Precision Cold Rolled Kovar Strip 4J29 J185 UNS K94610
Kovar Strip an iron cobalt nickel alloy with a thermal expansion
coefficient similar to that of hard glass. As Kovar alloy is
tough and versatile, extensive quality control is applied in the
manufacturing process of UNS K94610 alloy to ensure uniform
physical and mechanical properties, making drawing, stamping and
processing easier. In addition, the coefficient of thermal
expansion (CTE) of Kovar is its most dynamic mechanical property.
Product Advantages of Kovar Strip
The expansion alloy Kovar is precisely formulated and controlled so
that its coefficient of thermal expansion is very close to that of
hard glass or ceramic, which means that it expands and contracts at
similar rates. As such, it is well suited for applications where it
is used in combination with glass or ceramic materials, especially
where an airtight seal must be maintained over a wide temperature
range. Other key strengths of Koval include:
- Very low coefficient of thermal expansion
- Metal stamping capacity
- Advanced dimensional stability
Chemical Composition of Kovar Strip
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 |
Kovar Strip Picture:
Application of Kovar Strip
It is used to make iron nickel cobalt alloy strip, bar, plate and
pipe with hard glass matching sealing. It is suitable for electric
vacuum devices such as transmitting tube, oscillation tube,
ignition tube, transistor, tube seal plug and relay shell. With a
certain linear expansion coefficient in the temperature range of
20℃-450℃, it can be matched with hard glass and firmly sealed