Welcome to Jiangsu DLX alloy Co., Ltd.
Email:sales8@dlx-alloy.com Mobile/Whatsapp:+86 199 0611 9641
Specialized manufacturer of high temperature alloys, precision alloys and Incoloy,over 20 years.
Whatsapp:+86 199 0611 9641
Email:sales8@dlx-alloy.com
Add:NO.32 West Taihu Road, Xinbei District, Changzhou, Jiangsu,China
Precision Alloy Wire
Product Details

The 4J47 4J49 soft magnetic alloy wire is a high-performance material designed for use in various precision applications. This alloy wire combines exceptional mechanical and physical properties, making it an ideal choice for industries such as electronics, aerospace, and medical technologies. Its precise manufacturing and superior durability ensure reliable performance in demanding environments. In this article, we will explore the key features, applications, manufacturing process, advantages, and more about the 4J47 4J49 alloy wire, as well as answer some frequently asked questions.
Parameter | 4J47 Nickel-Iron Alloy Strip | Other Common Precision Alloys |
|---|---|---|
Thermal Expansion Coefficient | Very low (~4.7 × 10⁻⁶/°C) | Moderate to high |
Max Operating Temperature | Up to 450°C | Typically 250–350°C |
Corrosion Resistance | Excellent | Moderate to good |
Dimensional Stability | Superior | Average to good |
Mechanical Strength | High | Moderate to high |
Machinability | Excellent for precision shaping | Moderate, less precise |
Magnetic Stability | High | Variable |
Cost-Effectiveness | High due to durability | Varies, often lower longevity |
Key Features of 4J47 4J49 Soft Magnetic Alloy Wire
High Magnetic Permeability: The 4J47 and 4J49 alloy wires exhibit excellent magnetic properties, particularly high magnetic permeability, which makes them suitable for use in applications requiring strong magnetic fields.
Excellent Corrosion and Heat Resistance: These alloy wires are resistant to corrosion and high temperatures, making them ideal for high-stress environments such as aerospace and medical devices.
Uniform Diameter and Strength: The wires are manufactured with precision to ensure uniform diameter and consistent tensile strength, contributing to their excellent mechanical properties.
Flexibility: Despite their strength, these wires offer good flexibility, which is crucial for complex designs and delicate applications.


Applications of 4J47 4J49 Soft Magnetic Alloy Wire
The 4J47 and 4J49 alloy wires are used in various high-tech applications, including:
Electronics: Used in the production of precision sensors, electrical components, and high-performance connectors.
Aerospace: These alloys are used in sensitive aerospace applications that demand materials with high resistance to heat and wear.
Medical Devices: Due to their flexibility and resistance to corrosion, these alloy wires are used in the manufacturing of precise medical instruments and devices that require reliability and durability.
Precision Filaments: The fine diameter and high tensile strength make them suitable for applications such as precision filaments and delicate electrical connections.

Manufacturing Process of 4J47 4J49 Soft Magnetic Alloy Wire
The manufacturing process of the 4J47 and 4J49 alloy wires involves several key steps:
Melting & Alloying: The process begins with the melting of high-purity raw materials in an induction furnace, followed by the addition of precise amounts of alloying elements to achieve the desired chemical composition.
Wire Drawing: The molten alloy is then drawn into fine wires using high-precision drawing machines, ensuring uniformity in diameter and mechanical properties.
Annealing: The wire undergoes an annealing process to relieve internal stresses and improve its flexibility and strength.
Testing & Quality Control: Each batch of wires is rigorously tested for magnetic properties, tensile strength, and corrosion resistance. Strict quality control ensures the wires meet international standards.

Advantages of 4J47 4J49 Soft Magnetic Alloy Wire
Superior Performance: The wires’ high magnetic permeability and resistance to heat and corrosion provide superior performance in demanding applications.
Versatility: The 4J47 4J49 alloy wire can be used across a wide range of industries, from electronics to aerospace and medical sectors.
Cost-Effective: Despite their high-end performance, these alloy wires are competitively priced, offering a cost-effective solution for precision applications.
Reliable and Durable: The wires' mechanical strength and resistance to wear make them highly reliable in high-stress and long-life applications.



CHANGZHOU DLX ALLOY CO, LTD was established in 2002 and has got ISO9001 International Quality Management System Certificate and SGS Certificate. Our factory is professional in researching and producing special alloy material. From melting, drawing, heat treatment, finishing and testing .We offer nickel based, copper-based, and iron-based alloys, including super alloy, welding materials, anti-corrosion alloy, Precision Alloy , FeCrAl alloy, NiCr alloy, CuNi alloy, thermocouple and etc, in the form of wire, strip, ribbon, bar, tube, plate.


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. We also provide chemical analysis reports for every FeCrAl alloy, NiCr alloy, and other products purchased.
For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.


FAQ
What is your working time and contact information?
Our working hours are Monday to Saturday from 7:30 AM to 5:00 PM (Beijing time, GMT+08:00). We observe public holidays during May 1-3, October 1-7, and Chinese New Year. If you have any questions during our holidays, feel free to email us.
Do you provide free samples?
Yes, we offer free samples for testing. However, the buyer is responsible for all shipping costs.
What are your payment terms?
We accept multiple payment options, including T/T, L/C, D/A, D/P, Western Union, MoneyGram, and PayPal.
What is your lead time?
For sample orders, the lead time is typically 7 days after payment confirmation. Bulk orders may take longer depending on production volume.
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