.2	-	-	Rest	-
1J77	0.03	0.02	0.02	0.3-0.6	0.15-0.3	75.5-78	-	-	3.9-4.5	4.8-6.0	-	-	Rest	-
1J79	0.03	0.02	0.02	0.6-1.10	0.3-0.5	78.5-80.0	-	-	3.8-4.1	≤0.2	-	-	Rest	-
1J80	0.03	0.02	0.02	0.6-1.10	1.1-1.5	79.0-81.5	2.6-3.0	-	-	≤0.2	-	-	Rest	-
1J85	0.03	0.02	0.02	0.3-0.60	0.15-0.3	79.0-81.0	-	-	4.8-5.2	≤0.2	-	-	Rest	-
1J87	0.03	0.02	0.02	03-0.6	≤0.3	78.5-80.5	-	-	1.6-22	-	-	6.5-7.5	Rest	-

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