Grades: 4J42, 4J50, 4J52
Standard: YB/T 5235-2005
Fe-Ni series expandable alloys are critical materials used for sealing applications in conjunction with soft glass and ceramics. These alloys provide excellent thermal expansion properties, ensuring compatibility and durability in a wide range of industrial applications.
Grade and Main Chemical Composition (%)
The table below outlines the chemical composition of Fe-Ni series expandable alloys:
Grade | C | P | S | Mn | Si | Al | Co | Ni | Fe (Bal) |
4J42 | ≤0.05 | ≤0.02 | ≤0.02 | ≤0.80 | ≤0.30 | ≤0.10 | ≤1.0 | 41.0–42.5 | Balance |
4J50 | ≤0.05 | ≤0.02 | ≤0.02 | ≤0.80 | ≤0.30 | --- | --- | 49.5–50.5 | Balance |
4J52 | ≤0.05 | ≤0.02 | ≤0.02 | ≤0.80 | ≤0.30 | --- | --- | 51.5–52.5 | Balance |
Applications
Fe-Ni expandable alloys are primarily used in:
Sealing Applications: Providing a reliable match with soft glass and ceramics for airtight seals.
Thermal Management: Ideal for components requiring controlled expansion to prevent cracking or stress failure.
Key Features
Precision in Thermal Expansion: Engineered to ensure seamless compatibility with glass and ceramics under thermal stress.
High Purity Standards: Adherence to YB/T 5235-2005 ensures consistent quality for demanding industrial applications.
Versatility: Suitable for electronics, aerospace, and advanced manufacturing requiring precise thermal behavior.
Conclusion
Fe-Ni series expandable alloys play a vital role in high-precision industries, offering unmatched compatibility with glass and ceramic components. Their controlled thermal expansion, combined with superior quality, makes them indispensable for critical sealing applications.
For more information or specific inquiries about these alloys, feel free to contact us.