Low Expansion Kovar 4J29 Nickel-Iron-Cobalt Alloy Rod for Aerospace and Defense

The 4J Series Precision Alloys are high-performance materials composed primarily of nickel and iron, designed for high-tech applications that require exceptional thermal expansion properties. These alloys feature an extremely low coefficient of thermal expansion (CTE), ensuring dimensional stability across a broad temperature range. This makes them perfect for applications that demand precise alignment and minimal distortion under varying environmental conditions.

4J Series alloys are known for their robust mechanical properties, including high strength and toughness, making them ideal for use in industries that require high levels of reliability and durability. They are commonly employed in electronics, aerospace, optical systems, and other sectors that require high-precision components. The alloys excel in environments where temperature fluctuations, mechanical stress, and corrosion are present, offering a durable solution for long-term performance.

Key Features

• Low Coefficient of Thermal Expansion: Ensures dimensional stability across a wide temperature range, preventing thermal expansion issues in sensitive applications.

• High Strength and Toughness: Offers exceptional mechanical properties to withstand significant stresses and pressures.

• Superior Corrosion Resistance: Excellent resistance to corrosion and oxidation, making them ideal for harsh environments.

• Precision and Accuracy: Designed to maintain tight tolerances, ensuring reliable performance in high-precision applications.

• Weldability and Machinability: Can be easily welded and machined for a wide range of manufacturing needs.

Application Fields

4J Series Precision Alloys are utilized in a variety of high-tech industries, including:

• Electronics: Widely used for glass-to-metal seals in vacuum tubes, sensors, and other critical electronic components that require stability under temperature variations.

• Aerospace: Ideal for manufacturing precision instruments and components that must maintain structural integrity and performance under extreme temperature and mechanical stress.

• Optical Systems: Commonly used in optical system components, where maintaining precise alignment is essential even under temperature changes.

• Medical Devices: Used in medical sensors and diagnostic equipment that require accurate temperature control and stability.

• Industrial Equipment: Suitable for components used in high-precision manufacturing environments.

Manufacturing Process

The production process of 4J Series Precision Alloys involves several stages to ensure high-quality material performance:

1. Melting: High-purity raw materials are melted in advanced furnaces to form the base alloy. This process ensures a uniform composition and eliminates impurities.

2. Casting: The molten alloy is cast into ingots or billets, which are then heat-treated to improve the uniformity of the material.

3. Hot Rolling: The ingots are hot-rolled to the required dimensions, refining the alloy's grain structure and improving its mechanical properties.

4. Annealing: The alloy is annealed at controlled temperatures to relieve internal stresses and improve ductility, ensuring ease of machining and fabrication.

5. Machining and Finishing: The alloy is precision-machined into the final product shape, followed by surface treatments such as polishing or coating to enhance its properties.

6. Inspection: Rigorous quality control checks are conducted to ensure that all products meet the desired specifications and standards.

Advantages

• Exceptional Dimensional Stability: The low CTE property ensures that the alloy maintains its shape and size even under significant temperature fluctuations, making it ideal for high-precision applications.

• High-Performance in Harsh Environments: The alloy’s resistance to corrosion and oxidation extends its service life, even in challenging industrial environments.

• Versatility Across Industries: Whether used in aerospace, electronics, or optical systems, the 4J alloys offer versatility and reliability in a wide range of applications.

• Cost-Effective Solution: Despite their high initial cost, the long service life and reduced maintenance needs of 4J alloys make them a cost-effective solution for high-precision, high-stress environments.

• Customizable for Specific Needs: The alloys can be customized in various shapes, sizes, and surface finishes to meet specific application requirements.

• 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.

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• 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.

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• Client Visits

• Building Stronger Partnerships

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• We support all kinds of testing:

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FAQ

Q1: What is the working time and contacting information?
A1:

• Working Hours: Monday to Saturday, 7:30 AM to 5:00 PM (Beijing time, GMT+08:00).

• We have public holidays during May 1-3, Oct 1-7, and Chinese New Year. Please email us during these periods for any inquiries.

Q2: Do you provide free samples?
A2: Yes, we can provide a free sample for testing. The buyer is responsible for covering all shipping costs.

Q3: What are your payment terms?
A3: We accept various payment methods, including T/T, L/C, D/A, D/P, Western Union, MoneyGram, and PayPal.

Q4: What is the lead time for orders?
A4:

• Sample Lead Time: Typically 7 days after payment is confirmed.

• Bulk Orders: The lead time for bulk orders is usually 10-30 days, depending on the order quantity.

Q5: How do I place an order or get more information?
A5: For detailed information or to place an order, you can reach us through the following contact methods:

• Email: sales8@dlx-alloy.com

• Phone/WhatsApp: +86 19906119641

Our professional team will assist you with all your inquiries and ensure the best product solutions for your needs.