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Specialized manufacturer of high temperature alloys, precision alloys and Incoloy,over 20 years.

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Email:sales8@dlx-alloy.com

Add:NO.32 West Taihu Road, Xinbei District, Changzhou, Jiangsu,China

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Precision Alloy Wire

High Grade Low Expansion Iron-Nickel Alloy Wire 4J36 Invar 36
High Grade Low Expansion Iron-Nickel Alloy Wire 4J36 Invar 36
High Grade Low Expansion Iron-Nickel Alloy Wire 4J36 Invar 36

High Grade Low Expansion Iron-Nickel Alloy Wire 4J36 Invar 36

Product Details

Expansion alloy wire banner

Our High Grade Low Expansion Iron-Nickel Alloy Wire 4J36 Invar 36 is a high-performance Precision Alloy designed to meet the most demanding applications where dimensional stability and low thermal expansion are crucial. Known for its outstanding ability to maintain consistent dimensions under varying temperature conditions, this alloy wire is the material of choice for industries that require exacting precision and reliability.

Parameter

Invar 4J36

4J54 Expansion Alloy

Alloy 42 (4J42)

Composition

36% Ni, 64% Fe

54% Ni, 46% Fe

42% Ni, 58% Fe

CTE (ppm/°C, 20-100°C)

~1.2–1.5

~5.1 (20-400°C)

~4.0–4.7 (20-300°C)

Temperature Range

-50°C to 230°C

-40°C to 400°C

-40°C to 300°C

Curie Temperature

~279°C

~430°C

~370°C

Yield Strength (MPa)

~260–300

~350

~310

Tensile Strength (MPa)

~450–550

~560

~520

Density (g/cm³)

8.05

8.24

8.12

Applications

Aerospace tooling, composite molds

Precision molds, optical systems

Semiconductor lead frames, seals

Corrosion Resistance

Moderate

Excellent

Good

Key Features of 4J36 Invar 36 Iron-Nickel Alloy Wire

  • Low Coefficient of Thermal Expansion: The 4J36 Invar 36 alloy features a remarkably low coefficient of thermal expansion (CTE), making it ideal for applications where minimal dimensional change is required under temperature fluctuations. This characteristic makes it perfect for use in precision instruments and systems that must maintain their form and function across wide temperature ranges.

  • High Mechanical Strength: This alloy wire offers excellent tensile strength and ductility, allowing it to withstand mechanical stresses while maintaining its structural integrity. It is particularly beneficial for use in precision applications that involve high forces or constant motion.

  • Exceptional Dimensional Stability: The 4J36 Invar 36 wire ensures that the material will remain stable and retain its shape even when exposed to extreme temperature changes. This makes it perfect for use in industries such as aerospace, optics, and telecommunications where dimensional stability is crucial.

  • Corrosion Resistance: The alloy exhibits good corrosion resistance, which ensures the longevity and durability of the wire even in challenging environmental conditions, enhancing its reliability in both internal and external applications.

Expansion alloy wire details

Expansion alloy wire comparison

Applications of 4J36 Invar 36 Iron-Nickel Alloy Wire

Due to its unique properties, the 4J36 Invar 36 alloy wire is used in a wide range of high-precision industries. Some of its key applications include:

  • Aerospace and Aerospace Instruments: The low thermal expansion properties make it ideal for components in aerospace and aviation, including aircraft instruments, guidance systems, and temperature-sensitive equipment. The wire’s ability to maintain precise dimensions under varying temperatures is crucial for the functionality and safety of aerospace technology.

  • Optical Systems: The 4J36 Invar 36 wire is widely used in optical systems, particularly in telescopes, microscopes, and other high-precision optical devices. Its low expansion rate ensures that optical elements remain aligned, preventing distortion and maintaining the accuracy of measurements.

  • Measurement and Calibration Instruments: The 4J36 Invar 36 alloy is commonly used in measurement devices and calibration systems, where accurate length measurements are essential. Its exceptional dimensional stability makes it perfect for ensuring precision in instruments such as micrometers, gage blocks, and reference standards.

  • Telecommunications: In the telecommunications industry, the alloy is used in temperature-sensitive wiring and cables where stability under a range of temperatures is required to ensure the optimal performance of communication systems.

  • Medical Devices: Due to its biocompatibility and thermal stability, the 4J36 Invar 36 alloy is also used in the production of medical equipment and devices that require consistent, high-quality performance in diverse temperature conditions.

Expansion alloy wire process

Expansion alloy wire application field

Chemical Composition of 4J36 Invar 36 Iron-Nickel Alloy Wire

The 4J36 Invar 36 alloy is primarily composed of iron (Fe) and nickel (Ni), with trace amounts of other elements to enhance its properties. The composition includes:

  • Nickel (Ni): Provides the alloy with its low thermal expansion properties and improves corrosion resistance.

  • Iron (Fe): Forms the base of the alloy and contributes to its strength and thermal stability.

  • Other Alloying Elements: These are included to improve ductility, mechanical strength, and overall durability of the wire, ensuring it performs reliably under extreme conditions.

Packaging & Shipping

Our 4J36 Invar 36 Iron-Nickel Alloy Wire is carefully packaged to ensure it arrives safely and in perfect condition. Each wire is coiled, wrapped in protective material, and securely packed to prevent any damage during transportation.

We provide fast and reliable shipping, with tracking information available for all orders. Delivery times will vary based on the shipping method and destination.

Expansion alloy wire testing equipmentOEM Service

Recommended Products

  • ABOUT US
  • About DLX ALLOY
  • 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.

  • CHANGZHOU DLX ALLOYCHANGZHOU DLX ALLOY

  • About Our factory
  • 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.

  • CHANGZHOU DLX ALLOY

  • We support all kinds of testing:
  • CHANGZHOU DLX ALLOY

FAQ

Q: What are your working hours and contact information?
A: Our working hours are from 7:30 AM to 5:00 PM (Beijing time, GMT+08:00), Monday to Saturday. We observe public holidays during May 1st-3rd, October 1st-7th, and Chinese New Year. If you need assistance during these times, please email us, and we will respond as soon as possible.

Q: Do you offer free samples of the 4J36 Invar 36 Wire?
A: Yes, we can provide free samples for testing. The buyer is responsible for covering the shipping costs.

Q: What are your payment terms?
A: We accept T/T, L/C, D/A, D/P, Western Union, MoneyGram, and PayPal for payment.

Q: What is the lead time for 4J36 Invar 36 Wire?
A: The typical lead time for samples is 7 days after payment confirmation. For bulk orders, lead times will vary depending on quantity and specific requirements.


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