FE8367 Invar 42 Foil Annealed

Invar 42 Foil Annealed Description

Invar 42 Foil Annealed is a specialised nickel-iron alloy containing approximately 42% nickel, renowned for its exceptionally low coefficient of thermal expansion. This unique property ensures superior dimensional stability across a broad range of temperatures, making it an ideal choice for sensitive applications in electronics, aerospace, and telecommunications. The annealing process further refines its microstructure, strengthening the material while maintaining its notable consistency and reliability.

Customised to match your precise dimensional requirements, our Invar 42 Foil meets stringent industry standards, guaranteeing outstanding performance and durability. Thoroughly tested and quality-assured, this alloy reduces thermal distortion, enhances operational efficiency, and extends component life. Whether used in glass-to-metal sealing, precision instruments, or advanced assemblies, Invar 42 Foil Annealed delivers precision and stability.

Invar 42 Foil Annealed Applications

With its tightly controlled coefficient of expansion, Invar 42 Foil Annealed is well-suited for a range of advanced applications. Commonly used in industries that demand precise dimensional stability over temperature variations, this metal alloy ensures reliable performance in extreme conditions. Its low thermal expansion makes it valuable in electronics, aerospace, and measurement devices, while its excellent machinability and workability further expand its range of potential uses.

1. Electronics and Precision Instruments

·         Connector Seals: Invar 42 Foil Annealed ensures tight dimensional control and reliable sealing capabilities in high-frequency environments.

·         Sensor Housing: Its stability over varying temperatures allows sensors to maintain accurate readings, even in fluctuating thermal conditions.

2. Aerospace 

·         Satellite Structural Frames: The alloy’s low thermal expansion minimises deformation in space-based applications subjected to extreme temperature cycles.

·         Avionics Components: Its dimensional consistency contributes to the precise alignment of on-board systems for enhanced safety and performance.

3. Research and Laboratory Equipment

·         Substrate Carriers: Invar 42 Foil Annealed provides a stable base for thin-film processes and experimental setups that require minimal expansion.

·         Metrology Tools: The alloy’s reliable thermal characteristics support accurate calibration and measurement in demanding laboratory environments.

Invar 42 Foil Annealed Packaging

Invar 42 Foil Annealed is carefully packaged with robust protective materials, such as plastic wrap or Mylar sheets, to safeguard it from potential damage. Each roll is vacuum-sealed to prevent exposure to moisture and contaminants, ensuring minimal risk of corrosion. Additional anti-corrosion agents can be applied upon request for enhanced protection. Customised solutions, including unique labelling, spool sizes, and packaging configurations, are available based on specific customer requirements.

Packaging: Vacuum sealed, Wooden Box, or Customised.

Invar 42 Foil Annealed FAQs

Q1: What are the key material properties of Invar 42 Foil Annealed?

A1: Key properties of Invar 42 Foil Annealed include an extremely low coefficient of thermal expansion, high dimensional stability, and good ductility. The nominal composition is approximately 42% nickel and 58% iron. This alloy exhibits consistent mechanical properties over a broad temperature range, making it ideal for electrical and electronic applications. Additionally, vacuum or hydrogen annealing typically refines its microstructure, enhancing dimensional precision and magnetic behaviour.

Q2: How can Invar 42 Foil Annealed be processed or fabricated?

A2: Invar 42 Foil Annealed can be precision cut using stamping, laser cutting, or photo-etching to achieve tight tolerances. For forming operations, controlled heating and uniform cooling are crucial to preserving its low expansion characteristics. Vacuum or protective atmospheres during annealing help maintain cleanliness and prevent oxidation. Additionally, Invar 42 can be joined through electron-beam or TIG welding, provided measures are taken to minimise distortion and preserve dimensional stability.

Q3: Which quality standards and certifications apply to Invar 42 Foil Annealed?

A3: Invar 42 Foil Annealed typically complies with industry specifications such as ASTM F1684 for Fe-Ni alloys, ensuring accurate chemical composition and mechanical properties. Manufacturers often maintain ISO 9001 or AS9100 certification to demonstrate rigorous quality management and traceability. Batch-to-batch testing may include tensile strength, dimensional tolerance, and cleanliness assessments, in line with customer or aerospace requirements. Specific certifications depend on end-use, emphasising consistency and reliability in high-precision applications.

Related Information

1. Applications in Advanced Industries

A wide range of high-tech sectors rely on the consistent performance of Invar 42 Foil Annealed to achieve precise dimensional stability. The low thermal expansion coefficient of this grade makes it ideal for sensitive components where minor fluctuations can disrupt complex systems, such as in aerospace instrumentation and satellite hardware. In particular, the foil's customised thickness offers unique advantages in miniaturised devices that demand exact tolerances and superior reliability under variable temperatures.

Beyond aerospace, manufacturers in photonics, telecommunications, and instrumentation also capitalise on the inherent stability of Invar 42 Foil Annealed. The foil’s ability to maintain its shape and dimensions, even after multiple heating and cooling cycles, ensures that sensitive processes remain finely tuned. By opting for customised dimensions, engineers can efficiently integrate this specialised alloy into cutting-edge circuits and precision panels, ultimately enhancing performance across a variety of advanced industrial applications.

2. Quality Control Measures

Consistency is paramount when producing annealed Invar 42 Foil, especially when dimensions are customised to meet specialised projects. Rigorous process monitoring at every stage helps maintain uniform structural properties throughout the foil. Techniques such as ultrasonic testing and non-destructive evaluation verify that internal integrity remains intact, preventing any microstructural flaws that could compromise accuracy in high-performance environments.

Data-driven inspections are integral to verifying that each customised Invar 42 Foil meets the exacting demands of industries relying on long-term dimensional stability. Professionals frequently conduct thermal shock tests to confirm the alloy’s ability to withstand rapid temperature transitions without distortion. By controlling key variables such as furnace temperature, annealing duration, and cool-down rates, manufacturers reinforce confidence in each batch’s reliability, ensuring that customers receive visually and structurally flawless material for paramount applications.