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Expansion Alloy Kovar Annealed Drawing Soft Wires

Expansion Alloy Kovar Annealed Drawing Soft Wires

General description: 4J29 expansion alloy, also known as Kovar alloy, is a Nickel Iron alloy with 29% Nickel, 17% Cobalt and the remaining balance is Iron. The expansion characteristics of Kovar match both borosilicate (or Pyrex) glasses and alumina ceramics, making it one of the most popular...

Product Details

General description:

4J29 expansion alloy, also known as Kovar alloy, is a Nickel Iron alloy with 29% Nickel, 17% Cobalt and the remaining balance is Iron. The expansion characteristics of Kovar match both borosilicate (or Pyrex) glasses and alumina ceramics, making it one of the most popular controlled expansion alloys for hermetic sealing applications. Kovar is produced to ensure good properties for machining and deep drawing, and is a porosity free product. You’ll find Kovar in applications such as power tubes, microwave tubes, transistors, diodes, hybrid packages, and other kinds of scientific instruments.


Basic parameter: 

Melting point: 1450℃

Density: 8.36g/cm³


Chemical composition:

Ni

C

S

P

Mn

Si

28.5-29.5

0.03 max

0.02 max

0.02 max

0.5 max

0.3 max

Cr

Co

Cu

Mo

Fe

 

0.2 max

16.8-17.8

0.2 max

0.2 max

Basic



Production process of alloy Kovar wires:

1.jpg

Application of alloy Kovar wires:

· Aerospace;

· Glass sealing;

· Electron components etc.


We can provide more:

With advanced equipment and technology, we can serve you other products as follows:

1.High temperature alloys (Casting master alloy, deformation super alloy and so on).

2.Corrosion resistant alloy.

3.Welding wire.

4.Precision alloys (soft magnetic alloy, expansion alloy and so on).

5.High resistance alloys for electrical heating.

6.Valve steel,

7.Forged parts and so on.


If you're interested in our expansion alloy kovar annealed drawing soft wires made in China, welcome to buy the quality and durable product from our factory. We're one of the leading Expansion Alloy Kovar manufacturers and suppliers in China, also supporting customized production. Check the price list and quotation with us now.

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