Product Description
4J36 and 4J38 are precision nickel-iron alloys known for their exceptionally low thermal expansion rates. These alloys are commonly referred to as Invar or Invar-type alloys and are widely used in applications requiring dimensional stability across a broad range of temperatures. Their excellent strength, corrosion resistance, and unique thermal properties make them highly suitable for precision engineering, scientific instruments, and industrial components.
Comparison Table: 4J36 & 4J38 (KM-FN36, Invar 2)
| Property |
4J36 (Invar 36) |
4J38 (KM-FN36, Invar 2) |
| Chemical Composition |
Ni: 36%, Fe: Balance |
Ni: 38%, Fe: Balance |
| Thermal Expansion Coefficient |
~1.2 × 10 /°C (near room temperature) |
~1.0 × 10/°C (enhanced stability) |
| Density |
~8.1 g/cm³ |
~8.15 g/cm³ |
| Tensile Strength |
High |
High |
| Corrosion Resistance |
Excellent |
Excellent |
| Magnetic Properties |
Low magnetic permeability |
Low magnetic permeability |
| Heat Resistance |
High thermal stability |
Improved thermal stability |
| Common Forms Available |
Wire, strip, rod, sheet |
Wire, strip, rod, sheet |
| Applications |
Aerospace, electronics, optics |
High-precision instruments, tooling |
| Operating Temperature |
-200°C to +250°C |
-200°C to +250°C |
Key Properties of 4J36 & 4J38:
-
Chemical Composition:
- 4J36: Contains 36% nickel and the remainder is iron. This composition gives it the signature low coefficient of thermal expansion.
- 4J38: Slightly higher nickel content (38%) enhances thermal stability and further reduces the coefficient of thermal expansion.
-
Thermal Expansion:
- Both alloys exhibit near-zero thermal expansion near room temperature. 4J38 provides even better performance, making it ideal for extreme precision requirements.
-
Corrosion Resistance:
- Both alloys have excellent resistance to corrosion, particularly in atmospheric and mild industrial environments.
-
Magnetic Properties:
- These alloys are designed to have low magnetic permeability, making them suitable for precision instruments and applications sensitive to magnetic interference.
-
Dimensional Stability:
- With minimal thermal expansion, these alloys maintain their dimensions even under temperature fluctuations, ensuring exceptional stability for precision applications.
-
Mechanical Strength:
- Both alloys exhibit high tensile strength, making them suitable for demanding mechanical applications.
Applications of 4J36 & 4J38 Precision Nickel Alloy Wire:
-
Aerospace Industry:
- Used in aerospace components, including cryogenic systems, satellite instruments, and parts requiring minimal expansion under temperature changes.
-
Electronics Industry:
- Ideal for components in electronic devices where stability under varying thermal conditions is crucial.
-
Scientific Instruments:
- Extensively used in high-precision instruments such as interferometers, optical devices, and measurement tools.
-
Industrial Applications:
- Used in molds, tooling, and fixtures for materials that are processed at varying temperatures.
-
Glass-to-Metal Sealing:
- Its thermal expansion properties make it ideal for glass-to-metal sealing in vacuum tubes, light bulbs, and electronic components.
-
Cryogenic Applications:
- Maintains structural stability and strength at extremely low temperatures, making it perfect for liquefied gas storage and transfer systems.
Advantages of 4J36 & 4J38:
-
Exceptional Thermal Stability:
- These alloys are renowned for their near-zero thermal expansion, making them indispensable in precision applications.
-
Corrosion and Oxidation Resistance:
- Both alloys perform well in atmospheric and mildly corrosive environments, ensuring durability.
-
Dimensional Accuracy:
- Their stability over a wide temperature range ensures accurate performance in high-precision devices.
-
Versatility:
- Available in various forms such as wire, strip, rods, and sheets, these alloys are adaptable to diverse industrial needs.
-
Cryogenic Performance:
- Retains strength and stability even at extremely low temperatures, providing reliability for specialized applications.
Conclusion:
4J36 (Invar 36) and 4J38 (KM-FN36, Invar 2) are precision nickel alloys designed for high-performance applications requiring exceptional dimensional stability and low thermal expansion. With their excellent corrosion resistance, mechanical strength, and low magnetic permeability, these alloys are ideal for aerospace, electronics, and scientific instruments. Their versatility and reliability make them invaluable in industries demanding extreme precision and stability under varying thermal conditions.
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Company Profile
Shandong Titanium Nickel Special Steel Co., Ltd., registered funds (one thousand yuan for 10,000 yuan), the company is mainly committed to high -tech enterprises that are integrated with special alloy materials, specializing in the research and sales of special alloys such as nickel -based and iron -based. Products include corrosion-resistant alloys, superalloys, precision alloys, Hastelloy, Monel, INCONEL, INCOLOY, copper-nickel alloys, titanium and titanium alloys, zirconium and zirconium alloys, nickel and nickel-based alloys, nickel-cobalt-based heat-resistant alloys , Hafnium alloy, etc., more than 60 kinds of alloy materials such as special stainless steel. On the basis of stabilizing the quality of the original products, according to the market demand, it solves the quality problems existing in the traditional metallurgical process, and ensures the low miscellaneous and low deflection of the alloy material products, which has won an excellent reputation in the industry.
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FAQ
What is a Precision Alloy Nickel Alloy?
A Precision Alloy Nickel Alloy is a specialized group of nickel-based alloys designed to perform exceptionally well in applications that require high precision and dimensional stability. These alloys are often used in electronics, aerospace, and instrumentation where accuracy, resistance to temperature changes, and mechanical strength are critical.
