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3J9/FeNi50/3J01/1J33/4J29/4J32/4J33/4J45/Invar36
DLX
Bright
ISO9001
5kg
5-20 Days
Industrial Magnet
Nickel Base Alloy
Product Description
4J32 expansion alloy wire is a high-performance Fe-Ni-Co based alloy developed for precision sealing applications, particularly in semiconductor and electronic industries. Its controlled coefficient of thermal expansion closely matches that of glass and ceramic materials, making it ideal for hermetic sealing environments.
Manufactured using advanced melting and drawing processes, 4J32 alloy wire provides superior uniformity, mechanical strength, and stability under thermal cycling. It is widely used in electronic packaging, vacuum devices, and semiconductor components where airtight sealing and material compatibility are critical.
Our 4J32 precision wire is available in various diameters and specifications, ensuring flexibility for diverse industrial requirements while meeting international quality standards.
Controlled coefficient of thermal expansion
Excellent glass-to-metal sealing performance
High dimensional accuracy and stability
Strong resistance to thermal fatigue
Good mechanical strength and ductility
Suitable for high-reliability semiconductor environments
Customizable sizes and surface finishes
Specification
| Size Range | |
| Shape | Size |
| Wire | 0.5-7.5 |
| Rod/bar | 8.0-200 |
| Strip | (0.5-2.5)*(5-180) |
| Tube | custom made |
| Plate | custom made |
| 1j85 Soft Magnetic Alloy of chemical composition | |||||||||
| Item | 1J33 | 3J01 | 3J9 | 4J29 | 4J32 | 4J33 | 4J45 | FeNi50 | Invar36 |
| C | ≤0.05 | ≤0.05 | 0.22-0.26 | ≤0.03 | ≤0.05 | ≤0.03 | ≤0.05 | ≤0.05 | ≤0.1 |
| Mn | ≤0.05 | ≤1.00 | 1.80-2.20 | ≤0.5 | 0.2-0.6 | ≤0.5 | ≤0.8 | ≤0.8 | ≤0.5 |
| Fe | Rest | ||||||||
| P | ≤0.020 | ≤0.020 | ≤0.03 | ≤0.02 | ≤0.02 | ≤0.02 | ≤0.02 | ≤0.02 | ≤0.006 |
| S | ≤0.020 | ≤0.020 | ≤0.020 | ≤0.020 | ≤0.020 | ≤0.020 | ≤0.020 | ≤0.020 | ≤0.04 |
| Si | 0.30-0.6 | ≤0.80 | 1.30-1.70 | ≤0.3 | ≤0.2 | ≤0.3 | ≤0.3 | ≤0.3 | ≤0.35 |
| Ni | 32.8-33.8 | 34.5-36.5 | 9.0-10.5 | 28.5-29.5 | 31.5-33 | 28.5-29.5 | 44.5-45.5 | 49.5-50.5 | 35-38 |
| Al | 1.0-2.0 | 1.00-1.80 | -- | -- | -- | -- | ≤0.1 | ≤0.1 | -- |
| Co | -- | -- | -- | 16.8-17.8 | 3.2-4.2 | 16.8-17.8 | -- | -- | -- |
| Ti | -- | 2.70-3.20 | -- | -- | -- | -- | -- | -- | -- |
| Cu | -- | -- | -- | -- | ≤0.2 | 0.4-0.8 | ≤0.2 | -- | -- |
| Cr | -- | 11.5-13.0 | 19.0-20.5 | ≤0.2 | -- | ≤0.2 | -- | -- | -- |
| Mo | -- | -- | 1.60-1.85 | ≤0.2 | -- | ≤0.2 | -- | -- | -- |
Our Advantage
Semiconductor device packaging
Electronic components and microelectronics
Glass-to-metal sealing applications
Vacuum tubes and hermetic enclosures
Sensors and precision instruments
Integrated circuit (IC) components
DLX Advantage
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.
1.Market Leader - Top 5 in China's nonferrous metal industry
2.Flexible products - Thousands of product specifications,Meet multiple needs of buyers
3.Low MOQ - Can customize samples
4.Short production lead time，fast delivery of whole cabinet
5.Professional inspection equipment - Before delivery, we will use spectrometers, tensile testers and other professional equipment to conduct a comprehensive inspection of the products to ensure that the goods are qualified for acceptance
6.Professional business team - Quickly responds to customer inquiries,24-hour professional quotation online The salesperson will follow the customer's requirements for the use of the product,Professionally recommend more appropriate performance and price products to customers
7.Intact packaging - Packaging according to customer needs.You can customize wooden boxes to ensure that the goods arrive at the destination in good condition
8.Various payment methods - Facilitate customer payment
9.Get good reviews from customers - Old customers have long-term cooperation,The longest is more than 7 years
10.Received various awards - Google is very recognized by us,They give us awards every year
FAQ
A: 4J32 is a Fe-Ni-Co expansion alloy designed for precision sealing, especially where matching thermal expansion with glass or ceramics is required.
A: It provides stable thermal expansion and excellent sealing compatibility, ensuring reliable hermetic performance in semiconductor devices.
A: The wire is available in a range of diameters and can be customized to meet specific technical requirements.
A: Yes, it is specifically designed for glass-to-metal sealing applications due to its matched expansion properties.
A: Yes, we offer customization in size, tolerance, and surface condition based on customer needs.
A: It is widely used in semiconductor manufacturing, electronics, vacuum technology, and precision instrumentation.
