NiFe Alloy 42

Short Introduction:

  • NiFe Alloy 42  is used for glass-to-metal sealing of components that are enclosed in a glass envelope, such as lamps and electron tubes.

Category:

Description

NiFe Alloy 42

NiFe Alloy 42

Ni Fe Alloy42 material grades and equivalents：

Trademark GB AISI/ASTM UNS W.Nr BS AFNOR IMPHY VAC Telcan USA Magnetics Japan
Alloy 42 4J42 USA(ASTM)Glass sealing 42 / Uniseal 42 UNS K94100 WS 1.3917 Ni42 Germany:  Vacodil 42 / Nilo 42 Dumet42 / DIN 17745

AFNOR NF A54-301

 Vacodil 42 Nilo 42 Glass sealing 42 D

Chemical composition:

Grade

C%

P%

S%

Mn%

Si%

Al%

Co%

Ni%

Fe%

Alloy 42

Max 0.05

Max 0.020

Max 0.020

Max 0.80

Max 0.30

Max 0.10

Max 1.0

41.0-42.5

Bal.

 

Mechanical properties:

Grade

Tensile Strength N/mm²

Soft

Hard

Alloy 42

<590

>700

Characteristic as below：

A nickel-iron controlled-expansion alloy containing 41% nickel. It has a low and nominally constant coefficient of thermal expansion from room temperature to about 300°C.

Processing conditions and application:

Used for glass-to-metal sealing of components that are enclosed in a glass envelope, such as lamps and electron tubes.

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