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Soft Magnetic Alloys – High Permeability, Low Loss Magnetic Materials
Explore our range of soft magnetic alloys including Permalloy (FeNi), 1J22, 1J85, and Co-based high saturation materials. Tailored for transformer cores, relays, sensors, and EMI shielding.
What Is Soft Magnetic Alloy?
Soft magnetic alloys are ferromagnetic materials with high magnetic permeability, low coercive force, and minimal hysteresis loss. These alloys are ideal for:
Fast magnetization and demagnetization cycles
Low energy loss in alternating magnetic fields
Precision magnetic control in electric components
Common Types:
Nickel-Iron (FeNi) Alloys – e.g., 1J85, 1J50 (Permalloy), high μ
Cobalt-Iron (CoFe) Alloys – e.g., 1J22, high saturation flux density (Bs > 2.3T)
Silicon Steel & Amorphous Alloy – sheet/strip for high-frequency transformers
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Optional product specifications
| Property | Details |
|---|---|
| Grades Available | 1J85, 1J50, 1J30, 1J22, 1J36, 1J79, 2J4 |
| Common Names | Permalloy, Mumetal, Supermalloy, Hiperco 50, FeNi80/20 |
| Forms | Strip, foil, rod, sheet, core blanks, wires |
| Typical Thickness | 0.05mm – 2mm (strip/foil) |
| Rod Diameter | Ø3mm – Ø50mm |
| Core Types | Toroidal, E-I, C-core, customized shapes |
| Magnetic Properties | |
| • Max. permeability μm > 10,000 | |
| • Coercive force Hc < 1.0 A/m | |
| • Bs up to 2.35T (CoFe) | |
| Processing State | Cold rolled, annealed, hydrogen annealed |
* Custom slitting, stamping, heat treating & magnetic property test reports available.
Processing & Packaging
Strip slitting ±0.01mm tolerance
Hydrogen atmosphere annealing for high permeability
Insulated coating (oxide layer or epoxy) available
Precision stamping and laser cutting
Vacuum packaging + anti-magnetic shielding box
Laser marking with batch number and magnetization direction
Why Buy From Xishang?
- Wide range of NiFe, CoFe, and Fe-based magnetic alloys
- Core blanks, strip coils, stamped parts & custom geometries
- Hydrogen annealing and magnetic property calibration
- Support for EMI shielding, transformer, sensor & R&D use
- Batch magnetic performance testing (μ, Hc, Bs)
- Low MOQ, fast customization & global shipping
Frequently Asked Questions
Q1: What’s the most common soft magnetic alloy for sensors?
A:
1J85 (FeNi 80/20) and 1J79 are common for precision sensor cores due to their high permeability and low Hc.
Q2: What is the difference between 1J22 and 1J85?
A:
1J22 is a cobalt-based alloy with very high saturation flux density (Bs > 2.3T), ideal for strong magnetic fields. 1J85 is a nickel-iron alloy with ultra-high permeability.
Q3: Do you supply toroidal cores or just raw material?
A:
We supply both. Strip coils, E-I laminations, toroids, rods and machined core blanks are all available.
Q4: How do you guarantee magnetic performance?
A:
We offer test reports for μ, Hc, Bs, and support third-party magnetic calibration if needed.
Q5: Do you offer non-standard sizes or small batch R&D material?
A:
Absolutely. Small MOQ and custom sample preparation are available for labs and OEM prototyping.
Let us know your required grade
From advanced magnetic sensors to efficient EMI shielding, Xishang delivers tailored soft magnetic alloys with precision properties and flexible order quantities.
