Customized Processing Precision Ceramic Sealing 4j33 Kovar Alloy Parts
Material:
4J33 / 33HK / NI33CO17 / KV-4 / NI33CO14 / CO257
Dimensions: 7-188mm
Material thickness: 0.8-4.0mm
Process: Stamping and machining
Product technical requirements:
Customized according to different customer requirements, the welding surface can be nickel-plated
Application: Kovar Alloys for ceramic sealing
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Product Description:
4J33 Precision Ceramic Sealing Kovar Alloy Components
Our 4J33 Precision Ceramic Sealing Kovar Alloy Parts are engineered for exceptional performance in demanding hermetic sealing applications. Combining the unique thermal expansion properties of Kovar alloy (Fe-Ni-Co) with advanced ceramic materials, these components deliver unmatched reliability in high-temperature and vacuum environments.
Key Features
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Material Excellence:
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Kovar Alloy 4J33 (GB/T 15018) with controlled CTE (4.5~5.5×10⁻⁶/℃)
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Compatible ceramic options: Al₂O₃, AlN, or customized dielectric materials
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Precision Engineering:
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Tolerance down to ±0.01mm
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Mirror surface finish (Ra ≤0.2μm)
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Seamless ceramic-to-metal bonding
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Superior Performance:
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Thermal stability: -70℃ to 450℃
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Vacuum tightness: ≤1×10⁻¹¹ Pa·m³/s
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Excellent corrosion resistance
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Certified Quality:
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ISO 9001:2015 certified manufacturing
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MIL-STD-883 compliant hermeticity testing
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RoHS & REACH compliant
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Applications
▸ Aerospace sensor packaging
▸ High-power LED/LD modules
▸ RF/Microwave component housings
▸ Medical implantable device encapsulation
▸ Ultra-high vacuum (UHV) systems
Technical Advantages
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Matched CTE eliminates thermal stress at ceramic interfaces
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Glass-free sealing technology for pure metal-ceramic bonds
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Custom geometries available (discs, rings, feedthroughs)
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Optional metallization layers (Ni/Au, Ti/Ni/Au)
Packaging & Compliance
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Class 100 cleanroom packaging
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Anti-static vacuum-sealed containers
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Custom labeling and documentation support
Related products
FAQ
You can tell us your needs (such as specifications, quantities, materials, drawings, etc.) by email(info@prekovar.com), phone or by submitting the form on our website.
With over 10 years of specialized focus on Kovar/alloy processing, we master the unique challenges of this low-expansion material. Our advanced stamping techniques ensure micron-level accuracy, ideal for critical applications in electronics, aerospace, and hermetic sealing components.
