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Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube
Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube
Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube
Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube
Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube
Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube
Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube
Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube
Specifications
Brand Name :
TANKII
Model Number :
Kovar Alloys
Certification :
ISO SGS
Place of Origin :
Shanghai, China,
MOQ :
Negotiable
Price :
negotiable
Payment Terms :
L/C, T/T, Western Union
Supply Ability :
1000000 Pcs per Month
Delivery Time :
7-15 work days
Packaging Details :
wooden case / Carton
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

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

Product tags

alloy 625 pipe

,

a335 p91 alloy pipe

,

astm a335 p22 alloy pipe
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Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube

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Product Detail
Brand Name :
TANKII
Model Number :
Kovar Alloys
Certification :
ISO SGS
Place of Origin :
Shanghai, China,
MOQ :
Negotiable
Price :
negotiable
Contact Supplier
Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube
Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube
Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube
Ni29co18/ Uns K94610 (4J29) Kovar Expansion Precision Alloy Pipe / Tube

Shanghai Tankii Alloy Material Co.,Ltd

Verified Supplier
11 Years
shanghai, shanghai
Since 1981
Business Type :
Manufacturer, Exporter
Main Products :
Copper Nickel Alloy Wire, Electric Resistance Wire, Thermocouple Bare Wire
Total Annual :
8000000-100000000
Employee Number :
90~100
Certification Level :
Verified Supplier
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