2.4420 (NiFe 44) is a wrought nickel-iron soft magnetic alloy containing approximately 44% iron and a minimum of 53% nickel. It delivers high initial and maximum magnetic permeability combined with high saturation magnetization, making it ideal for applications requiring high sensitivity to weak magnetic fields, such as transducers and totalizing current transformers for residual current devices (RCDs).
1. Product Specifications & Physical DataAvailable Forms: Strip, sheet, plate, bar, rod, wire, laminated cores Specifications: DIN 17745, Werkstoff Nr. 2.4420/2.4425
| Chemical Composition (Weight %) | Value |
|---|
| Nickel (Ni) | 53.0 min. | | Iron (Fe) | 43.0 - 46.0 | | Manganese (Mn) | 0.50 max. | | Silicon (Si) | 0.30 max. | | Carbon (C) | 0.05 max. |
| Physical Properties | Value |
|---|
| Density | 8.3 g/cm³ | | Curie Temperature | ~450°C | | Saturation Magnetization (Bs) | 1.3 - 1.5 T | | Electrical Resistivity | ~0.50 µΩ·m |
2. Operating Conditions & Selection CriteriaNickel Content: 53-56% Ni balances permeability and saturation induction — higher saturation (1.3-1.5 T) than 80% Ni permalloys allows more compact core designs Permeability: High initial and maximum permeability for efficient magnetic coupling Thermal Stability: Stable up to ~200°C; Curie temperature ~450°C Fabrication: Anneal in hydrogen at 1100-1200°C for optimum properties
3. Material Comparison| Property | 2.4420 (NiFe 44) | 2.4530 (80% Ni) | Silicon Steel |
|---|
| Saturation (Bs) | 1.3-1.5 T | 0.75-0.85 T | 1.8-2.0 T | | Permeability | High | Very High | Low | | Resistivity | ~0.50 µΩ·m | ~0.58 µΩ·m | Low |
4. ApplicationsResidual current devices (RCDs) — totalizing current transformers for fault-current circuit breakers Transducers and magnetic sensors Precision relays and instrument transformers High-efficiency motor laminations
For inquiries, technical datasheets, or a competitive quote, contact our sales team. We are ready to support your project with certified 2.4420 (NiFe 44) soft magnetic alloy for RCD transformers, transducers, and precision sensing applications. Contact Us 📧 Email: daisy@zytcsteel.com
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