Kovar Alloy Strip 4J29 ASTM F15 FeNi29Co17 Material for Glass-to-Metal Sealing Applications
Price:
3 - 499 kilograms $45.20
MOQ:
5 Kg
Delivery Time:
7-21 days
Brand:
Victory
Product Description
Glass Sealed Kovar Alloy Strip Overview
Kovar Alloy, also known as ASTM F-15, NILO K, Pernifer 2918, Rodar, and Dilvar P1, is a Nickel-Iron-Cobalt controlled expansion alloy containing 29% Nickel. Its coefficient of thermal expansion (which decreases with rising temperature to the inflection point) matches the expansion rate of borosilicate glasses and alumina ceramics.
Material Specifications & Standards
This Kovar strip conforms to multiple international standards including:
- ASTM F15
- DIN 17745
- S.E.W. 385
- Werkstoff Nr. 1.3981
- AFNOR NF A54-301
- UNS K94610 (FeNi29Co17)
- Chinese 4J29
Available Product Forms
| Alloy Type | Trade Name | UNS No. | Specifications | Rod | Strip | Wire | Sheet |
|---|---|---|---|---|---|---|---|
| Ni29Co17 | Kovar | K94610 | ASTM F15 | √ | √ | √ | √ |
Chemical Composition Analysis
| Element | 4J29 Content |
|---|---|
| C | ≤0.03% |
| Mn | ≤0.5% |
| Fe | Rest |
| P | ≤0.02% |
| S | ≤0.02% |
| Si | ≤0.3% |
| Ni | 28.5-29.5% |
| Co | 16.8-17.8% |
| Cr | ≤0.2% |
| Mo | ≤0.2% |
Industrial Applications
Kovar strip is widely used in industries requiring precise thermal expansion matching and dimensional stability:
- Electronics Industry: Vacuum tubes, cathode ray tubes (CRTs), microwave tubes, and electronic components requiring thermal stability
- Aerospace Industry: Aircraft and spacecraft components demanding high thermal and dimensional stability
- Optical Industry: Optical filters, mirrors, and lenses requiring excellent thermal properties
- Automotive Industry: Sensors, switches, and electronic components requiring dimensional stability
Key Performance Characteristics
- Controlled thermal expansion matching borosilicate glass
- Excellent thermal and mechanical properties
- High reliability for thermal shock resistance
- Superior dimensional stability across temperature ranges
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Company
Changzhou Victory Technology Co., Ltd
Location
NO.32 West Taihu Road, Xinbei District, Changzhou, Jiangsu
Contact Person
Victory