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.
