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FeNiCo Controlled Expansion Alloys 4J29 For Vacuum Electronic Devices Glass Sealing

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FeNiCo Controlled Expansion Alloys 4J29 For Vacuum Electronic Devices Glass Sealing

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Brand Name : XUNSHI

Model Number : 4J29

Certification : ISO9001

Place of Origin : China

MOQ : 50 kg

Price : Negotiable

Payment Terms : T/T

Supply Ability : 5000kg per week

Delivery Time : 30-35 days

Packaging Details : Plywood case

Equal grades : 4J29, Kovar, Nilo K

Forms of supply : WIre, strip, bar, forging, plate

Density : 8.36g/cm3

Model : 4J29

Product Name : Controlled Expansion Alloys

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FeNiCo Controlled Expansion Alloys 4J29 For Vacuum Electronic Devices Glass Sealing

 

 

4J29 is an equal grade of Kovar controlled expansion alloy in China. It has a high Curie point and good low temperature tissue stability

 

Chemical compistion of 4J29

Element C Mn Si P S Cu Cr Mo Ni Co Fe
Weight(%) 0.03 max 0.5 max 0.30 max 0.020 max 0.020 max 0.20 max 0.20 max 0.20 max 28.5~29.5 16.8~17.8 Bal

 

Features

  •  High Curie point
  •  Good low-temperature stability
  •  Tense oxide film, and can be well wetted by the glass
  •  No reaction with mercury
  •  Good corrosion resistance in air, fresh water and sea water

 

 

Applications
Kovar is widely used in applications such as power tubes, microwave tubes, transistors, diodes, hybrid packages, and other kinds of scientific instruments.

  •  Sealing alloys for hard glasses
  •  Transmitting tube
  •  Oscillation tube
  •  Ignitron
  •  Transistor
  •  Relay shell

FeNiCo Controlled Expansion Alloys 4J29 For Vacuum Electronic Devices Glass Sealing

 


Product Tags:

thermal expansion nickel

      

corrosion resistant alloys

      
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