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Kovar (Ni29Co18) by ASTM F30 Expandable Alloy Seamless Pipe 2*0.6 2*0.3mm Hot Sale
| Price | $300.00 |
|---|---|
| Min Order | 5 kg |
| Availability | In Stock |
| Shipping From | Shanghai, China |
| Popularity | 540 people viewed |
Model NO.:
Kovar
Product Type:
Tube
Material:
Kovar
Carbon Content:
Low Carbon
Application:
Glass Sealing
Common Name:
Kovar
Surface Treatment:
Polish
State:
Annealing
ASTM:
F30
Uns:
K94610
Trademark:
OHMALLOY
Transport Package:
Woodencase
Specification:
ID: 0.1~10.5 OD: 1.5~95mm
Origin:
China
HS Code:
7507120000
Product Description
Kovar (Ni29Co18) by ASTM F30 Expandable Alloy Seamless Pipe 2*0.6 2*0.3mm hot sale
Kovar alloy is a vacuum melted, iron-nickel-cobalt alloy that is widely used in the electronics industry. Kovar is a nickel-iron-cobalt, controlled-expansion alloy which contains 29% nickel. Its coefficient of expansion, which decreases with rising temperature to the inflection point, matches the expansion rate of borosilicate glasses and alumina ceramics.
Kovar alloy has been used for making hermetic seals with the harder Pyrex glasses and ceramic materials. This alloy has found wide application in power tubes, microwave tubes, transistors, and diodes. In integrated circuits, it has been used for the flat pack and the dual-in-line package.
Chemical Composition
Grade | C% | P% | S% | Mn% | Si% | Cu% | Cr% | Mo% | Ni% | Co% | Fe% |
Kovar | Max 0.03 | Max 0.020 | Max 0.020 | Max 0.50 | Max 0.30 | Max 0.20 | Max 0.20 | Max 0.20 | 28.5-29.5 | 16.8-17.8 | Bal. |
Specifications
Grade | UNS | Werkstoff Nr. |
Kovar | K94610 | 1.3981 |
Physical Properties
Grade | Density | Melting Point |
Kovar | 8.17 g/cm3 | 1449°C |
Mechanical Properties
Grade | Tensile Strength N/mm² | ||||
Soft | 1/4 Hard | 1/2 Hard | 3/4 Hard | Full Hard | |
Kovar Strip | <570 | 520-630 | 590-700 | 600-770 | >700 |
Kovar Wire | <585 | 585-725 | 655-795 | 725-860 | >860 |
Coefficient of Expansion
Alloy | Linear Coefficient of Thermal Expansion a,10-6/°C | |||||||
20-200°C | 20-300°C | 20-400°C | 20-450°C | 20-500°C | 20-600°C | 20-700°C | 20-800°C | |
Kovar | 5.9 | 5.3 | 5.1 | 5.3 | 6.2 | 7.8 | 9.2 | 10.2 |
Photo of Tube
Production Process
Testing Equirement
Shipment
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