1J46 Soft Magnetic Alloy Plate
1J46 Soft Magnetic Alloy Plate is a nickel-iron soft magnetic precision alloy plate designed for high permeability, low coercive force and stable magnetic performance in weak magnetic fields. It is widely used in magnetic shielding, relays, transformers, sensors, electromagnetic cores, precision instruments and soft magnetic components.
SASA ALLOY supplies 1J46 soft magnetic alloy plates, sheets, strips and cut plates in customized thickness, width, length, tolerance and surface finish. MTC (Mill Test Certificate), EN 10204 3.1 certificate, PMI inspection, dimensional inspection, magnetic property testing and third-party inspection can be provided according to project requirements.
Product Parameters
| Item | Details |
|---|---|
| Product Name | 1J46 Soft Magnetic Alloy Plate / 1J46 Ni-Fe Precision Alloy Sheet |
| Grade | 1J46 / Ni-Fe Soft Magnetic Alloy / Permalloy Type Alloy |
| Material Type | Nickel-Iron soft magnetic precision alloy |
| Shape & Sizes | Plate, sheet, strip, cut plate; thickness, width and length can be customized |
| Thickness | Commonly 0.05 mm – 80 mm, customized thickness available according to project requirement |
| Width | Commonly 100 mm – 1500 mm, slit width and special width available |
| Length | 1000 mm – 6000 mm or cut-to-size according to drawing |
| Surface Finish | Bright, pickled, polished, ground, cold rolled finish |
| Standards | GB/T 15002, GB/T 15001 or customer technical specification |
| Tolerance | Standard tolerance or customized thickness, width, length and flatness tolerance according to drawing |
| Certificate | MTC, EN 10204 3.1 certificate, PMI report, dimensional inspection report, magnetic property test report and third-party inspection available |
Chemical Composition
The following chemical composition is a typical reference range for 1J46 soft magnetic alloy plate. Final chemical values should be confirmed according to the actual Mill Test Certificate.
| Element | Content (%) | Function in Alloy |
|---|---|---|
| Nickel (Ni) | 45.0 – 46.5 | Provides high permeability and stable soft magnetic performance |
| Iron (Fe) | Balance | Base element for Ni-Fe soft magnetic alloy structure |
| Carbon (C) | ≤ 0.03 | Controlled impurity for magnetic and processing performance |
| Manganese (Mn) | ≤ 0.60 | Controlled residual element and processing support |
| Silicon (Si) | ≤ 0.30 | Controlled residual element |
| Phosphorus (P) | ≤ 0.020 | Controlled impurity |
| Sulfur (S) | ≤ 0.020 | Controlled impurity |
| Copper (Cu) | ≤ 0.20 | Controlled residual element |
| Chromium (Cr) | ≤ 0.20 | Controlled residual element |
| Cobalt (Co) | ≤ 0.20 | Controlled residual element |
Mechanical Properties
The following values are typical reference data for 1J46 soft magnetic alloy plate. Mechanical and magnetic properties may vary depending on thickness, rolling condition, annealing condition and final heat treatment.
| Property | Reference Value | Engineering Meaning |
|---|---|---|
| Tensile Strength | Approx. 450 – 700 MPa | Suitable for precision magnetic components and formed parts |
| Yield Strength | Condition dependent | Depends on cold rolling and annealing condition |
| Elongation | Approx. 25% – 40% | Good ductility for forming, cutting and fabrication |
| Density | Approx. 8.2 g/cm³ | Reference for weight calculation and component design |
| Initial Permeability | High in weak magnetic field | Useful for magnetic shielding and sensitive magnetic components |
| Coercive Force | Low after proper annealing | Supports low magnetic loss and soft magnetic behavior |
| Magnetic Performance | Annealing dependent | Final magnetic heat treatment is important for performance stability |
Common Size Table
| Thickness | Width | Length | Common Use |
|---|---|---|---|
| 0.05 – 0.30 mm | Slit width or coil width | Coil / strip / cut sheet | Magnetic shielding, precision cores, sensor components |
| 0.30 – 1.0 mm | 100 – 1000 mm | 1000 – 3000 mm | Relay parts, transformer cores, instrument components |
| 1.0 – 3.0 mm | 300 – 1500 mm | 1000 – 6000 mm | Magnetic shielding plates, electromagnetic components, cut parts |
| 3.0 – 10 mm | 500 – 1500 mm | Cut-to-size | Machined magnetic plates, magnetic bases and precision assemblies |
| Above 10 mm | Customized | Customized | Special magnetic parts and project fabrication |
Different Specifications Comparison
| Product Form | Main Feature | Recommended Application | Selection Advice |
|---|---|---|---|
| 1J46 Plate | Good thickness range and machining allowance | Magnetic shielding plates, electromagnetic parts, precision assemblies | Recommended for medium thickness and machined components |
| 1J46 Sheet | Thin section and easier cutting/forming | Instrument parts, magnetic shields, relay parts | Recommended when lightweight and thin section are required |
| 1J46 Strip | Suitable for slitting, stamping and batch production | Transformer cores, sensor parts, magnetic shielding components | Recommended for continuous production and precision stamping |
| 1J46 Cut Plate | Customized size and reduced machining waste | CNC parts, project fabrication, special magnetic components | Recommended when exact drawing dimensions are available |
| 1J46 Round Bar | Suitable for cylindrical magnetic parts | Magnetic shafts, cores, pins and machined components | Recommended for round precision magnetic components |
Equivalent Standards and International Names
| Standard / Name | Designation | Remarks |
|---|---|---|
| Chinese Grade | 1J46 | Nickel-iron soft magnetic alloy |
| Chemical Type | Ni-Fe alloy | Nickel-iron precision soft magnetic alloy |
| Common International Name | Permalloy Type Alloy | Used as a general reference for Ni-Fe soft magnetic alloys |
| Approximate Nickel Level | 46% Ni | Medium-nickel soft magnetic alloy for weak magnetic field applications |
