As MH&W International continuously strives to be the leader for offering powerful solutions in the magnetics industry, MH&W has partnered with a leading OEM supplier of amorphous cores, custom nanocrystalline cores, and 80% nickel iron alloy cores. The core configurations include toroid’s, gapped toroid’s, cut cores, and specialty stampings. With the addition of these products, MH&W will be able to offer the marketplace competitive prices on low frequency magnetics designs in addition to the high frequency magnetics designs currently being supported.
Fe-based Amorphous Ribbon
Applications:
- Medium-frequency transformer cores in heating equipment.
- Toroidal gapless cores as SMPS output inductors and differential input inductors.
- Toroidal gapless cores as noise prevention chokes in car audio and navigation systems.
- Toroidal gap cores for PFC used in air conditioning and plasma TV.
- High-frequency rectangular cut cores as output inductors and transformers in SMPS, UPS, etc.
- Toroidal gapless cores as pulse transformers for driving IGBTs, MOSFETs, and GTOs.
- Amorphous stators and rotors in high power density speed-variable electric.
Characteristics:
- High saturation induction of 1.56 Tesla-Reducing component volume.
- Low coercivity – Increasing component efficiency.
- Low core loss – Reducing temperature rise in devices.
- Variable permeability by different heat treatments – Satisfying various application requirements.
- Excellent thermal stability – Highest service temperature of 130°C.
Power Frequency loss and excitation Power after annealing with Longitudinal Magnetic Field
Physical Properties:
| Saturation Induction (Bs) | 1.56T | Hardness Hv | 960kg/mm2 |
| Curie Temperature (Tc) | 410 °C | Density | 7.18g/cm3 |
| Crystallization Temperature (Tx) | 535 °C | Resistivity | 130 µ Ω-cm |
| Saturation Magnetostriction | 27 X 10-6 |
Comparison of characteristics between
Fe-based Amorphous ribbon and cold-rolled silicon steel sheet
| Performance | Amorphous | Silicon Steel |
| Saturation Magnetic Inductance (T) | 1.56 | 2.03 |
| Coercivity (A/m) | <4 | <30 |
| Maximum Permeability | >25 X 104 | 4 X 104 |
| Core Loss (W/kg) | 50Hz, 1.3T, P<0.2 | 50Hz, 1.7T, P=1.2 |
| Magnetizing Power (VA/kg) | 50Hz, 1.3T, P<0.5 | 50Hz, 1.7T, P<0.83 |
| Stacking Factor | 0.84 | 0.95 |
| Magnetostriction (X10-6) | 27 | n/a |
| Resistivity (µ Ω-cm) | 130 | 45 |
| Density (g/cm3) | 7.18 | 7.65 |
| Crystallizationi Temperature (°C) | 535 | n/a |
| Curie Temperature (°C) | 415 | 746 |
| Strength (Mpa) | 1500 | 343 |
| Hardness (HV) | 900 | 181 |
| 300 | 300 | 300 |
Specifications:
| Width (mm) | Thickness (µm) | Manufacturing Method |
| 5 ± 0.05 | 25 ± 2 | Slitted Ribbon |
| 8 ± 0.05 | 25 ± 2 | Slitted Ribbon |
| 10 ± 0.05 | 25 ± 2 | Slitted Ribbon |
| 15 ± 0.05 | 25 ± 2 | Slitted Ribbon |
| 20 ± 0.1 | 25 ± 2 | Slitted Ribbon |
| 25 ± 0.1 | 25 ± 2 | Slitted Ribbon |
| 30 ± 0.1 | 25 ± 2 | Slitted Ribbon |
| 40 ± 0.1 | 25 ± 2 | Slitted Ribbon |
| 50 ± 0.1 | 25 ± 2 | Slitted Ribbon |
| 60 ± 1 | 25 ± 2 | Casted Ribbon |
| 100 ± 1 | 25 ± 2 | Casted Ribbon |
| 142 ± 1 | 25 ± 2 | Casted Ribbon |
| 170 ± 1 | 25 ± 2 | Casted Ribbon |
Note: Other specifications can be provided based on customer requirements