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 4J36 Invar Wire is a high-performance Precision Alloy designed for electronic devices that require stable performance and low thermal expansion. Manufactured with exceptional precision and stringent quality control, this alloy wire is highly regarded for its consistent diameter and uniform structure. It offers excellent tensile strength, flexibility, and durability, making it ideal for a range of demanding applications in industries such as electronics, aerospace, and medical technology.
With its remarkable resistance to heat, corrosion, and wear, the 4J36 Invar Wire ensures long-lasting reliability, even in harsh operating conditions. Its low coefficient of thermal expansion makes it particularly useful in situations where dimensional stability is essential, such as in sensitive electronic components. Whether for creating intricate electrical connections, precision sensors, or high-strength filaments, this wire is a vital material in advancing cutting-edge technologies and ensuring dependable performance in complex systems.
Parameter | Invar 4J36 | Super Invar ( 4J32 ) | Stainless Steel (AISI 316) |
|---|---|---|---|
Composition | 64% Fe, 36% Ni | 64% Fe, 31% Ni, 5% Co | Fe, 16% Cr, 10% Ni, 2% Mo |
CTE (20–100°C) | ~1.2 × 10⁻⁶/°C | ~0.63 × 10⁻⁶/°C | ~16 × 10⁻⁶/°C |
Thermal Stability Range | -50°C to 100°C | -60°C to 80°C | Wide range, less precise |
Density | 8.05 g/cm³ | 8.15 g/cm³ | 8.0 g/cm³ |
Yield Strength | 260 MPa | 276 MPa | 290 MPa |
Tensile Strength | 450 MPa | 483 MPa | 580 MPa |
Corrosion Resistance | Moderate, weak in chloride environments | Moderate, weak in chloride environments | Excellent, ideal for marine use |
Applications | Aerospace, composite tooling, optics | Precision instruments, aerospace | Marine, structural, chemical processing |
High Precision: The wire is produced with extremely tight tolerances, ensuring consistent diameter and mechanical properties. This level of precision guarantees accurate and reliable performance, especially in applications where even slight variations can lead to significant issues.
Superior Mechanical Properties: With excellent tensile strength, fatigue resistance, and ductility, 4J36 Invar Wire is able to withstand high stress, repeated bending, and harsh operating conditions without failure or deformation.
Tailored Alloy Compositions: We can customize the alloy composition based on specific application needs. This adaptability allows us to optimize the wire's electrical, magnetic, and thermal properties, providing an ideal solution for various industries.
High Surface Quality: The wire is designed with a smooth, clean surface finish, reducing friction and enhancing performance in applications like wire drawing, winding, and electrical contacts.


The 4J36 Invar Wire is a versatile material with applications across several critical industries:
Electronics Industry: In the electronics sector, the wire is used in the production of micro springs, connectors, and sensors. Its high precision and excellent electrical conductivity make it perfect for ensuring stable electrical connections and accurate sensing, especially in sensitive devices.
Aerospace and Defense: The aerospace and defense industries rely on 4J36 Invar Wire for high-performance components like aircraft engine parts, missile guidance systems, and communication equipment. The wire’s ability to withstand extreme stress and temperatures ensures safety and reliability in these demanding applications.
Medical Devices: In the medical field, the wire is used in manufacturing surgical instruments, orthopedic implants, and cardiovascular devices. Its corrosion resistance, high strength, and biocompatibility make it suitable for applications that require both durability and patient safety.
Automotive Industry: The wire is used in various automotive applications, such as fuel injection systems, sensors, and electrical wiring. Its high durability and reliability help improve vehicle efficiency and reduce maintenance costs.


Low Thermal Expansion: The 4J36 Invar Wire has a low coefficient of thermal expansion, making it highly stable under temperature changes. This feature is essential for electronic devices and precision instruments that require exact dimensions and reliability.
High Strength and Durability: With superior tensile strength and resistance to wear and corrosion, the 4J36 Invar Wire offers outstanding durability in both high-stress and harsh environmental conditions.
Excellent Magnetic Properties: The wire exhibits excellent magnetic permeability and low coercivity, making it ideal for use in various electronic devices such as transformers, inductors, and sensors.
Precision Manufacturing: The wire is manufactured with exceptional accuracy, ensuring consistency in its mechanical properties and performance, even in the most demanding applications.
Versatility in Applications: Due to its low expansion and high mechanical properties, the 4J36 Invar Wire is highly adaptable to a wide range of industries, including electronics, aerospace, medical devices, and automotive sectors.
We provide secure and customized packaging for all orders of 4J36 Invar Wire, ensuring that your products arrive in excellent condition. Our shipping services are fast and reliable, allowing you to receive your order promptly.



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.

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FAQ
1. 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 such as May 1-3, October 1-7, and Chinese New Year. Please email us during these holidays if you have any questions.
2. Do you provide free samples?
Yes, we provide free samples for testing purposes. The buyer is responsible for covering the shipping costs.
3. What are your payment terms?
We accept multiple payment methods, including T/T, L/C, D/A, D/P, Western Union, MoneyGram, and PayPal.
4. What is the lead time?
The lead time for samples is typically 7 days after payment confirmation.
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