Iron-based
Iron-based powder is a raw material of alloy powder with iron as the main component, which is widely used in the fields of mechanical parts, 3C products, porous materials, tooling materials, magnetic materials, shielding materials, surface coatings, etc., and it is the raw material of powder metallurgy with a large dosage, and it has a high cost performance ratio.
FeNi50 soft magnetic alloy powder · Permalloy powder
High permeability · Low coercivity · Specialized for high-frequency electromagnetic shielding and inductors -150 mesh ~ -500 mesh
Process Advantages
High magnetic permeability · Low coercivity
High initial permeability, excellent maximum permeability, low coercivity, extremely low hysteresis loss, and sensitive response to weak magnetic fields.
Excellent temperature stability
It exhibits a relatively high Curie temperature, with minimal variation in magnetic properties over a wide temperature range and excellent aging resistance.
Spherical Powder · Process Compatibility
Non‑vacuum atomized spherical powder with excellent flowability and high tapped density, suitable for PM compaction, MIM, and SLM printing.
Flexible granularity · Customization support
Available in standard mesh sizes ranging from -150 to -500, with options for insulating coating (to reduce high-frequency eddy current losses) and pre‑annealing treatment.
Product Real-Scene Photos & Microscopic Morphology
SEM of spherical FeNi50 powder
Non‑vacuum atomized spherical or near‑spherical particles with uniform particle size and excellent flowability.
Real-life photos of the powder
Silver-gray powder, packaged in vacuum aluminum foil bags or iron drums.
Magnetic cores/electromagnetic shielding components
High-frequency transformer cores, electromagnetic shielding enclosures, and magnetic sensors
FeNi50 soft magnetic alloy powder: high-permeability Permalloy alloy
FeNi50 (1J50) belongs to the Permalloy family, consisting of approximately 50% nickel and 50% iron. It exhibits an exceptionally high initial permeability and very low coercivity, delivering a highly sensitive magnetic response even in weak magnetic fields while minimizing hysteresis losses. Its non‑vacuum atomized spherical powder demonstrates excellent flowability, high tapped density, and outstanding sintering activity, making it well suited for powder metallurgy compaction, metal injection molding (MIM), and selective laser melting (SLM) processes. This material features a relatively high Curie temperature, ensuring stable magnetic properties across typical industrial operating temperatures and strong resistance to aging. Typical applications include magnetic cores for switch-mode power supply transformers, filter inductors, PFC inductors, electromagnetic shielding enclosures, Hall sensor cores, microwave and RF transformers, and custom soft‑magnetic components produced via 3D printing. Customized products are available with tailored particle size distributions, insulating coatings to reduce high‑frequency eddy current losses, or pre‑annealing treatments.
Chemical Composition (wt%)
| element | Content | element | Content (≤ ppm) |
|---|---|---|---|
| Ni | 49.0-51.0% | C | 300 |
| Fe | Margin | S | 100 |
| —— Other impurities —— | P | 200 | |
| Yes | 100 | Co | 50 |
| Cr | 50 | Al | 50 |
| Mo | 50 | Mn | 100 |
* Major elements Ni + Fe ≥ 99.5%; total impurities are extremely low, ensuring stable magnetic properties. The exact composition shall be subject to the batch inspection report.
Key Magnetic Performance Parameters (Reference Values)
| Parameter | Typical value | Test conditions |
|---|---|---|
| Initial permeability μi | High | Under a weak magnetic field |
| Maximum permeability μmax | Excellent | — |
| Coercive force Hc | Low | After complete annealing of the sintered material |
| Saturation magnetic flux density Bs | High | External field ≥ 5000 A/m |
| Curie temperature Tc | ≈450℃ | — |
| Resistivity ρ | ≈0.4 μΩ·m | Room temperature |
* The above parameters are typical values after sintering and full annealing; the final magnetic properties depend on the forming process, the sintering regime, and subsequent heat treatment.
Particle Size Specifications & Physical Properties
| Particle size specification | Corresponding mesh count | Loose packing density (g/cm³) | Tap density (g/cm³) | D10(μm) | D50(μm) | D90(μm) | Typical Applications |
|---|---|---|---|---|---|---|---|
| -150 mesh | ≤106μm | ≈3.67 | ≈5.38 | 6.12 | 16.73 | 59.37 | Large magnetic cores, powder metallurgy compaction, hot isostatic pressing |
| -200 mesh | ≤75μm | — | — | — | — | — | Magnetic cores for small and medium-sized transformers, MIM parts of medium size |
| -300 mesh | ≤48μm | ≈3.32 | ≈5.05 | 5.35 | 11.33 | 19.99 | MIM precision components, SLM 3D printing, miniature inductors |
| -500 mesh | ≤25μm | ≈3.24 | ≈4.95 | 5.09 | 10.44 | 16.92 | High-frequency device magnetic cores, electromagnetic shielding coatings, and radar-absorbing materials |
* Physical properties are typical values for each batch; refer to the factory inspection report for specific data. Detailed particle size information for the 200-mesh specification is not listed but can be provided upon request.
