The 4J44 Nickel-Iron Alloy Plate, also known as Ni44Fe56, is a high-performance soft magnetic material specifically engineered for magnetic circuits, transformers, and high-frequency electromagnetic applications. Its combination of high permeability, low coercivity, and excellent thermal stability makes it an ideal choice for precision magnetic assemblies.
At DLX Alloy, we specialize in producing premium 4J44 plates with uniform chemical composition, precise thickness, and superior surface finish, ensuring reliable performance in critical magnetic components where efficiency, consistency, and durability are essential.
4J44 is a nickel-iron soft magnetic alloy, containing approximately 44% nickel and 56% iron. Its main advantage lies in its high magnetic permeability, which allows efficient magnetic flux conduction with minimal energy loss, making it perfect for transformers, inductors, relays, and precision magnetic circuits.
Key material properties include:
-
High magnetic permeability for optimal flux conduction
-
Low coercivity to reduce energy losses in AC and DC magnetic circuits
-
Excellent thermal stability for consistent performance under varying temperatures
-
Corrosion resistance for long-term durability in industrial and electronic environments
-
Machinability and processability for precision forming, cutting, and finishing
DLX Alloy uses vacuum induction melting, precision rolling, and controlled annealing to produce 4J44 plates with uniform microstructure, minimal internal stress, and excellent surface quality, critical for soft magnetic applications.
Alloy Composition Table
|
Alloy Grades |
C |
S |
P |
Mn |
Si |
Ni |
Cr |
Co |
Mo |
Cu |
Al |
Nb |
Fe |
Other Elements |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
1J06 |
0.04 |
0.015 |
0.015 |
≤0.10 |
≤0.15 |
- |
- |
- |
- |
- |
5.5-6.5 |
- |
Rest |
- |
|
1J12 |
0.03 |
0.015 |
0.015 |
≤0.10 |
≤0.15 |
- |
- |
- |
- |
- |
11.6-12.4 |
- |
Rest |
- |
|
1J17 |
0.03 |
0.02 |
0.02 |
≤0.60 |
≤0.20 |
- |
15.5-16.5 |
- |
- |
- |
- |
- |
Rest |
- |
|
1J18 |
0.03 |
0.02 |
0.02 |
0.3-0.7 |
≤0.15 |
0.5-0.7 |
17-18.5 |
- |
- |
- |
- |
- |
Rest |
Ti: 0.3-0.7 |
|
1J22 |
0.04 |
0.02 |
0.02 |
≤0.3 |
≤0.3 |
≤0.5 |
- |
49-51 |
- |
≤0.2 |
- |
- |
Rest |
V: 0.8-1.8 |
|
1J30 |
0.04 |
0.02 |
0.02 |
≤0.40 |
≤0.30 |
29.5-30.5 |
- |
- |
- |
- |
- |
- |
Rest |
- |
|
0.03 |
0.02 |
0.02 |
≤0.60 |
≤0.20 |
35.0-37.0 |
- |
- |
- |
- |
- |
- |
Rest |
- |
|
|
1J38 |
0.03 |
0.05 |
0.02 |
0.3-0.6 |
0.15-0.3 |
37.5-38.5 |
12.5-13.5 |
- |
- |
- |
- |
- |
Rest |
- |
|
1J46 |
0.03 |
0.02 |
0.02 |
0.6-1.1 |
0.15-0.3 |
45.0-46.5 |
- |
- |
- |
≤0.2 |
- |
- |
Rest |
- |
|
0.03 |
0.02 |
0.02 |
0.3-0.6 |
0.15-0.3 |
49-50.5 |
- |
- |
- |
≤0.2 |
- |
- |
Rest |
- |
|
|
1J51 |
0.03 |
0.02 |
0.02 |
0.3-0.6 |
0.15-0.3 |
49-50.5 |
- |
- |
- |
≤0.2 |
- |
- |
Rest |
- |
|
1J54 |
0.03 |
0.02 |
0.02 |
0.3-0.6 |
1.1-1.4 |
49.5-51 |
3.8-4.2 |
- |
- |
≤0.2 |
- |
- |
Rest |
- |
|
1J76 |
0.03 |
0.02 |
0.02 |
0.3-0.6 |
0.15-0.3 |
75.0-76.5 |
1.8-2.2 |
- |
- |
4.8-5.2 |
- |
- |
Rest |
- |
|
1J77 |
0.03 |
0.02 |
0.02 |
0.3-0.6 |
0.15-0.3 |
75.5-78 |
- |
- |
3.9-4.5 |
4.8-6.0 |
- |
- |
Rest |
- |
|
1J79 |
0.03 |
0.02 |
0.02 |
0.6-1.10 |
0.3-0.5 |
78.5-80.0 |
- |
- |
3.8-4.1 |
≤0.2 |
- |
- |
Rest |
- |
|
1J80 |
0.03 |
0.02 |
0.02 |
0.6-1.10 |
1.1-1.5 |
79.0-81.5 |
2.6-3.0 |
- |
- |
≤0.2 |
- |
- |
Rest |
- |
|
1J85 |
0.03 |
0.02 |
0.02 |
0.3-0.60 |
0.15-0.3 |
79.0-81.0 |
- |
- |
4.8-5.2 |
≤0.2 |
- |
- |
Rest |
- |
|
1J87 |
0.03 |
0.02 |
0.02 |
0.3-0.6 |
≤0.3 |
78.5-80.5 |
- |
- |
1.6-2.2 |
- |
- |
6.5-7.5 |
Rest |
- |
For more details, pls directly contact us.
