现货Kovar可伐合金毛细管1.5*0.2现货--蒙镍销售部

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4.6~5.2

5.1~5.5

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4J29合金在较宽的温度范围(-80~450℃)内膨胀系数与硬玻璃的膨胀系数相近，在电真空工业中，用来与硬玻璃封接制造高气密性元器件，也可以和陶瓷封接。名称：铁镍钴玻封合金。在 20～450 ℃具有与 硅硼硬玻璃相近的热膨胀系数，居里点高，具有良好的低温组织稳定性。为铁镍钴玻封合金。

以上资料由上海蒙镍特种合金有限公司科研中心提供，如有转载，请麻烦告知

Kovar alloy capillary 1.5*0.2 spot

Analysis and Research on Kevar 4J29 Fe-Ni-Co alloy

Fe-ni-co alloy 4J29 (Kovar, Kovar, Kovar, ASTM F-15)

Uses: used for making iron nickel cobalt alloy strip, bar, plateand pipe matched with hard glass sealing.

Suitable for transmitting tube, oscillating tube, ignition tube,transistor, tube seal plug, relay shell and other electrical vacuumdevices.

In the temperature range of 20℃-450℃ has a certain linearexpansion coefficient, can match with hard glass firm sealing.

Close to the brand

GB/T

AISI/ASTM

JIS

W.Nr

4J29

F15

EMAS-1001

1.3912

Chemical composition of 4J29:

alloy

%

nickel

chromium

iron

cobalt

copper

carbon

manganese

silicon

phosphorus

sulfur

molybdenum

* small

28.5

allowance

16.8

* big

29.5

0.2

17.8

0.20

0.03

0.50

0.30

0.02

Average linear expansion coefficient (10-6℃:

20 ~ 100 ℃

20 ~ 300 ℃

20 ~ 400 ℃

20 ~ 450 ℃

20 ~ 500 ℃

20 ~ 530 ℃

20 ~ 600 ℃

-

4.6 ~ 5.2

5.1 ~ 5.5

The expansion coefficient of 4J29 alloy is similar to that ofhard glass in a wide temperature range (-80~450℃). In the electricvacuum industry, it can be used to seal with hard glass to makehigh air tightness components, and also can seal with ceramics.Name: Iron nickel cobalt glass seal alloy. At 20 ~ 450 ℃, it hassimilar thermal expansion coefficient with borosilicate hard glass,high Curie point, and good microstructure stability at lowtemperature. For iron nickel cobalt glass seal alloy.

The above information is provided by the scientific researchcenter of Shanghai Mengni Special Alloy Co., LTD. If reprinted,please kindly inform us