2. What are the primary features of Precision Alloy Nickel Alloys?
Precision Alloy Nickel Alloys are known for the following key features:
- Low and Stable Thermal Expansion: They have controlled and predictable thermal expansion, making them ideal for use in environments where dimensional stability is essential.
- High Strength: These alloys possess high tensile and yield strength, offering resistance to deformation and failure under stress.
- Magnetic Properties: Many precision nickel alloys offer excellent magnetic permeability, which is crucial in the manufacture of magnetic devices and components.
- Corrosion Resistance: They are resistant to corrosion, oxidation, and wear, ensuring longevity in harsh conditions.
- Weldability: These alloys are typically easy to weld and form into complex shapes without losing their properties.
3. What are common applications of Precision Alloy Nickel Alloys?
Precision Alloy Nickel Alloys are used in:
- Electronics: Connectors, switches, relays, and sensors.
- Aerospace: Components in turbines, engines, and high-precision mechanical parts.
- Automotive: Parts that require resistance to extreme temperatures and mechanical stress.
- Instrumentation: Thermocouples, strain gauges, and precision measuring instruments.
- Magnetic Devices: Transformers, magnetic sensors, and inductors.
4. What are the differences between Precision Alloy Nickel Alloys and other Nickel Alloys?
The main difference lies in the specific application and performance:
- Precision Alloys: Designed specifically for applications requiring high precision, stability, and uniformity in temperature and mechanical stress conditions.
- Standard Nickel Alloys: While nickel alloys generally offer good strength and corrosion resistance, precision alloys are tailored for applications where dimensional accuracy and material properties must remain consistent under extreme conditions.
5. What are some examples of Precision Alloy Nickel Alloys?
Some of the well-known precision alloy nickel alloys include:
- Invar (36% Nickel): Known for its low thermal expansion, used in precision instruments.
- Kovar (29% Nickel): A nickel-iron alloy used in electronic and sealing applications.
- 1J06 (1J6): A precision alloy with excellent thermal stability and low thermal expansion used in electronics and precision instruments.
6. What industries use Precision Alloy Nickel Alloys?
Industries that commonly use precision alloy nickel alloys include:
- Electronics and Telecommunications: For components that need stability and durability under varying temperatures and electrical loads.
- Aerospace and Defense: For parts exposed to extreme temperature changes, mechanical stress, and corrosion.
- Automotive: Especially in high-performance vehicles and systems like sensors and exhaust components.
- Medical Equipment: In instruments and devices that require high precision and long-term reliability.
7. What is the significance of low thermal expansion in Precision Alloy Nickel Alloys?
Low thermal expansion means that the material's dimensions remain stable even when exposed to temperature changes. This is crucial in high-precision applications such as measuring instruments, optical devices, and aerospace components, where even minute dimensional changes can lead to performance degradation.
8. How is Precision Alloy Nickel Alloy different from other types of alloys in terms of strength and durability?
Precision alloys, particularly those made from nickel, tend to have high tensile strength and excellent resistance to deformation under mechanical stress. These alloys are engineered to maintain their shape and structural integrity over a wider range of temperatures and environmental conditions, compared to other materials like carbon steel or standard stainless steel.
9. Are Precision Alloy Nickel Alloys magnetic?
Yes, many precision alloy nickel alloys, such as Kovar (29% Nickel), are designed to maintain stable magnetic properties. This makes them ideal for applications in transformers, magnetic sensors, and electronic devices that require controlled magnetic permeability.
10. How are Precision Alloy Nickel Alloys manufactured?
These alloys are typically produced using advanced metallurgical processes such as:
- Vacuum Induction Melting (VIM) or Vacuum Arc Remelting (VAR) for refining material purity.
- Casting and Hot or Cold Rolling to form sheets, strips, or wires.
- Precision machining techniques to create intricate components with tight tolerances.
- Heat Treatment to enhance mechanical properties such as strength, toughness, and dimensional stability.
11. Can Precision Alloy Nickel Alloys be welded and processed easily?
Yes, most precision alloy nickel alloys have good weldability and can be processed into complex shapes, making them suitable for high-precision manufacturing. However, the exact processing techniques may vary depending on the alloy composition and specific application requirements.
12. What is the price range for Precision Alloy Nickel Alloys?
The price of precision alloy nickel alloys can vary depending on the alloy grade, size, and supplier. Generally, they are more expensive than standard nickel alloys due to their specific formulation and high-performance properties. Prices typically range from $20 to $100 per kilogram or more, depending on the material's purity and market conditions.
13. How do I choose the right Precision Alloy Nickel Alloy for my application?
When selecting a precision alloy, consider the following factors:
- Thermal expansion requirements (low expansion or stable behavior under temperature fluctuations).
- Mechanical strength needed for your application (tensile strength, hardness, elongation).
- Magnetic properties (whether your application involves magnetic fields).
- Corrosion resistance for exposure to harsh environments.
- Workability (whether the alloy needs to be welded, machined, or formed).
14. What are the typical sizes and forms available for Precision Alloy Nickel Alloys?
Precision alloy nickel alloys are available in various forms, including:
- Sheets and plates for use in manufacturing and construction.
- Wire and strips for electronics and fine machinery.
- Rods and bars for precision machining.
- Foils for use in thin applications such as sensors or coatings.
15. How can I contact you for more information?
You can contact us through the following methods:
Online support: Visit our website for live chat
Address:
300 Meters North of Liaoniu Road and Xindong Ring Road, Liaocheng High-Tech Zone, Liaocheng, Shandong, China
We look forward to providing you with high-quality products and services!
If you have any other questions, feel free to contact us, and we will do our best to assist you!
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