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

Place of Origin China
Brand Name AIWEN
Certification ISO9001
Model Number 4J29
Minimum Order Quantity 50 kg
Price Negotiable
Packaging Details Plywood case
Delivery Time 30-35 days
Payment Terms T/T
Supply Ability 5000kg per week
Product Details
Equal Grades 4J29, Kovar, Nilo K Forms Of Supply WIre, Strip, Bar, Forging, Plate
Density 8.36g/cm3 Certification ISO9001
Model 4J29 Product Name Controlled Expansion Alloys
High Light

thermal expansion nickel

,

corrosion resistant alloys

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Product Description

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 0