JINXING MATECH CO LTD
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Kovar Plate is an iron-cobalt-nickel alloy with a coefficient of thermal expansion similar to that of hard glass. Because Kewa alloys are tough and versatile, extensive quality control is applied in the manufacturing of UNS K94610 alloys to ensure consistent physical and mechanical properties, making stretching, stamping and machining easier. In addition, Kovar, it is the most dynamic mechanical property.
Expansion alloy Kovar is precisely formulated and controlled to produce a coefficient of thermal expansion that is very close to that of hard glass or ceramic, meaning that it expands and contracts at a similar rate. It is therefore perfect in applications where it is used in conjunction with glass or ceramic materials, especially where a hermetic seal must be maintained across a wide temperature range. Other key Kovar benefits include:
| Chemical Compositions | |
| Element | Content |
| NICKEL (Ni) | 29 |
| COBALT (Co) | 17 |
| MANGANESE(Mn) | 0.5 |
| SILICON (SI) | 0.2 |
| SULFUR (S) | 0.025 |
| CHROMIUM(Cr) | 0.2 |
| COPPER (Cu) | 0.2 |
| MOLYBDENUM (Mo) | 0.2 |
| ZIRCONIUM (Zr) | 0.1 |
| PHOSPHORUS (P) | 0.025 |
| CARBON (C) | 0.06 |
| IRON | BALANCE |
It is suitable for transmitting tube, oscillating tube, ignition tube, transistor, tube sealing plug, relay shell and other electric vacuum devices. It has a certain linear expansion coefficient in the temperature range of 20 ℃ - 450 ℃, which can match with hard glass and seal firmly.
Purpose: To make iron nickel cobalt alloy bars, bars, plates and tubes with hard glass. Suitable for transmitting tube, oscillating tube, ignition tube, transistor, tube sealing plug, relay shell and other electric vacuum devices. It has a certain linear expansion coefficient in the temperature range of 20 ℃ - 450 ℃, which can match with hard glass and seal firmly.