12Alfenol / Hypermal / Yu12 – High-Quality Aluminum-Iron Alloy
General Characteristics
12Alfenol (also known as Hypermal or Yu12) is a specialized iron-based alloy with aluminum addition, featuring unique combination of magnetic and mechanical properties. Developed for high-frequency electromagnetic devices.
Chemical Composition
Main components:
Iron (Fe): 86-88%
Aluminum (Al): 11-13%
Other elements: <1% (Mn, Si, C)
Magnetic Properties
Initial permeability (μi): 3,500-5,000
Maximum permeability (μmax): 35,000-50,000
Coercive force (Hc): 4-8 A/m
Saturation induction (Bs): 0.75-0.85 T
Resistivity: 145 μΩ·cm
Mechanical Properties
Tensile strength: 450-550 MPa
Brinell hardness (HB): 130-160
Density: 6.7 g/cm³
Melting point: ≈1500°C
Main Applications
High-frequency devices:
HF transformer cores
Inductors and coils
Switching power supplies
Acoustic systems:
Loudspeaker magnetic circuits
Pickup devices
Special applications:
Position sensors
Electromagnetic shields
Magnetostriction devices
Key Advantages of 12Alfenol
✔ High magnetic permeability in HF range
✔ Low eddy current losses
✔ Excellent corrosion resistance
✔ Good mechanical properties
✔ Stable parameters when heated
Comparative Characteristics
| Parameter | 12Alfenol | Permalloy | Electrical Steel |
|---|---|---|---|
| Permeability | 35-50k | 50-200k | 2-5k |
| Resistivity | 145 μΩ·cm | 55 μΩ·cm | 120 μΩ·cm |
| Bs (T) | 0.8 | 0.7 | 2.0 |
| Cost | Medium | High | Low |
Delivery Forms 12Alfenal
| 12Alfenal wheel | Diameter 4-300mm |
| 12Alfenal sheet | Thickness 0.5-20mm |
| 12Alfenal Tape | Thickness 0.2-2mm |
| 12Alfenal strip | Thickness 10-50mm |
| 12Alfenal wire | Diameter 0.5-9mm |
| 12Alfenal Tube | – Hot Rolled Round Tube diameter 38 or more up to 244.5 mm, thickness from 3 to 25 mm -Cold drawn round tube diameter from 6 to 219.1mm thickness from 0.9 to 14.2mm |
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