Typical application areas
High-frequency transformer
Switching‑mode power supply transformer cores and pulse transformers with high permeability reduce magnetizing current and improve efficiency.
Inductor/Choke Coil
Filter inductors, PFC inductors, and common-mode chokes—high Bs values help prevent magnetic saturation under high current.
Electromagnetic shielding
High-precision shielding enclosures, shielding partitions, and magnetic shielding films for electronic devices, effectively absorbing stray magnetic fields.
Magnetic sensor
Hall‑effect sensor cores, magnetoresistive sensors, and current sensors—low Hc ensures high accuracy in detecting weak magnetic fields.
Microwave device
RF transformer magnetic cores and microwave ferrite alternative materials, suitable for medium- to high-frequency signal transmission.
3D printing (SLM)
Topology-optimized magnetic cores and lightweight soft magnetic components for aerospace applications, with complex structures formed in a single step.
MIM injection molding
Miniature magnetic cores, custom-shaped sensor housings, and precision shielding assemblies exhibit excellent fine-powder fillability.
High-frequency devices
High-frequency (MHz‑level) magnetic cores (requiring insulating coating) to reduce eddy current losses.
FeNi50 vs. Other Soft Magnetic Materials
| Material Type | Permeability | Coercivity | Curie temperature | Typical application focus |
|---|---|---|---|---|
| FeNi50 | High | Low | 450℃ | Mid-to-high frequency magnetic cores, electromagnetic shielding, sensors |
| FeNi80 (Permalloy) | Very high | Extremely low | 460℃ | Weak magnetic field detection, high-sensitivity sensors |
| Iron-based amorphous alloy | middle | Very low | ≈400℃ | Medium- and high-frequency power transformer |
| Silicon steel (Fe-Si) | Low | middle | ≈740℃ | Power-frequency motors, high-power transformers |
| Soft magnetic ferrite | Medium-low | Low | ≈200℃ | High-frequency (MHz-level) communication devices |
FeNi50 strikes an excellent balance among permeability, temperature stability, and cost, making it the material of choice for medium- to high-frequency soft magnetic applications.
Process Recommendations and Heat Treatment
| Craftsmanship | Recommended particle size | Key parameters | Heat Treatment Recommendations |
|---|---|---|---|
| Powder metallurgy pressing + sintering | -150 mesh / -200 mesh | Pressing at 400–700 MPa, sintering at 1250–1350°C (H₂/vacuum) | Complete annealing at 900–1100°C in an H₂ atmosphere, followed by slow cooling. |
| MIM injection molding | -300 mesh / -500 mesh | Catalytic degreasing + sintering at 1280–1350°C | Annealing is the same as PM; be sure to control the carbon content. |
| SLM 3D printing | -300 mesh | Laser power: 150–300 W; layer thickness: 30–50 μm. | After printing, vacuum annealing is required to restore the magnetic properties. |
* The final magnetic properties depend on the sintering and annealing processes.
End-to-end testing capability
Each batch of FeNi50 powder is analyzed for major elements (Ni, Fe), impurity levels, particle size distribution, oxygen content, and both loose‑packed and tapped densities. A Certificate of Analysis (COA) is provided.
Packaging & Delivery
Powder packaging
Vacuum-sealed in a double-layer aluminum foil pouch (to prevent oxidation), with an outer iron or plastic drum.
Specifications: 1 kg/bag, 5 kg/bag, 22 kg/drum
Export packaging
Export orders are packed in wooden crates or pallets and reinforced to protect against moisture and impact.
Compatible with sea freight, air freight, and international express delivery.
Delivery time
Standard particle size in stock; ships within 3–7 days after order confirmation.
Custom particle size or coating treatment: 7–15 days
Batch Traceability
For each batch, a sample is retained, and the COA report is shipped with the goods.
Supports third-party testing (e.g., SGS)
Free sample
Free samples are provided for process validation.
Small-batch samples; bulk supply upon quality confirmation.
Customized Services
Insulation coating treatment (to reduce high-frequency eddy current losses)
Grain size customization
Shipping documents
COA, MSDS, ingredient list, packing list
Meets export customs clearance requirements and customer in-plant inspection standards.
Technical Support
Provide process parameter guidance for PM, MIM, and SLM.
Assist in resolving issues encountered during use.
Inquire Now for Free Samples
Fill out the form on the right or contact us directly; we will provide product samples, technical data sheets, and price quotes to help you quickly complete your additive manufacturing process validation.
Address: No.39, Liandong Yougu lnd. Park, Bachelor Street,Changsha City,Hunan Province, China.
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Address: No.39, Liandong Yougu lnd. Park, Bachelor Street,Changsha City,Hunan Province, China.
