Kovar alloy

Place of Origin: Shanghai, China Brand Name: Husheng Model Number: Kovar alloy

Material: Kovar Product Type: Strip Size: Thickness 0. 1 mm ~3. 5 mm , width: d300 mm , Condi .

Packaging & Delivery

Packaging Detail : Wooden case or Knitting bags

Delivery Detail 30 days for 500 KG





Kovar alloy has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials.

Glass sealed and controllled expansion alloys

*kovar alloy, ASTM F15, Nilo- K, UNS K94610 (FeNi29Co17) , Chinese 4J29

*ASTM F15; DIN 17745; S. E. W. 385; Werkstoff Nr. 1. 3981; AFNOR NF A54- 301



Note:

A Nickel- Iron- Cobalt, controlled expansion alloy containing 29% Nickel. Its coefficient of expansion (which decreases with rising temperature to the inflection point) , matches the expansion rate of borosilicate glasses and aluminia ceramics. Applications include glass to metal seals in applications requiring high reliability or resistance to thermal shock, ie. high- power transmitting valves, transistor leads and heaters and photography flash bulbs.



Similar Grades: RussiaU. S. A. U. K. JapanFranceGermany

29KovarNilo KKV- 1Dilver P0Vacon 12

29- Rodar

Techallony Glasseal 29- 17TeleasealKV- 2

KV- 3Dilver P1Silvar 48

Grade & Chemical Composition (see Table 1)

Table 1 Grade & Chemical CompositionGradeChemical Composition (% )

CPSMnSiCuCrMoNiCoFe

?

4J290. 030. 0200. 0200. 50. 300. 200. 200. 2028. 529. 516. 817. 8Balance

4J440. 030. 0200. 0200. 50. 300. 200. 200. 2034. 235. 28. 509. 50Balance



Notes:

1. The content of AlMgZr and Ti should be no more than 0. 10% , the total content should be no more than 0. 20% . Otherwise, the suppliers PO and/ or contract shall indicate clearly.

2. Under condition that the average coefficient of the linear expansion meets the requirements of the standard, the content of nickel and cobalt are allowed to deviate from the stated range.

3. The shape and dimensions of the alloys are in compliance with GB/ T14985.