| Chinese Standard | GB/T 15002 / GB/T 15001 | Technical and inspection reference for precision soft magnetic alloys |
| Related Grades | 1J50 / 1J79 / 1J85 | Different Ni-Fe soft magnetic alloys selected according to magnetic performance requirements |
Production Process Flow
| Step | Process | Quality Control Focus |
|---|---|---|
| 1 | Raw Material Selection | Check Ni and Fe content, raw material source and heat number traceability |
| 2 | Melting / Refining | Control nickel content and impurity elements |
| 3 | Ingot / Slab Preparation | Ensure suitable slab quality for plate or strip rolling |
| 4 | Hot Rolling / Cold Rolling | Control plate thickness, width, structure and rolling condition |
| 5 | Annealing / Magnetic Heat Treatment | Optimize permeability, coercive force and magnetic stability |
| 6 | Flattening / Leveling | Control plate flatness and dimensional stability |
| 7 | Cutting / Slitting | Meet customer drawing, width and length requirements |
| 8 | Surface Finishing | Pickling, polishing, grinding or protective treatment if required |
| 9 | Inspection and Testing | PMI, chemical analysis, dimension, flatness, surface and magnetic test if required |
| 10 | Packaging and Shipment | Protective wrapping, wooden pallet or case, label, heat number and shipping mark |
Product Inspection
| Inspection Item | Inspection Method | Purpose |
|---|---|---|
| Chemical Composition | Spectrometer analysis / laboratory test | Confirm 1J46 Ni-Fe alloy grade and element control |
| PMI Test | Positive Material Identification | Prevent material mix-up and wrong grade shipment |
| Mechanical Test | Tensile strength, hardness or other required test | Verify mechanical performance according to order requirement |
| Magnetic Property Test | Permeability, coercive force, magnetic induction or customer-defined test | Verify magnetic performance for shielding and electromagnetic applications |
| Dimension Inspection | Micrometer, caliper, thickness gauge and ruler | Confirm thickness, width, length and tolerance |
| Flatness Inspection | Visual inspection and flatness measurement | Ensure plate flatness for machining, stamping and assembly |
| Surface Inspection | Visual inspection and surface quality check | Check scratches, cracks, oxidation, pits and surface finish |
| Certificate | MTC / EN 10204 3.1 / inspection report | Ensure material traceability and project documentation |
Product Packaging
| Packaging Item | Details | Benefit |
|---|---|---|
| Surface Protection | Plastic film, anti-rust paper, oil protection or protective wrapping | Protects plate surface from scratches and oxidation during transportation |
| Plate Packing | Plates stacked with protective interlayer and fixed by steel strips | Prevents movement, bending and surface damage |
| Wooden Case / Wooden Pallet | Export-standard wooden case or pallet | Suitable for long-distance sea, air and truck shipment |
| Edge Protection | Corner protection and edge protection available if required | Reduces edge damage during loading and unloading |
| Labeling | Grade, size, heat number, quantity, net weight and customer mark | Improves material traceability after delivery |
| Document Support | Packing list, invoice, MTC, EN 10204 3.1 certificate and inspection report if required | Supports customs clearance and project acceptance |
Applications & Machinability
Applications
| Industry | Typical Parts | Why 1J46 Soft Magnetic Alloy Plate Is Used |
|---|---|---|
| Medical Instruments | Magnetic shielding parts, precision instrument housings, sensor components | High permeability and stable magnetic response for sensitive instrument assemblies |
| Aerospace | Magnetic shielding plates, relay components, sensor shields and control system parts | Suitable for weak magnetic field shielding and precision electromagnetic components |
| Marine Hardware | Special electromagnetic shielding parts, sensor housings and control components | Used when magnetic shielding or soft magnetic function is required; surface protection should be considered |
| Chemical Processing | Sensor shielding parts, instrument components and non-corrosive-area electromagnetic assemblies | Suitable for magnetic function parts; not primarily selected for acid corrosion resistance |
| Electrical & Electronics | Transformer cores, relay cores, magnetic shields, electromagnetic cores and sensor parts | High permeability and low coercive force support efficient soft magnetic performance |
Machinability, Welding and Heat Treatment
| Processing Property | Performance | Recommendation |
|---|---|---|
| Machinability | Machinable but not a free-cutting alloy like 303 stainless steel; processing depends on thickness and annealing condition | Use rigid machines, sharp tools, suitable cutting speed and sufficient coolant |
| Stamping / Cutting | Thin sheet and strip can be stamped, slit or cut | Use proper tooling and confirm burr control for magnetic shielding and precision parts |
| Welding Performance | Welding is possible, but magnetic performance and distortion control should be considered | Confirm welding procedure, cleaning method and final magnetic property requirement before fabrication |
| Heat Treatment | Annealing or magnetic heat treatment is important for achieving high permeability and low coercive force | Final heat treatment should follow magnetic property target and project specification |
| Cold Working | Cold rolling or forming can increase hardness and affect magnetic properties | Final annealing may be required to restore or optimize soft magnetic performance |
| Surface Protection | Surface oxidation may occur during processing and storage | Use dry storage, protective wrapping and suitable anti-rust packaging for export shipment |
Why Choose SAKY STEEL?
