Kovar 4J29 Nickel Alloy
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- K94610
- 1.3981
Nickel AlloyKovar 4J29
Specifications
GB/T
4J29
ASTM
F15
UNS
K94610
W. Nr
1.3981
The Kovar nickel alloy supplied by XINHUA has similar linear expansion coefficient with borosilicate (or Pyrex) over a range of temperatures (20℃~450℃), enabling it to be compatible with the thermal expansion characteristics of hard glass so as to achieve hermetic seals.
Oxidation film densification allows this iron-nickel-cobalt alloy to be readily welded and excellent plasticity makes it fabricable. Wide applications are power tubes, vacuum tubes, transmitting tubes, kinescopes, switch tubes, transistors, relay housing, etc.
Coefficient of Linear Expansion
| a/10-6·K-1 | 200-300℃ | 20-400℃ | 20-450℃ |
| / | 4.6-5.2 | 5.1-5.5 |
Stock and Supply of Various Kovar 4J29 Nickel Alloy
Common forms include tube, wire, bar, plate, etc.
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Nickel Alloy Pipe & Tubing -
Nickel Alloy Wire -
Nickel Alloy Bar -
Nickel Alloy Sheet & Plate
Chemical Compositions
| Ni 28.50%- 29.50% | Cr 0.20% Max. | Fe Bal. | Co 16.80%- 17.80% | Cu 0.20% Max. | C 0.03% |
| Mn 0.50% Max. | Si 0.30% Max. | P 0.02% Max. | S 0.02% Max. | Mo 0.20% Max. |
every aspect of materials testing, so our customers can achieve
consistent and accurate results, every time.
Providing High Nickel Alloys and High Performance Alloys
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