Alle producten
-
Legering met lage uitbreiding
-
Zachte Magnetische Legering
-
Elastische Legering
-
Thermisch bimetaal
-
Lassendraad
-
Thermische Neveldraad
-
Nichromelegering
-
zuivere nikkel
-
Koperen nikkellegering
-
Thermokoppelkabel
-
Monellegering
-
Inconel legering
-
Hastelloylegering
-
Hoogtemperatuur legering
-
Nitinollegering
-
Naar kop
-
Anderen
-
Alfred...We hebben de goederen ontvangen, alles ging goed. Perfecte verpakking, goede kwaliteit van het product, goede prijs - we zijn tevreden. -
Mag***De kwaliteit van het product is zeer goed, boven mijn verwachtingen, het daadwerkelijke gebruik van volledig voldoen aan mijn behoeften, zullen we opnieuw kopen. -
Matthew...Ik heb een laagexpansielegering gekocht van Joy. Ze is een zeer verantwoordelijke dame. De kwaliteit van Huona's producten is behoorlijk goed.
4J29 Kovar Alloy Bar for Glass to Metal Sealing with Controlled Thermal Expansion in Precision Electronic Applications
| Plaats van herkomst | China |
|---|---|
| Merknaam | HUONA |
| Certificering | ISO9001 |
| Modelnummer | hengel |
| Min. bestelaantal | 1 |
| Prijs | NEGOTATION |
| Verpakking Details | Standaard exportverpakking in dozen of houten kisten; aangepaste verpakking beschikbaar op aanvraag |
| Levertijd | 10–25 dagen, afhankelijk van specificaties en hoeveelheid |
| Betalingscondities | T/T |
| Levering vermogen | 5.000 – 10.000 stuks per maand (aanpasbaar op basis van bestelling). |
Productdetails
| Product | 4J29 Kovar-legeringsstaaf | Legeringstype | Fe Ni Co glasafdichtingslegering |
|---|---|---|---|
| Vorm | ronde barstaaf | Diameter | 3 mm tot 100 mm Aanpasbaar |
| Lengte | 500 mm 1000 mm 2000 mm Aanpasbaar | Dikte | 8,2 gram per cm3 |
| Thermische expansiecoëfficiënt | 4,6 tot 5,2 x10 min6 per C | Smeltbereik | 1450 tot 1490 Chr |
| Verpakking | Houten kist kartonnen exportverpakking | ||
| Markeren | Glass to Metal Sealing Kovar Alloy Bar,Controlled Thermal Expansion Kovar Alloy Rod,Precision Electronic Applications Iron Nickel Cobalt Alloy Bar |
||
Productomschrijving
4J29 Kovar alloy bar is a precision iron nickel cobalt alloy containing controlled thermal expansion characteristics.
It is widely used for glass to metal sealing applications due to its thermal expansion coefficient closely matching borosilicate glass and ceramics.
The alloy provides stable dimensional performance under temperature changes and is commonly used in electronic vacuum devices and precision sealing structures.
Key Features
Controlled low thermal expansion alloy
Excellent glass to metal sealing performance
Stable mechanical properties under temperature variation
Good machinability and dimensional stability
Suitable for precision electronic and vacuum applications
Typical Chemical Composition
| Element | Content |
|---|---|
| Fe | Balance |
| Ni | 28 to 30 percent |
| Co | 16 to 17 percent |
| Mn | less than 0.5 percent |
| Si | less than 0.3 percent |
| C | less than 0.03 percent |
Technical Specifications
| Item | Specification |
|---|---|
| Product | 4J29 Kovar Alloy Bar |
| Alloy Type | Fe Ni Co Glass Sealing Alloy |
| Shape | Round Bar Rod |
| Diameter | 3 mm to 100 mm Customizable |
| Length | 500 mm 1000 mm 2000 mm Customizable |
| Density | 8.2 g per cm3 |
| Thermal Expansion Coefficient | 4.6 to 5.2 x10 minus6 per C |
| Melting Range | 1450 to 1490 C |
| Surface Finish | Bright Black or Polished |
| Packaging | Wooden case carton export packing |
| MOQ | Negotiable |
Applications
Glass to metal sealing components
Electronic vacuum devices
Transistor and semiconductor packaging
Aerospace precision components
Relay and sensor housings
Instrumentation and control systems
Advantages
Excellent thermal expansion matching with glass
High sealing reliability and stability
Good machinability and formability
Stable performance under thermal cycling
Suitable for precision electronic applications
Supply and Delivery
Supply Capacity
5000 to 8000 kg per month depending on specification
Lead Time
10 to 20 days depending on quantity
Packaging
Standard export wooden case or carton
Custom packaging available upon request
Inquiry Guidance
Please advise required diameter length surface condition and application environment. We will recommend the most suitable 4J29 Kovar alloy bar specification for your project.
Geadviseerde Producten
