1J46 Ni-Fe Soft Magnetic Alloy
ZYTC Alloy is a professional Chinese manufacturer and global supplier of 1J46 nickel-iron soft magnetic alloy. 1J46 is a classic nickel-iron soft magnetic material composed of approximately 50% nickel, 48% iron, and trace microelements. It offers high initial magnetic permeability and high saturation induction, making it widely used as an AC soft magnetic material in precision electrical and electronic devices.
1. Chemical Composition
| Element | Weight % |
|---|---|
| Nickel (Ni) | 49.0 每 51.0 |
| Iron (Fe) | Balance |
| Manganese (Mn) | 0.30 每 0.60 |
| Silicon (Si) | 0.15 每 0.30 |
| Carbon (C) | ≒ 0.03 |
| Phosphorus (P) | ≒ 0.020 |
| Sulfur (S) | ≒ 0.020 |
2. Physical & Magnetic Properties
| Property | Typical Value | Unit |
|---|---|---|
| Density | 8.2 每 8.3 | g/cm³ |
| Electrical Resistivity | 0.45 每 0.55 | 米次﹞m |
| Curie Temperature | ~500 | ∼C |
| Saturation Magnetic Induction (Bs) | 1.50 每 1.55 | T |
| Initial Permeability (米i) | 4,000 每 6,000 | 〞 |
| Maximum Permeability (米max) | 60,000 每 80,000 | 〞 |
| Coercivity (Hc) | ≒ 12 | A/m |
| Remanence (Br) | 0.6 每 0.8 | T |
3. Mechanical Properties (Annealed Strip)
| Property | Value |
|---|---|
| Tensile Strength | 450 每 550 MPa |
| Yield Strength (0.2%) | 150 每 250 MPa |
| Elongation | 30 每 40% |
| Hardness | 130 每 170 HV |
| Modulus of Elasticity | ~200 GPa |
4. Eddy Current Loss & Insulation Coating
Under alternating magnetization, eddy currents generate internal energy loss. Lower resistivity, thicker gauge, and higher operating frequency all increase eddy loss and degrade magnetic performance. To suppress eddy current loss, 1J46 is typically processed into thin strips or foils with a surface insulation coating.
ZYTC Alloy offers magnesium oxide electrophoretic coating service to form a uniform oxide insulating layer on the strip surface. This coating effectively reduces inter-laminar eddy currents and maintains stable magnetic properties in AC applications.
5. Typical Applications
1J46 soft magnetic alloy is widely used in:
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High-permeability yoke irons
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Sensitive relays
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Low-loss micro-motors
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Low-power transformers and pulse transformers
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Transistor switches
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Magnetic amplifiers and magnetic modulators
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Sensitive signal input and output transformers
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Magnetic sensors for aviation magnetic heading instruments
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Magnetic sensitive components for magnetic measuring instruments
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Stator and moving plates of precision electric meters
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Magnetic shielding parts
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Magnetic temperature compensation elements
6. Product Forms & Custom Processing
| Product Form | Thickness / Size Range | Width |
|---|---|---|
| Cold-Rolled Strip | 0.02 mm 每 2.0 mm | Up to 300 mm |
| Foil | 0.005 mm 每 0.05 mm | Up to 200 mm |
| Custom Slit Strip | As required | As required |
| Insulated Strip | With MgO electrophoretic coating | As required |
ZYTC Alloy provides complete processing services including slitting, cutting, dimension customization, and insulation coating.
7. ZYTC Alloy Advantage
As a Chinese precision soft magnetic alloy manufacturer, ZYTC Alloy strictly controls smelting, rolling, and vacuum annealing processes for 1J46. We guarantee stable magnetic performance for every batch and provide complete MTR test certificates.
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✅ AS9120B & ISO 9001 certified 每 rigorous quality management
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✅ Stable batch-to-batch magnetic properties
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✅ Full material traceability from melt to finished strip
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✅ EN 10204 3.1 / 3.2 inspection certificates available
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✅ Magnesium oxide electrophoretic insulation coating service
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✅ Precision slitting, cutting, and custom dimension processing
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✅ Small-batch prototype orders and mass serial production
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✅ Global logistics delivery for aerospace, instrumentation, electronics, and energy industries
8. Get a Custom Inquiry
Send us your drawing, dimensions, magnetic performance requirements, and application details. The ZYTC Alloy technical team will provide professional material recommendations and a competitive quotation within 24 hours.
📧 Email: dominic@zytc-steel.com
📲 WhatsApp: +86 13132148618