4J44 alloy plates are widely used in applications where magnetic performance and thermal stability are critical:
-
Transformers: core laminations for power and signal transformers
-
Inductors and reactors: energy-efficient magnetic components
-
Relays and switches: soft magnetic cores for electromagnetic devices
-
Precision magnetic circuits: sensors, actuators, and measurement devices
-
High-frequency applications: efficient conduction of magnetic flux with minimal losses
-
Electromechanical devices: motors, generators, and solenoids requiring precise magnetic characteristics
DLX Alloy offers customizable plate thicknesses, dimensions, and surface finishes, ensuring seamless integration into complex assemblies for magnetic circuit applications.
Industry Trends
The demand for soft magnetic alloy plates like 4J44 is increasing due to the growth of energy-efficient electronics, high-frequency transformers, and precision magnetic devices.
Key industry trends affecting 4J44 include:
-
Miniaturization of magnetic components, requiring high-permeability materials to maintain efficiency in smaller cores
-
High-frequency and low-loss transformer applications, necessitating soft magnetic materials with low coercivity
-
Renewable energy technologies, including electric vehicles and solar inverters, requiring efficient magnetic circuits
-
Industrial automation and robotics, where precision actuators and sensors depend on high-performance magnetic alloys
DLX Alloy addresses these industry needs by producing 4J44 plates with tight chemical control, uniform microstructure, and precise dimensional tolerances, ensuring consistent performance in critical magnetic circuits.
| Property / Alloy | 4J44 | 4J50 | 1J50 | 4J47 |
|---|---|---|---|---|
| Nickel Content (%) | 44 | 50 | 50 | 47 |
| Iron Content (%) | 56 | 50 | 50 | 53 |
| Permeability (μ) | 8500–12000 | 10000–14000 | 9000–13000 | 8000–11000 |
| Coercivity (A/m) | <8 | <6 | <7 | <8 |
| Saturation Flux Density (T) | 1.6 | 1.55 | 1.55 | 1.5 |
| Thermal Stability | Very Good | Very Good | Good | Good |
| Corrosion Resistance | Moderate | Moderate | Good | Moderate |
| Typical Applications | Transformers, inductors, relays, precision magnetic circuits | Magnetic circuits, high-permeability cores | Transformer cores, precision sensors | Magnetic shielding, sensor cores |
| Processability | Good | Good | Good | Good |
The table highlights that 4J44 offers a balanced combination of high permeability, low coercivity, and thermal stability, making it ideal for efficient and reliable magnetic circuits.
Why Choose DLX Alloy
DLX Alloy combines advanced metallurgical expertise with precision production technology to deliver superior 4J44 plates.
Our advantages include:
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Vacuum induction melting to ensure chemical homogeneity and minimal impurities
-
Precision rolling and controlled annealing to optimize microstructure and reduce internal stress
-
Strict dimensional control for seamless integration into magnetic assemblies
-
Custom surface finishes suitable for coating, insulation, or lamination
-
Comprehensive testing including magnetic, mechanical, and chemical analysis
These advantages ensure that DLX 4J44 plates are consistent, durable, and reliable, meeting the demands of high-performance transformers, inductors, and magnetic circuits.
DLX Production and Quality Assurance
DLX Alloy employs state-of-the-art production facilities and rigorous quality control:
-
Vacuum induction melting for chemical uniformity
-
Precision rolling and controlled annealing for uniform thickness and stress relief
-
Dimensional inspections for flatness, thickness, and surface finish
-
Magnetic and mechanical property verification for every batch
DLX Alloy also offers customized 4J44 plates tailored to the specific requirements of magnetic circuits, transformers, and electromechanical devices, ensuring reliable integration and performance.
Sustainability and Market Outlook
The market for soft magnetic alloy plates continues to grow due to the expansion of energy-efficient electronics, precision magnetic devices, and renewable energy applications. Components require materials with high permeability and low coercivity to maximize efficiency and performance.
DLX Alloy incorporates sustainable production practices, including scrap recycling, energy optimization, and waste reduction. With the increasing adoption of high-efficiency transformers, precision sensors, and electromechanical devices, DLX is positioned to supply high-quality, reliable 4J44 plates to global markets.
4J44 Nickel-Iron Soft Magnetic Alloy Plate is essential for transformers, inductors, relays, and precision magnetic circuits, providing high permeability, low coercivity, and excellent thermal stability. Its properties ensure efficient, reliable, and long-lasting performance in demanding applications.
DLX Alloy guarantees high-quality 4J44 plates with consistent chemical composition, precise dimensional control, and superior magnetic performance, supporting customers in electronics, renewable energy, and industrial automation industries worldwide.
About Us:
Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications.
For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.
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FAQs:
1. What is the composition of 4J44?
Approximately 44% nickel and 56% iron, designed for high permeability and low coercivity in magnetic circuits.
2. What is the main benefit of 4J44 plates?
Efficient magnetic flux conduction with low energy losses in transformers, inductors, and relays.
3. Which industries use 4J44 plates?
Electronics, renewable energy, industrial automation, precision instrumentation, and electromechanical devices.
4. How does 4J44 compare to 4J50?
4J50 offers higher permeability and slightly lower coercivity, while 4J44 provides a balanced combination suitable for general magnetic circuits.
5. Can DLX Alloy customize plate sizes and thickness?
Yes, DLX provides tailored dimensions, thicknesses, and surface finishes for specific assembly needs.
6. Is 4J44 suitable for high-frequency applications?
Yes, its low coercivity and high permeability make it ideal for AC and high-frequency magnetic circuits.
7. What heat treatment improves 4J44 properties?
Controlled annealing reduces internal stress, optimizes permeability, and stabilizes magnetic performance.
8. Does DLX Alloy provide testing reports?
Yes, each batch includes magnetic, mechanical, and chemical analysis documentation.
