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

Precision alloy wire is an exceptional material renowned for its superior mechanical and physical properties. Manufactured with meticulous precision and rigorous quality control, it features a fine diameter and a uniform structure, delivering exceptional tensile strength and flexibility. This alloy wire exhibits outstanding resistance to corrosion, heat, and wear, making it highly versatile for applications across industries such as electronics, aerospace, and medical technology. It is ideal for creating intricate electrical connections, precision sensors, and high-strength filaments, playing a pivotal role in advancing cutting-edge technologies and ensuring reliable performance in complex systems.
Parameter | 4J33 Ni-Co | 4J06 Fe-Ni-Cr | Standard Fe-Ni (Invar) |
|---|---|---|---|
Composition | 35% Ni, 17% Co, 48% Fe | 42% Ni, 6% Cr, 52% Fe | 36% Ni, 64% Fe |
CTE (ppm/°C, 20-450°C) | ~4.7 | ~5.9 | ~1.2–1.5 |
Temperature Range | -40°C to 450°C | -40°C to 400°C | -50°C to 230°C |
Curie Temperature | ~430°C | ~370°C | ~279°C |
Yield Strength (MPa) | ~340 | ~350 | ~260–300 |
Tensile Strength (MPa) | ~520 | ~550 | ~450–550 |
Density (g/cm³) | 8.27 | 8.15 | 8.05 |
Applications | Semiconductor packaging, vacuum tubes | Automotive sensors, spark plug seals | Precision instruments, thermostats |
Oxidation Resistance | Excellent | Excellent | Moderate |
High Precision: Manufactured with tight tolerances, ensuring consistent diameter and mechanical properties for reliable performance.
Superior Mechanical Properties: High tensile strength, fatigue resistance, and ductility, enabling the wire to endure harsh operating conditions.
Custom Alloy Composition: Tailored alloy compositions optimized for specific electrical, magnetic, and thermal properties.
Smooth Surface Finish: Clean, smooth finish reduces friction and improves performance in applications such as wire-drawing, winding, and electrical contacts.


Electronics Industry:
The precision alloy wire is used in producing micro-springs, connectors, and sensors. Its high precision and good electrical conductivity make it an ideal choice for these applications, ensuring stable electrical connections and accurate sensing.
Aerospace & Defense:
The 4J36 , 4J29 , and 4J33 alloys are commonly used in critical components such as aircraft engine parts, missile guidance systems, and communication equipment. The wire’s ability to withstand high temperatures, extreme stress, and harsh environments ensures safety and reliability in demanding aerospace applications.
Medical Devices:
Precision alloy wire plays a key role in the production of surgical instruments, orthopedic implants, and cardiovascular devices. Its biocompatibility, high strength, and corrosion resistance make it suitable for use in medical devices, ensuring patient safety and well-being.
Automotive Industry:
This alloy wire is used in fuel injection systems, sensors, and automotive wiring. Its high-performance properties help improve vehicle efficiency, reliability, and durability, reducing maintenance costs and enhancing overall performance.

The manufacturing process of 4J36, 4J29, and 4J33 Precision Alloy Round Wire involves several key steps:
Raw Material Selection: High-quality raw materials are carefully chosen to meet the required chemical composition for each specific application.
Alloy Formation: The alloying elements are mixed and processed to achieve the desired mechanical and magnetic properties.
Wire Drawing: The alloy is drawn into fine wire with precise diameters, ensuring uniformity and high mechanical strength.
Heat Treatment: The wire undergoes heat treatment to enhance properties like strength, ductility, and corrosion resistance.
Quality Control: Each wire is thoroughly tested for consistency in diameter, mechanical properties, and performance characteristics before packaging.

High Thermal Stability: Able to maintain performance even under high-temperature conditions, making it ideal for aerospace and industrial applications.
Corrosion Resistance: The wire's exceptional corrosion resistance makes it suitable for harsh environments, including marine and chemical industries.
Versatility: Available in various grades and custom sizes, the precision alloy wire can be tailored to suit specific electromagnetic, mechanical, and thermal requirements.
Reliability: Known for its superior mechanical properties, this wire ensures long-lasting performance across demanding applications, reducing the need for frequent maintenance or replacement.



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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What is your working time and contact information?
Monday-Saturday: 7:30 AM - 17:00 PM (Beijing time, GMT+08.00). We have public holidays during May 1-3, Oct 1-7, and Chinese New Year. Please feel free to email us during our holidays if you have any questions.
Do you provide free samples?
Yes, we offer free samples for testing. However, buyers are responsible for all shipping costs.
What are your payment terms?
We accept T/T, L/C, D/A, D/P, Western Union, MoneyGram, and PayPal.
What is your lead time?
Typically, the lead time for samples is 7 days after payment confirmation.
How can I place an order?
To place an order or inquire about more details, please contact us via email or phone. Our team will assist you in choosing the best alloy wire solution for your needs.
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