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Shanghai Tankii Alloy Material Co.,Ltd
Shanghai Tankii Alloy Material Co.,Ltd
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Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube

Product Details

Place of Origin: Shanghai, China,

Brand Name: TANKII

Certification: ISO SGS

Model Number: Kovar Alloys

Payment & Shipping Terms

Minimum Order Quantity: Negotiable

Price: negotiable

Packaging Details: wooden case / Carton

Delivery Time: 7-15 work days

Payment Terms: L/C, T/T, Western Union

Supply Ability: 1000000 Pcs per Month

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Specifications
Highlight:

high temperature metal alloys

,

high temperature wire

Material:
Fe-Ni-Co Alloys
Diameter:
1mm Min
Wall Thickness:
0.02mm Min
Length:
Customized
Sample:
Accepted
Surface:
Bright
Name:
Ni29co18/ Uns K94610 / 4J29
Material:
Fe-Ni-Co Alloys
Diameter:
1mm Min
Wall Thickness:
0.02mm Min
Length:
Customized
Sample:
Accepted
Surface:
Bright
Name:
Ni29co18/ Uns K94610 / 4J29
Description
Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube

Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube

1.Description:

4J29(China); 29H, 29H-B, Techallony(Russia); Kovar, Rodar, Glasseal 29-17(United States); Nilo K, Telcaseal(Great Britain); KV-1, KV-2, KV-3(Japan); Dilver P0, Dilver P1(France); Vacon 12, Silvar 48(Germany).

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.


2. Chemical composition(%):
 


Grade

C

Si

Mn

P

S

Ni

Co

Fe

4J29

0.015

0.12

0.25

0.006

0.005

29.10

17.3

Bal



3. Physical properties

 




Grade



Density(g/cm3)

Thermal expansion coefficient (10-6/°C)


Curie point(°C)


Volume resistivity(μΩ.cm)


Thermal conductivity(W/m. °C)

4J29

8.17

5.0(20~300°C)
5.2(20~450°C

430

46(20°C)

20.3



4. Mechnical properties:
 




Grade


Yield Strength(Mpa)



Tensile Strength



Elongation(%)



Hardness(HV)


4J29

Temper rolled

695

780

5

230

As annealed

315

520

24

148



5.Application:


The alloy is widely used as glass sealing for electronic vacuum devices, such as launching tube, oscillating tube, ignitron, magnetron, transistor, sealing plug, relay, leading wire of integrated circuit, chassis, shell, scaffold and so on.

6.size:


Kovar tubes / Pipes: Φ1.0~80×0.02~20mm


7.Advantages:


1.Pass: ISO9001 certification
2.fine after-sale services
3.small order accepted
4.samples available
5.short delivery time

 

Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube 0

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