MachineU > China Products > Minerals & Metallurgy > Non-ferrous Metal > Nickel
Reliable Quality Kovar Expansion Alloy Sheet Engrave Bright
Reliable Quality Kovar Expansion Alloy Sheet Engrave Bright
Reliable Quality Kovar Expansion Alloy Sheet Engrave Bright
Reliable Quality Kovar Expansion Alloy Sheet Engrave Bright
Reliable Quality Kovar Expansion Alloy Sheet Engrave Bright
Reliable Quality Kovar Expansion Alloy Sheet Engrave Bright
Reliable Quality Kovar Expansion Alloy Sheet Engrave Bright
Reliable Quality Kovar Expansion Alloy Sheet Engrave Bright
Specifications
Brand Name :
JX
Model Number :
Reliable Quality Kovar Expansion Alloy Sheet Engrave
Certification :
ISO
Place of Origin :
china
MOQ :
100kgs
Price :
Negotiable
Payment Terms :
L/C, T/T
Supply Ability :
3000T
Delivery Time :
35days
Packaging Details :
Standard wooden case
Product Type :
Reliable Quality Kovar Expansion Alloy Sheet Engrave
Material :
Feni Alloy
Carbon Content :
low
Transport Package :
wooden case
Shape :
round bar
Condition :
soft
Surface :
Bright
Origin :
China
Description

Reliable Quality Kovar Expansion Alloy Sheet Engrave

Iron nickel cobalt precision alloy kovar sheet price with ASTM F15

Kovar Sheet not only has thermal expansion similar to glass, but its nonlinear thermal expansion curve can often be made to match a glass, thus allowing the joint to tolerate a wide temperature range. Chemically, it bonds to glass via the intermediate oxide layer of nickel oxide and cobalt oxide; the proportion of iron oxide is low due to its reduction with cobalt. The bond strength is highly dependent on the oxide layer thickness and character. The presence of cobalt makes the oxide layer easier to melt and dissolve in the molten glass. A grey, grey-blue or grey-brown color indicates a good seal. A metallic color indicates lack of oxide, while black color indicates overly oxidized metal, in both cases leading to a weak joint.

Mainly used in electric vacuum components and emission control, shock tube, igniting tube, glass magnetron, transistors, seal plug, relay, integrated circuits lead, chassis, brackets and other housing sealing.

Kovar Sheet Normal composition%

Ni 28.5~29.5 Fe Bal. Co 16.8~17.8 Si ≤0.3
Mo ≤0.2 Cu ≤0.2 Cr ≤0.2 Mn ≤0.5
C ≤0.03 P ≤0.02 S ≤0.02

Tensile Strength, MPa
Code of condition Condition Wire Strip
R Soft ≤585 ≤570
1/4I 1/4 Hard 585~725 520~630
1/2I 1/2 Hard 655~795 590~700
3/4I 3/4 Hard 725~860 600~770
I Hard ≥850 ≥700

Typical Physical properties
Density (g/cm3) 8.2
Electrical resistivity at 20ºC(Om*mm2/m) 0.48
Temperature factor of resistivity(20ºC~100ºC)X10-5/ºC 3.7~3.9
Curie point Tc/ ºC 430
Elastic Modulus, E/ Gpa 138

Kovar Expansion Alloy Sheet Picture:
Reliable Quality Kovar Expansion Alloy Sheet Engrave BrightReliable Quality Kovar Expansion Alloy Sheet Engrave BrightReliable Quality Kovar Expansion Alloy Sheet Engrave Bright

Coefficient of expansion

θ/ºC α1/10-6ºC-1 θ/ºC α1/10-6ºC-1
20~60 7.8 20~500 6.2
20~100 6.4 20~550 7.1
20~200 5.9 20~600 7.8
20~300 5.3 20~700 9.2
20~400 5.1 20~800 10.2
20~450 5.3 20~900 11.4



Thermal conductivity
θ/ºC 100 200 300 400 500
λ/ W/(m*ºC) 20.6 21.5 22.7 23.7 25.4

Product tags

aluminium extrusion profile catalog

,

aluminum extrusion profiles catalog

,

aluminium extrusion profiles catalogue
Send your message to this supplier
Send Now

Reliable Quality Kovar Expansion Alloy Sheet Engrave Bright

Ask Latest Price
Product Detail
Brand Name :
JX
Model Number :
Reliable Quality Kovar Expansion Alloy Sheet Engrave
Certification :
ISO
Place of Origin :
china
MOQ :
100kgs
Price :
Negotiable
Contact Supplier
Reliable Quality Kovar Expansion Alloy Sheet Engrave Bright
Reliable Quality Kovar Expansion Alloy Sheet Engrave Bright
Reliable Quality Kovar Expansion Alloy Sheet Engrave Bright
Reliable Quality Kovar Expansion Alloy Sheet Engrave Bright

JINXING MATECH CO LTD

Site Member
6 Years
Since 2007
Business Type :
Manufacturer, Distributor/Wholesaler, Importer, Exporter, Seller, Other
Main Products :
Zirconium Bar, Tungsten Copper Alloy, Tungsten Heavy Alloy
Total Annual :
5,000,000-10,000,000
Employee Number :
10~25
Certification Level :
Site Member
Discover similar products
View More

Find Similar Products By Category:

Supplier Homepage Products Nickel Based Alloys
MachineU China Products Minerals & Metallurgy Non-ferrous Metal Nickel
Contact Supplier
Submit Requirement