Precision 4J36 Kovar Alloy Coil, please note that the above table provides a range of standard thicknesses, widths, and lengths for Precision Alloy.
- Dimensions:
- Thickness: 0.5mm – 50mm
- Width: >600mm
- Certification: ISO, SGS, BV and so on.
- *Customized size needs to be confirmed with us
- Grades: 1J22 soft magnetic alloy, 1J50 soft magnetic alloy, 1J79 Permalloy, 1J85 Permalloy, 4J32(Super-Invar), 4J36, 4J29 Kovar alloy, 4J42Kovar alloy, Cobalt-based elastic alloy 3J21.
Precision 4J36 Kovar Alloy Size And Specifications
The Precision 4J36 Kovar Alloy Coil is a nickel-iron-cobalt alloy specifically engineered for low thermal expansion and excellent glass-to-metal sealing properties. Known for its matched thermal expansion with borosilicate glass, Kovar (4J36) is widely used in electronics, aerospace, and vacuum systems where hermetic sealing is critical. Huaxiao Metal Manufacturer is the professional and experienced in processing alloy in China.
Controlled CTE (4.5–5.2 × 10⁻⁶/°C from 20–400°C) – Ensures compatibility with glass and ceramics.
Excellent hermetic sealing – Prevents gas leakage in electronic enclosures.
Good machinability & weldability – Suitable for precision components.
High corrosion resistance – Performs well in harsh environments.
Huaxiao Metal Supplier provides all sizes of Precision alloy coil for sale. Customized specifications are available upon request. Additionally, the exact chemical composition and mechanical properties may vary slightly within the ranges listed, depending on the specific alloy formulation and production process. Custom sizes are also available upon request. Welcome to inquire, and learn about more details about the alloy coil.
| Property | 4J36 Kovar | Standard Invar (4J32) | Stainless Steel (304) |
|---|---|---|---|
| CTE (×10⁻⁶/°C, 20–400°C) | 4.5–5.2 | 0.6–1.0 | 17.2 |
| Density (g/cm³) | 8.3 | 8.1 | 8.0 |
| Melting Point (°C) | 1450 | 1430 | 1400–1450 |
| Curie Temperature (°C) | 430 | 230 | Non-magnetic |
Chemical Composition of Precision 4J36 Kovar Alloy Coil
The chemical composition of Precision 4J36 Kovar Alloy is carefully controlled to ensure its exceptional properties. The typical composition includes:
| Element | Weight % | Role in Alloy Performance |
|---|---|---|
| Nickel (Ni) | 28.5–29.5 | Stabilizes thermal expansion |
| Cobalt (Co) | 17–18 | Enhances glass-matching CTE |
| Iron (Fe) | Balance | Structural base |
| Manganese (Mn) | ≤0.50 | Improves workability |
| Silicon (Si) | ≤0.30 | Deoxidizer |
| Carbon (C) | ≤0.05 | Reduces brittleness |
Key Insight:
High cobalt content (~17–18%) ensures CTE compatibility with glass.
Lower nickel than Invar (4J32), but optimized for sealing rather than ultra-low expansion.
Physical Properties of Precision 4J36 Kovar Alloy Coil
| Property | Value |
|---|---|
| Density (g/cm³) | 8.3 |
| Thermal Conductivity (W/m·K) | 17.3 |
| Electrical Resistivity (μΩ·m) | 0.49 |
| Magnetic Properties | Ferromagnetic below Curie temp (430°C) |
- Thermal Expansion Coefficient: Approximately 7.5×10^-6/°C, making it well-matched with materials like glass and ceramics.
- Density: Around 8.1 g/cm³, indicating a dense and strong material.
- Curie Temperature: 230°C, below which the alloy is ferromagnetic and exhibits extremely low thermal expansion.
Mechanical Properties of Precision 4J36 Kovar Alloy Coil
| Property | 4J36 (Annealed) | 4J36 (Cold Worked) |
|---|---|---|
| Tensile Strength (MPa) | 520–620 | 700–850 |
| Yield Strength (MPa) | 300–400 | 550–700 |
| Elongation (%) | 30–40 | 5–15 |
| Hardness (HV) | 140–180 | 200–250 |
Analysis:
Cold working increases strength but reduces ductility—important for forming processes.
Comparable to stainless steel in strength, but with superior thermal expansion control.
- Yield Strength: 240 MPa
- Tensile Strength: 490 MPa
- Hardness: HV 180 – 220
- Elastic Modulus: Typically around 200 – 210 GPa, providing high resistance to deformation.
Please note that the above specifications are typical and may vary slightly based on the manufacturer, production batch, and specific application requirements. For precise specifications and availability, it is recommended to consult with a supplier or manufacturer of Precision alloy coils. Huaxiao Metal Manufacturer also provides other shapes of Precision products, such as bar, sheet&plate, strip, tube&pipe, wire&mesh. The price is affordable and suitable.
What are the 4J36 Kovar Alloy Coil Benefits?
Precision 4J36 Kovar Alloy Coil, also known as Kovar alloy, is a specialized low-expansion iron-nickel-cobalt alloy designed for applications requiring extreme dimensional stability across a wide temperature range. Its unique combination of low thermal expansion, corrosion resistance, and good machinability makes it an ideal choice for various high-precision industries. These benefits make them a suitable choice for a wide range of demanding applications across different industries. Welcome to Huaxiao Metal Manufacturer to request the price, trust you can be satisfied in the alloy products and buy our products quickly, cooperate with us in trading Kovar Alloy coil 4J36 or other products.
