4j29 Kovar Nickel Based Alloy Strip Cold Rolled Full Annealed
Brand Name:JX
Certification:ISO
Model Number:4j29 Kovar alloy Strip Cold Rolled Kovar Strip Full Annealed
Minimum Order Quantity:100kgs
Delivery Time:35days
Payment Terms:L/C, T/T
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4j29 Kovar alloy Strip Cold Rolled Kovar Strip Full Annealed
(Common Name: Kovar, Nilo K, KV-1, Dilver Po, Vacon 12)
It is also known as Kovar alloy.Kovar Strip was invented to meet the need for a reliable glass-to-metal seal,
which is required in electronic devices such as light bulbs, vacuum
tubes, cathode ray tubes, and in vacuum systems in chemistry and
other scientific research. Most metals cannot seal to glass because
their coefficient of thermal expansion is not the same as glass, so
as the joint cools after fabrication the stresses due to the
differential expansion rates of the glass and metal cause the joint
to crack.
4J29 Kovar Strip was invented to meet the need for a reliable glass-to-metal seal, which is required in electronic devices such as light bulbs, vacuum tubes, cathode ray tubes, and in vacuum systems in chemistry and other scientific research. Most metals cannot seal to glass because their coefficient of thermal expansion is not the same as glass, so as the joint cools after fabrication the stresses due to the differential expansion rates of the glass and metal cause the joint to crack.
Kovar Strip Normal composition%
| Ni | 28.5~29.5 | Fe | Bal. | Co | 16.8~17.8 | Si | ≤0.3 |
| Mo | ≤0.2 | Cu | ≤0.2 | Cr | ≤0.2 | Mn | ≤0.5 |
| C | ≤0.03 | P | ≤0.02 | S | ≤0.02 |
Tensile Strength, MPa
| Code of condition | Condition | Wire | Strip |
| R | Soft | ≤585 | ≤570 |
| 1/4I | 1/4 Hard | 585~725 | 520~630 |
| 1/2I | 1/2 Hard | 655~795 | 590~700 |
| 3/4I | 3/4 Hard | 725~860 | 600~770 |
| I | Hard | ≥850 | ≥700 |
Kovar Strip Picture:
4j29 Kovar Nickel Based Alloy Strip Cold Rolled Full Annealed
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