Quick Details
- Place of Origin: Jiangsu, China (Mainland)
- Brand Name: Jiangsu ToLand Alloy
- Model Number: Kovar 4J29
- Application: power tubes, x-ray tubes and other applications etc, in power tubes, microwave tubes, transistors and diodes
- Shape: wire,stripsheet,bar etc
- Material: Nickel Iron alloy
- Dimensions: various
- Chemical Composition: iron-nickel-cobalt alloy
- Grade: Kovar/4J29
- Specification: UNS K94610/ASTM F15
- standard: ASTM/AISI/GB/DIN etc
- chemical composition: Nickel Iron alloy
- certificate: ISO9001/ROHS/BV etc
- product type: wire, sheet, strip, pipe, tube, bar forging etc
- alloy or not: iron-nickel-cobalt alloy
- feature: hot corrosion resistance
- Property: 4J29 Kovar iron-nickel-cobalt alloy
| Packaging Details: | 4J29 Kovar iron-nickel-cobalt alloy: Standard seaworthy package(wooden boxes package,pvc package, and other package).or as buyers requirement |
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| Delivery Detail: | about 25-30 days upon receiving the deposit |
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Specifications
4J29 Kovar iron-nickel-cobalt alloy
1.4J29/UNS K94610/ASTM F15
2.manufacturer
3.ISO9001
4.short lead time 
4J29 Kovar iron-nickel-cobalt alloy
Kovar is an iron-nickel-cobalt alloy with a coefficient of thermal expansion similar
to that of hard (borosilicate) glass. This makes it especially suitable for uses which
require a matched-expansion seal between metal and glass parts.
Thus kovar finds wide usage in the electronics industry for metal parts bonded to hard
glass envelopes for such devices as power tubes, x-ray tubes, etc, and other
applications requiring glass-to-metal seals.
Specification:
| GB | | UNS |
KOVAR | 4J29 | ASTM F15 | K94610 |
Chemical Composition:
| % | Ni | Fe | Co | Mn | Si | S | Cr | Mo | P | S |
KOVAR | Min | | Bal | | | | | | | | |
4J29 | Max | 28.5~29.5 | 16.8~17.8 | 0.5 | 0.3 | 0.025 | 0.2 | 0.2 | 0.025 | 0.02 |
Mechanical Properties in the Annealed Condition:
Yield Strength (0.1% Offset) | Tensile Strength | Elongation |
psi | MPa | psi | MPa | (%) |
49,000 | 340 | 75,000 | 520 | 42 |
Jiangsu ToLand Alloy Co., Ltd. Was founded in May 1991. The factory covers an area of 200, 000 square meter. The registered capital of the company is RMB 125 million. As"A Key High-tech Enterprise of National Torch Plan"and"A high-tech enterprise in Jiangsu Province", the company specializes in research & development and production of super alloys, corrosion resistant alloys, precision alloys, and other special alloys and their products. It has state of the art special smelting and precision casting production lines as well as domestic leading forging & rolling, drawing and tube production lines and it has formed a product system which super alloy, special alloy pipe and revestment precision casting structure are three major products as the core.
Over the years, the company has always been adhering to the corporate spirit of "Loyalty, Innovation, Creditworthiness and Diligence" and the business philosophy of "Technological Innovation, Reliable Quality, Continuous Improvement and Customer Satisfaction". It enjoys a high recognition and reputation among customers and in the society.
The company will continue investing in world class research and development of new technologies and products, broadening of product chains, and exploration of domestic and international markets, in order to become a research & development and production base of high-performance alloys and derivative products as well as an enterprise with independent intellectual property rights and core competitiveness at home and abroad.