Precision 4J36 Kovar Alloy Coil Applications and Uses
Huaxiao Metal Supplier provides all kinds of precision alloy coil in the world. Welcome to inquiry and ask for the price.
| Industry | Use Case | Why 4J36 Kovar? |
|---|---|---|
| Electronics | IC packages, transistor housings | Hermetic sealing prevents moisture ingress |
| Aerospace | Sensor enclosures, satellite components | Stable CTE in thermal cycles |
| Optics | Laser diodes, fiber-optic feedthroughs | Glass compatibility |
| Energy | Battery seals, fuel cell components | Long-term reliability |
- Electronics: Used in electronic packaging, vacuum tube shells, and optoelectronic device encapsulations due to its compatibility with glass and ceramics.
- Precision Instruments: Ideal for structural and connecting components in precision measurement and optical instruments.
- Aerospace: Utilized in thermal control systems and sensor encapsulations in spacecraft and satellites.
- Other Applications: Includes vacuum electronic devices, nuclear reactor components, and specific medical electronic equipment.
Tips for Procurement and Cost-Effectiveness
When procuring Precision 4J36 Kovar Alloy Coil, consider the following tips for cost-effectiveness:
- Supplier Selection: Choose reputable suppliers with a history of providing high-quality alloys.
- Quantity Orders: Larger quantity orders may offer cost savings due to bulk discounts.
- Material Certification: Ensure that the alloy meets required specifications and certifications for your application.
Alloy Procurement and Cost-Effectiveness
Procuring Precision 4J36 Kovar Alloy Coil involves balancing quality, quantity, and cost. High-quality alloys from reputable suppliers may have a higher initial cost but offer long-term reliability and performance benefits.
Precision 4J36 Kovar Alloy Coil Advantages
- Dimensional Stability: The alloy’s low thermal expansion coefficient ensures minimal size changes with temperature variations, critical for precision applications.
- Corrosion Resistance: Good corrosion resistance in atmospheric, freshwater, and various organic solvents, enhancing long-term reliability.
- Good Machinability: Easily processed into various shapes and sizes, suitable for complex designs.
- Electrical Conductivity: Good electrical and thermal conductivity, making it suitable for electrical connections and high-heat dissipation applications.
Precision 4J36 Kovar alloy (also known as Invar alloy) is a specialized low-expansion iron-nickel alloy renowned for its ultra-low coefficient of thermal expansion. This alloy boasts a unique crystal structure that significantly resists dimensional changes due to temperature fluctuations, maintaining remarkable stability.
One of its primary advantages lies in its extremely low thermal expansion coefficient, approaching zero within a normal temperature range. This characteristic ensures precision and stability in applications where thermal stability is crucial. Additionally, 4J36 exhibits good corrosion resistance in dry air at room temperature and possesses excellent machinability and welding properties.
In terms of applications, Precision 4J36 Kovar alloy is widely used in high-precision instruments, such as laser interferometers and precision theodolites, as well as in aerospace technology, optical instruments, and electronic packaging. Its ability to maintain dimensional stability across a wide temperature range makes it indispensable in these fields, ensuring the reliability and accuracy of systems and devices.
4J36 Kovar Alloy Coil Factory
Huaxiao Metal Supplier provides professional services and reasonable prices, offering customers the best quality products. The Precision Alloy Coil Alloy Factory is a specialized manufacturing facility dedicated to the production of high-quality precision alloy coils. This factory combines advanced technology, rigorous quality control, and experienced personnel to ensure the production of precision alloy coils that meet the highest standards.The factory is equipped with state-of-the-art production equipment and machinery, capable of producing precision alloy coils with precise dimensions and consistent quality. Welcome to require, and ask to the price.
Manufacturing and Cost
The manufacturing process of Precision 4J36 Kovar Alloy Coil includes smelting, casting, rolling, and possible additional processing steps such as cold drawing or annealing. Costs are influenced by raw material prices, processing complexity, and demand.
Pricing Insights
Pricing for Precision 4J36 Kovar Alloy Coil can vary based on market conditions, alloy specifications, and quantity ordered. Regular market monitoring and strategic purchasing can help manage costs effectively.
| Alloy | Approx. Price ($/kg) | Best Use Case |
|---|---|---|
| 4J36 Kovar | $50–80 | Electronics, glass sealing |
| 4J32 Super Invar | $80–120 | Ultra-low CTE applications |
| Stainless Steel 304 | $5–10 | General-purpose (non-sealing) |
In Conclusion
The Precision 4J36 Kovar Alloy Coil is the optimal choice for glass-to-metal sealing and electronic packaging due to its matched CTE, weldability, and corrosion resistance. While more expensive than stainless steel, its unique properties justify the cost in critical sealing applications.
For ultra-low expansion needs, 4J32 Invar is superior, but 4J36 remains the best for glass-matched sealing. Strategic procurement (bulk orders, certified suppliers) ensures cost efficiency without compromising quality.
Final Recommendation:
✔ Best for: Electronics, aerospace, and optics where glass sealing is required.
✔ Alternative: 4J32 for ultra-low CTE (non-sealing) applications.
✔ Procurement Tip: Monitor Ni/Co prices and secure long-term contracts for stability.
This data-driven analysis provides engineers and buyers with key insights for selecting 4J36 Kovar over competing alloys.
Precision 4J36 Kovar Alloy Coil offers a unique combination of properties that make it indispensable in various high-precision industries. Its low thermal expansion coefficient, corrosion resistance, and good machinability ensure long-term reliability and performance in demanding applications. By carefully considering procurement strategies and cost-effectiveness, businesses can leverage the benefits of this high-performance alloy to meet their specific needs.