• We will be merging Anime.sh with another Forum in the near future, forming the largest anime network online! Stay tuned!
  • Hi Everyone! You can now post your suggestions for the WLA Community on our forums. However, please keep in mind that we have a suggestions guideline in place so that suggestions can be neatly organized and worked on easier. Please be sure to read the thread before posting. Thank you -WLA Staff

China precision alloy suppliers



Nov 19, 2018
Thread starter #1
General description:
Kovar, also called 4J29 is a nickel-iron-cobalt alloy containing approximately 29% nickel and 17% cobalt. Its thermal expansion characteristics match those of borosilicate glasses and alumina type ceramics. It is manufactured to a close chemistry range, yielding repeatable properties which make it eminently suitable for glass-to-metal seals in mass production applications, or where reliability is of paramount importance.
Basic parameter:
Melting point: 1450℃
Density: 8.36g/cm³
Chemical composition:
Ni C S P Mn Si
28.5-29.50.03 max0.02 max0.02 max0.5 max0.3 max
Cr Co Cu Mo Fe
0.2 max16.8-17.80.2 max0.2 maxBasic
Production process of alloy Kovar round bar:
1st melting → 2nd remelting → hot forging → hot rolling → peeling → polishing
Application of alloy Kovar round bar:
· 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.China precision alloy suppliers
Top Bottom