4J06 nickel-iron Soft Magnetic Alloy , also known as Ni6Fe94, is a precision-engineered material with excellent magnetic softness, high permeability, and low coercive force. This alloy typically contains around 6% nickel, with the balance being iron, which gives it stable magnetic properties and good mechanical strength. It’s specifically designed for applications that require sensitive magnetic performance, such as relay cores, transformer components, electromagnetic sensors, and precision instruments.
At DLX Alloy, we manufacture 4J06 alloy wire with advanced melting and refining technology, ensuring uniform composition, low impurities, and excellent dimensional control. Through strict quality testing and controlled annealing processes, our 4J06 wire maintains stable performance even under demanding operating conditions.
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Excellent Soft Magnetic Properties – High initial and maximum permeability, ideal for fast magnetic response.
Low Coercive Force – Minimizes energy loss during magnetization cycles.
Stable Performance – Maintains consistent magnetic characteristics under long-term operation and thermal cycles.
Good Machinability – Suitable for fine wire drawing and component fabrication.
Reliable Quality Control – DLX ensures tight tolerance in diameter, uniform resistance, and consistent mechanical strength.
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 | - |
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 | - |
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 | - |
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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| Property | 4J06 Alloy (Ni6Fe94) | 4J36 Alloy (Invar Type) | 1J85 Alloy (High Ni) |
|---|---|---|---|
| Nickel Content (%) | 6 | 36 | 80 |
| Density (g/cm³) | 7.9 | 8.1 | 8.7 |
| Electrical Resistivity (μΩ·m) | 0.47 | 0.80 | 0.45 |
| Saturation Magnetic Induction (T) | 1.55 | 1.45 | 0.75 |
| Coercive Force (A/m) | ≤40 | ≤50 | ≤30 |
| Maximum Permeability (μmax) | ≥20000 | ≥15000 | ≥70000 |
| Curie Temperature (°C) | ~700 | ~230 | ~450 |
| Main Application | Relays, Transformers | Precision Components | Magnetic Shields |
Applications
1. Relays and Contactors
4J06 alloy wire is widely used for relay cores and electromagnetic components because of its high permeability and low energy loss. It enables fast magnetic response and stable actuation in both AC and DC circuits.
2. Transformers and Chokes
In small transformers and choke coils, 4J06 wire helps reduce hysteresis loss, improving energy efficiency and response stability.
3. Magnetic Sensors
Used in low-frequency magnetic sensors and signal converters that require high magnetic sensitivity.
4. Precision Electromagnetic Components
Applied in aerospace and instrumentation for its consistent magnetic performance and resistance to aging.
The demand for soft magnetic alloys like 4J06 has been rising with the growth of automation, smart grids, and micro-electromechanical systems (MEMS). Industries such as energy electronics, aerospace, and new energy vehicles increasingly rely on precise magnetic materials to enhance signal control and power efficiency.
In the energy sector, 4J06 alloy plays a crucial role in low-loss electromagnetic devices used in renewable energy systems. In the electronics industry, its fine magnetic response supports miniaturization and high-frequency control.
As industries shift toward high-efficiency and lightweight systems, materials like 4J06 are becoming key enablers of innovation in precision electromagnetics and intelligent manufacturing.
DLX Alloy Company Advantages
At DLX Alloy, our expertise in magnetic materials is backed by modern production facilities and advanced metallurgical control. We ensure every spool of 4J06 wire meets the highest standards for uniformity and reliability.
1. Precision Manufacturing
Our vacuum melting and high-purity refining technologies minimize impurities and ensure stable composition, giving our 4J06 wire excellent repeatability in magnetic behavior.
2. Tailored Solutions
DLX supports customized wire diameters, mechanical strength, and annealing conditions to fit customers’ exact magnetic circuit designs.
3. Rigorous Testing
We employ professional testing methods for permeability, coercive force, and saturation magnetization to ensure every batch meets specification requirements.
4. Global Supply & Consistent Quality
Our 4J06 alloy wires are exported to clients across Asia, North America, and Europe. With consistent delivery timelines and technical support, DLX has become a trusted partner in the precision magnetic materials market.
The global market for soft magnetic alloys is projected to maintain steady growth, driven by renewable energy systems, automotive electrification, and industrial automation. Nickel-iron alloys like 4J06 are increasingly preferred for their cost-efficiency and performance balance compared with higher-nickel grades.
In comparison to high-nickel soft magnetic alloys, 4J06 offers:
Lower material cost with adequate magnetic softness for most relay and transformer applications.
Better mechanical durability, reducing breakage during wire drawing and device assembly.
Higher thermal stability, suitable for devices exposed to moderate heat cycles.
With the development of miniature relays, electronic transformers, and power sensors, 4J06 is expected to remain a stable choice for designers seeking reliable magnetic materials.
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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We support all kinds of testing:
1. What is 4J06 alloy mainly composed of?
It’s a nickel-iron alloy with about 6% nickel and the balance iron.
2. What are the magnetic characteristics of 4J06?
It has high initial and maximum permeability, low coercive force, and strong magnetic softness.
3. What are the common applications of 4J06 wire?
Used in relay cores, transformer components, magnetic sensors, and precision electromagnetic devices.
4. How does 4J06 compare to high-nickel alloys like 1J85?
4J06 offers a more economical choice with moderate permeability and better mechanical strength.
5. Can 4J06 operate under high temperature?
Yes, it performs reliably up to around 500–700°C depending on the application and heat treatment.
6. Does DLX provide customized wire sizes?
Yes, DLX manufactures wires in various diameters and mechanical conditions tailored to client needs.
7. What is the production form available?
DLX supplies 4J06 as drawn wire, strips, or rods, suitable for electromagnetic device production.
8. How does DLX ensure product consistency?
By using vacuum melting, precision annealing, and full magnetic property testing for every production batch.
Conclusion
The 4J06 nickel-iron soft magnetic alloy wire represents a balanced solution between cost and performance for the electronics and energy industries. Its combination of high permeability, low coercive force, and strong mechanical integrity makes it ideal for relays, transformers, and precision magnetic components.
With DLX Alloy’s advanced production technology and strict quality management, customers can rely on consistent magnetic performance and reliable global supply. As industries evolve toward more efficient and miniaturized systems, DLX continues to provide innovative material solutions that empower the next generation of electromagnetic applications.
