The 4J54 alloy plate represents one of the most advanced high-nickel soft magnetic materials designed for precision instruments and magnetic shielding systems. Known for its ultra-high permeability, stable magnetic characteristics, and low coercive force, it has become a preferred solution in the fields of aerospace, electronics, and metrology. At DLX Alloy, we focus on manufacturing 4J54 plates that deliver consistent performance through advanced melting, refining, and heat treatment processes — ensuring precision and reliability across every batch.
4J54 is a nickel-iron Soft Magnetic Alloy containing approximately 54% nickel. Its balanced composition provides both high saturation magnetic induction (around 1.6T) and excellent magnetic permeability, making it an ideal material for components that demand accuracy and magnetic stability. Unlike low-nickel materials, 4J54 offers superior control over magnetic hysteresis and minimal energy loss, which are critical for high-precision measurement and shielding devices.
DLX Alloy’s 4J54 plates are produced using vacuum induction melting and multiple-stage cold rolling processes to achieve fine grain structure, tight dimensional tolerance, and high magnetic uniformity. Each plate undergoes complete annealing under a hydrogen atmosphere to maximize permeability and minimize internal stress — a key factor that differentiates DLX’s product from common magnetic plates in the market.
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 | - |
1J36 | 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 | - |
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 | - |
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Precision Instruments: Used in sensitive magnetic sensors, galvanometers, and electromagnetic balances where stability and repeatability are critical.
Magnetic Shielding: Protects equipment such as electronic detectors, analyzers, and high-precision circuits from electromagnetic interference (EMI).
Transformers & Inductors: Suitable for medium to low-frequency magnetic cores requiring low energy loss and high flux density.
Medical Devices: Applied in MRI equipment and magnetic field measurement systems for consistent field response.
Defense & Aerospace Systems: Provides dependable performance in high-field environments and fluctuating magnetic fields.
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 53.0–55.0 |
| Iron (Fe) | Balance |
| Manganese (Mn) | ≤0.60 |
| Silicon (Si) | ≤0.30 |
| Carbon (C) | ≤0.03 |
| Phosphorus (P) | ≤0.020 |
| Sulfur (S) | ≤0.020 |
| Property | Unit | Typical Value |
|---|---|---|
| Density | g/cm³ | 8.7 |
| Curie Temperature | °C | ~470 |
| Saturation Flux Density (Bs) | T | 1.6 |
| Maximum Permeability (μmax) | - | ≥50,000 |
| Initial Permeability (μi) | - | 5,000–10,000 |
| Coercive Force (Hc) | A/m | ≤80 |
| Electrical Resistivity | μΩ·cm | 30–40 |
| Hardness | HV | ≤160 |
The global demand for soft magnetic materials like 4J54 is rapidly growing with the expansion of precision instrumentation, automation, and clean energy sectors. As measuring systems and control devices become more compact and sensitive, there’s a rising need for alloys that deliver both high permeability and stable performance under thermal and magnetic variations.
In particular, aerospace, medical, and communication industries are moving toward high-accuracy components with ultra-low magnetic noise. According to data from third-party material research institutions, the usage of high-nickel alloys like 4J54 has increased by over 35% in the past five years, driven by innovation in sensor and shielding technologies.
4J54 is considered one of the few alloys that combine mechanical stability and magnetic precision, giving it an edge in modern instrumentation systems compared to lower nickel content materials.
DLX Alloy Advantage
At DLX Alloy, our production of 4J54 plates is based on real industrial experience and precision engineering. We work closely with laboratories and end-users to ensure our materials meet both design specifications and field performance expectations.
1. Vacuum Refining Precision – Our vacuum melting and refining processes guarantee ultra-low impurity levels, achieving better magnetic softness and stability.
2. Uniform Magnetic Structure – Controlled annealing results in fine-grain, stress-free plates with consistent permeability across the full sheet.
3. Certified Quality Assurance – Independent third-party institutions verify our materials for permeability, Bs, and Hc. Certification reports are available upon request.
4. Tailored Specifications – DLX provides custom thicknesses (0.1–10mm) and sheet sizes for different industrial applications, with guaranteed tolerance control.
5. Advanced Testing and Data Tracking – We use hysteresis graph testing, B-H loop analysis, and flux density measurement to confirm batch-level performance, ensuring each order meets strict standards.
6. Global Export Experience – DLX Alloy has supplied 4J54 to clients in Europe, South Korea, and the U.S. for precision instrument and magnetic shielding projects, with proven results in high-end applications.
| Property | DLX 4J54 Alloy Plate | Standard 4J50 | High-Nickel Alloy (4J79) |
|---|---|---|---|
| Nickel Content (%) | 54 | 50 | 79 |
| Saturation Flux Density (T) | 1.6 | 1.7 | 0.8 |
| Maximum Permeability | ≥50,000 | 40,000 | ≥80,000 |
| Coercive Force (A/m) | ≤80 | ≤100 | ≤40 |
| Curie Temperature (°C) | 470 | 450 | 430 |
| Machinability | Excellent | Good | Moderate |
| Recommended Use | Precision instruments, magnetic shielding | Transformer cores | High-precision sensors |
Interpretation:
DLX’s 4J54 achieves the perfect balance between high permeability and mechanical stability, offering better thermal resistance and manufacturability than 4J79 while outperforming 4J50 in magnetic sensitivity — making it ideal for instrument applications that require precision and low hysteresis loss.
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. Why is 4J54 ideal for precision instruments?
Because of its ultra-high permeability and stable magnetic response, 4J54 minimizes magnetic noise and ensures measurement accuracy in sensitive equipment.
2. How does DLX ensure magnetic uniformity?
Each batch undergoes vacuum annealing in a hydrogen atmosphere to eliminate residual stress and ensure even permeability across the entire plate.
3. Can 4J54 operate under varying temperatures?
Yes. It maintains stable magnetic properties up to approximately 470°C, making it suitable for moderate thermal environments.
4. What size and thickness options are available?
DLX Alloy offers customizable options ranging from 0.1mm to 10mm thickness with precise flatness and surface finish.
5. Does DLX provide certification for magnetic performance?
Yes. All DLX 4J54 plates are accompanied by third-party magnetic property verification and metallographic inspection reports.
6. Is 4J54 easy to process or form?
It offers excellent machinability and can be easily formed or welded using standard techniques, followed by annealing for best magnetic recovery.
7. What’s the difference between annealed and non-annealed 4J54 plates?
Annealed plates have optimized magnetic permeability and lower coercive force, while non-annealed versions are used for applications requiring higher mechanical strength.
8. Can DLX provide design or technical guidance?
Yes. Our engineers assist customers in selecting materials, annealing parameters, and processing techniques for magnetic shielding and core applications.
Industry Validation
Independent tests conducted by a certified material research lab confirmed that DLX’s 4J54 alloy maintains over 98% magnetic repeatability after 100 thermal cycles between -40°C and 150°C. This level of consistency makes DLX’s 4J54 one of the most reliable materials for high-end precision equipment.
Customers in the instrumentation sector reported 15–20% improvement in field stability when switching to DLX-supplied 4J54 plates compared to conventional materials, backed by long-term performance data.
Expert Insight
Through years of production and collaboration with high-end users, DLX Alloy has developed a deep understanding of how microstructure affects magnetic behavior. Our process innovations — such as field-annealing treatment and multi-stage rolling control — have enabled us to achieve superior performance stability and higher saturation levels.
In a rapidly evolving technological landscape, where accurate measurements and reliable shielding are essential, DLX’s 4J54 alloy stands as a trusted choice for instrument manufacturers seeking precision, repeatability, and quality assurance backed by certified results.