| Advantage | Description |
|---|---|
| Professional Precision Alloy Supply | SAKY STEEL supplies precision alloys including 1J22, 1J46, 1J50, 1J79, 1J85, 4J29, 4J36, elastic alloys, expansion alloys and resistance alloys for industrial and high-performance applications. |
| Customized Size Capability | Thickness, width, length, surface finish, tolerance, cutting service and machining allowance can be customized according to customer drawings or project requirements. |
| Quality Control and Traceability | Material traceability, heat number control, PMI testing, dimensional inspection, flatness inspection, surface inspection, mechanical testing and magnetic property testing can be arranged. |
| Certificate Support | We can provide MTC (Mill Test Certificate / 质保书), EN 10204 3.1 certificate, PMI report, inspection report and other quality documents according to order requirements. |
| Export Packaging Experience | Export wooden cases, wooden pallets, protective wrapping, oil protection, edge protection and clear labels help ensure safe delivery for international shipments. |
| Technical Service Support | Our team can support grade selection, equivalent standard checking, heat treatment discussion, technical document preparation and project specification confirmation before shipment. |
FAQ
Q1: What is 1J46 Soft Magnetic Alloy Plate?
1J46 Soft Magnetic Alloy Plate is a nickel-iron soft magnetic alloy plate with high permeability, low coercive force and stable magnetic performance in weak magnetic fields. It is used for magnetic shielding, relays, transformers, sensors, precision instruments and electromagnetic cores.
Q2: What is the main feature of 1J46?
The main feature of 1J46 is good permeability and soft magnetic performance in weak magnetic fields. It is suitable for magnetic shielding and precision electromagnetic applications.
Q3: Is 1J46 the same as 1J50 or 1J79?
No. 1J46, 1J50 and 1J79 are all nickel-iron soft magnetic alloys, but their nickel content and magnetic performance are different. The final selection should be based on permeability, coercive force, magnetic induction and application requirements.
Q4: Can SASA ALLOY provide 1J46 Plate with MTC?
Yes. SASA ALLOY can provide MTC (Mill Test Certificate / 质保书), EN 10204 3.1 certificate, PMI report, dimensional inspection report, magnetic property test report and third-party inspection documents according to customer requirements.
Q5: What sizes of 1J46 Soft Magnetic Alloy Plate are available?
Common thickness ranges from 0.05 mm to 80 mm. Width, length, surface finish, flatness and tolerance can be customized. Cut-to-size and slitting service are available for precision magnetic component production.
Q6: Is 1J46 plate easy to machine?
1J46 plate is machinable, but it is not a free-cutting alloy like 303 stainless steel. Rigid equipment, sharp tools, suitable cutting speed and sufficient coolant are recommended to improve machining quality.
Q7: Can 1J46 plate be welded?
Welding may be possible with proper procedure, but magnetic performance and distortion control should be considered. For critical magnetic parts, customers should confirm welding procedure and final heat treatment plan before fabrication.
Q8: Does 1J46 require heat treatment?
Yes. Annealing or magnetic heat treatment is important for achieving high permeability and low coercive force. Final heat treatment should be selected according to magnetic property requirements and project specifications.
Q9: What applications use 1J46 plate?
1J46 plate is used in magnetic shielding, relays, transformers, sensors, precision instruments, electromagnetic cores, control systems and soft magnetic components.
Q10: How can I get a quotation for 1J46 Soft Magnetic Alloy Plate?
Please send your required grade, thickness, width, length, quantity, surface finish, tolerance, flatness, heat treatment condition, magnetic property requirement and certificate requirements to SASA ALLOY. Our team will check availability, production route, delivery time and price for your project.
