4j36 Fe-Ni36 (W.Nr.1.3912) kovar sealing parts processing

Product Description:

Our 4J36 (W.Nr.1.3912) Kovar Sealing Parts are meticulously crafted for demanding applications requiring ultra-low thermal expansion and hermetic sealing compatibility with glass, ceramics, or critical electronic enclosures. Fabricated from Kovar alloy 4J36 (equivalent to DIN W.Nr.1.3912), these components excel in environments where thermal stability, vacuum integrity, and corrosion resistance are paramount.

Key Specifications:

• Material: Kovar 4J36 / W.Nr.1.3912 alloy

• Thermal Performance: Matched coefficient of thermal expansion (CTE: ~5.3×10⁻⁶/°C, 20–400°C) for seamless bonding with borosilicate glass and alumina ceramics.

• Precision Machining: Advanced CNC milling, turning, and EDM processes achieve tight tolerances (±0.005mm) for complex geometries, thin walls, and critical sealing interfaces.

• Surface Finish: Electropolishing, passivation, or custom metallization (e.g., nickel/gold plating) to minimize outgassing in vacuum systems (<10⁻¹¹ mbar·L/s).

• Temperature Range: Stable performance from cryogenic (-269°C) to high-temperature (+550°C) environments.

Applications:

4J36 is applied in environments that require an extremely low coefficient of expansion. It is mainly used as a glass sealing alloy for matching and sealing electrical components with hard glass, soft glass and ceramics, and belongs to a low-expansion alloy. There are two states: hard state and soft state. 4J36(Invar 36/K93600/1.3912) Invar alloy/glass seal alloy has a low coefficient of expansion and good plasticity within the atmospheric temperature range of -60 ° C to 80 ° C. It is used to make components with nearly constant dimensions within the temperature range and is widely used in radio, precision instruments, devices and other industries. 4J36(Invar 36/K93600/1.3912) Invar alloy/glass sealing alloy is used to make standard measuring tools, microwave resonators, passive layers of bimetallic strips, etc.

• High-vacuum feedthroughs for semiconductor/LED manufacturing equipment

• Hermetic packaging for aerospace sensors and satellite components

• Medical device encapsulation (e.g., implantable electronics, MRI systems)

• Laser diode housings and optoelectronic module sealing

• Power electronics and RF/microwave shielding in extreme conditions

Quality Assurance:

• Full traceability with material certification (MTC) and RoHS/REACH compliance.

• Dimensional inspection via CMM and 3D scanning per ISO 2768-f standards.

• X-ray porosity testing and thermal cycling validation.

Why Partner With Us?

• Technical Expertise: Decades of experience in Kovar alloy processing for mission-critical industries.

• End-to-End Solutions: Prototyping, small-batch customization, and high-volume production with fast turnaround.

• Certified Excellence: ISO 9001:2015 and IATF 16949 certified facilities.