Bright Kovar 4j29 Strip for Stamping IC Framework

Product Details
Customization: Available
Product Type: Strip
Material: Feni
Diamond Member Since 2008

Suppliers with verified business licenses

Audited Supplier

Audited by an independent third-party inspection agency

Management System Certification
ISO 9001, ISO 14001
  • Bright Kovar 4j29 Strip for Stamping IC Framework
  • Bright Kovar 4j29 Strip for Stamping IC Framework
  • Bright Kovar 4j29 Strip for Stamping IC Framework
  • Bright Kovar 4j29 Strip for Stamping IC Framework
  • Bright Kovar 4j29 Strip for Stamping IC Framework
  • Bright Kovar 4j29 Strip for Stamping IC Framework
Find Similar Products

Basic Info.

Model NO.
4j29 Strip
Carbon Content
Low Carbon
Shape
Strip
Condition
Soft
Surface
Bright
Thickness
0.1-2mm
Width
5-280mm
MOQ
30 Kgs
Transport Package
Coil, Waterproof Paper, Wooden Case
Trademark
TANKII-429
Origin
China
HS Code
722699900
Production Capacity
300 Tons Per Month

Product Description

Bright Kovar 4j29 Strip for Stamping IC Framework
 
Classification : the alloy of expansion characteristics

Application: Kovar (trademark of CRS Holdings, inc., Delaware[1]) is a nickel-cobalt ferrous alloy compositionally identical to Fernico 1, designed to be compatible with the thermal expansion characteristics of borosilicate glass (~5 × 10?6 /K between 30 and 200 °C, to ~10 × 10?6 /K at 800 °C) in order to allow direct mechanical connections over a range of temperatures. It finds application in electroplated conductors entering glass envelopes of electronic parts such as vacuum tubes (valves), X-ray and microwave tubes and some lightbulbs.
  
Chemical Composition in %  Kovar

 

 Ni
28,5-29,5%

Fe
51,14-54,5%

C
0.03%

Si
0.3%

Mn
0,4 %

S
o 0.015%

P
0.015%

o
17-18%

Ti
0.1%

Al
0.2%

Cu
0.2%

Cr
0,1 %
 
 The thermal properties of alloy

 
Temperature coefficient of linear expansion αsr ? 10-6 K-1 in the temperature range, ° C inflection point temperature, ° C
No less
Heat treatment regime blanks and samples
20-80 20-100 20-300 20-400 20-450 20-500 20-800
- - 4,6-5,6 4,6-5,2 - 5,9-6,4 - 420 samples and blanks annealing in hydrogen, a vacuum or protective atmosphere at a temperature (960 ± 20) ° C, holding 1 hr., cooling with the furnace or container to 200 ° C at a rate not exceeding 10 ° C / min
Property sintered HIPed
Density / g cm3 8.0 8.35
Hardness / HV1 160 150
Youngs Modulus / GPa 138 138
reduction of area at fracture / % 30 30
yield strength / MPa 270 270
thermal conductivity / W/Km 17
Curie Temperature / °C 435
electrical resistivity Ω mm2 / m 0.49
specific heat J/gK 0.46
thermal expansion coefficient/10?6 K?1 (25 - 200 °C) 5.5
(25-300 °C) 5.1
(25-400 °C) 4.9
(25-450 °C) 5.3
(25-500 °C) 6.2

 
The name Kovar is often used as a general term for Fe-Ni alloys with these particular thermal expansion properties. Note the related particular Fe-Ni alloy Invar which exhibits minimum thermal expansion.
 
TANKII, referring to the presence of high-power production, offers customers buy alloy Kovar in the required quantities and ensures minimum time shipments of rolled metal products, made on the basis of Kovar.

Bright Kovar 4j29 Strip for Stamping IC Framework

 

Send your message to this supplier

*From:
*To:
*Message:

Enter between 20 to 4,000 characters.

This is not what you are looking for? Post a Sourcing Request Now
Contact Supplier