Good Quality Kovar Plate
Basic Info
Model No.: Kovar plate
Product Description
Model NO.: Kovar plate Material: Fe Ni Surface: Bright&Smooth Type: Kovar Plate Quality Test: Mill Test Report MOQ: Based on The Size Trademark: WISDOM Origin: Shanghai, China Product Type: Plate Carbon Content: Low Carbon Condition: Soft Bar, Forging,and Wire Package: Standard Package Payment Currency: USD/Eur/RMB Country of Origin: Shanghai Specification: A level of quality, e. g CE, RoHS, SGS, GMP, etc.
Kovar Alloy
General Description
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
Specifications
Physical Properties
Mechanical Properties
Coefficient of Expansion
Size Range
Kovar Wire: 0.1mm-9mm
Kovar Bar: 11mm-200mm
Kovar Strip: 75-110mm*0.15-22mm
Seamless and welded tubes also availabla per request
Contact us if you need more details on Kovar Plate. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Kovar Alloy Sheet、Nickel-Base Alloy Sheet. If these products fail to match your need, please contact us and we would like to provide relevant information.
Kovar Alloy
General Description
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 |
Size Range
Kovar Wire: 0.1mm-9mm
Kovar Bar: 11mm-200mm
Kovar Strip: 75-110mm*0.15-22mm
Seamless and welded tubes also availabla per request
Contact us if you need more details on Kovar Plate. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Kovar Alloy Sheet、Nickel-Base Alloy Sheet. If these products fail to match your need, please contact us and we would like to provide relevant information.
Product Categories : Super Alloy
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