NiFe Alloy 4J29(KOVAR)

Description:

  • NiFe Alloy 4j29/Kovar Its usage in the electronics industry for metal parts bonded to hard glass envelopes for such devices as power tubes, x-ray tubes, etc, and other applications requiring glass-to-metal seals.

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Description

NiFe Alloy 4J29/Kovar

NiFe Alloy 4J29/Kovar

 Material grades and equivalents

Trademark

Telcan

UNS

FRANCE

AISI/ASTM

W.Nr

JIS Japan

VAC

Japan

4J29

Nilok

Kovar

DilverP1

ASTM F15

W.Nr 1.981

JIS EMAS-1001

Vacon 12

KV-1

Chemical composition:

Alloy

C

P

S

Mn

Si

Ni

Cr

Co

Cu

Fe

N

No

AI

Max

4J29 

0.03

0.02

0.02

0.05

0.3

28.5-29.5

<0.2

16.8-

17.8

<0.2

REST

<0.2

Mechanical Properties in the Annealed Condition:

Yield Strength (0.1% Offset)

Tensile Strength

Elongation

psi

MPa

psi

MPa

(%)

49,000

340

75,000

520

42

 

Regular shape for all kinds of alloys

Form

Specification

Supply Form

Others

Sheet

Thickness:0.40-4.75mm,General Width:1000、1219、1500mm

Whole Coil or piece of it

Cold Annealed,Surface 2B、2E

Plate

Thickness:4.76-60mm,Width:1500、2000、2500mm,Length:3000、6000、8000、8500mm(Under 10mm plate can be coiled)

Whole Coil or piece of it

Single hot rolling,Solid solution annealed state,Surface 1D

Belt

Thickness:0.10-3.0mm,Width:50-500mm

Whole Coil or Specified size

Cold Annealed,Surface 2B、2E

Bar & Rod

Rolled barΦ5-45mm,Length≤1500mm

Polished Bar(circle、Square)

Solution annealing,descaling

Forged barΦ26-245mm,Length≤4000mm

Weld tube

Outer diameterΦ4.76-135mm,Wall Thickness0.25-4.00mm,Length:≤35000 mm

Base on your requirement

Seamless Tube

Outer diameterΦ3-114mm,Wall Thickness0.2-4.5mm

Base on your requirement

Wire

Outer diameterΦ0.1-13mm

Base on your requirement

Ni & Ni alloy, Ti & Ti alloy

Forged piece

discs,rings,squares,blocks,slabs

Base on your requirement

Steel, Alloy

Flangs

All kinds of Flangs

Base on your requirement

Steel, Alloy

Welding Material

Coil wire Φ0.025mm-1.6mm

Base on your requirement

Certificate of Origin:America, Sweden, Britain, Germany, Austria, Italy, France.

Straight WireΦ1.6mm-4.0mm

Welding rodΦ1.2mm-4.0mm

Tube

Elbow, three links, four links, different diameter size

Base on your requirement

Ni & Ni alloy, Ti & Ti alloy

Explosive bonded laminate

Raw Sheet Thickness≥2mm

Base on your requirement

Ni & Ni alloy, Ti & Ti alloy

 

 Characteristic as below:

4J29 is an iron-nickel-cobalt alloy with a coefficient of thermal expansion similar to that of hard (borosilicate) glass. This makes it especially suitable for uses which

require a matched-expansion seal between metal and glass parts.

Processing conditions and application:

Its usage in the electronics industry for metal parts bonded to hard glass envelopes for such devices as power tubes, x-ray tubes, etc, and other applications requiring glass-to-metal seals.