- 5 leading manufacturers
- 27 additional suppliers
- 12 states and provinces
- 14 related categories
- 4 guide sections
Kovar Companies and Suppliers
IQS Directory is a top industrial directory listing of leading industrial kovar compaines and suppliers. Access our comprehensive index to review and source kovar suppliers with preview ads and detailed product descriptions. These kovar companies can design, engineer and supply kovars to your specifications and application need. A quick and easy to use request for quote form is provided for you to contact these kovar companies and suppliers. Each company has detailed profile information, locations, phone number, website links, product videos and product information defined. We are the right resource for your information requirement whether its for a supplier of kovar steel plates, kovar welding, kovar tubings.
Suppliers located in CA, NY, IL +9 more states
Contents (4 sections)
Leading Kovar Manufacturers
Showing all 5
| Placement No. | Manufacturer | Location | Contact | Actions | |
|---|---|---|---|---|---|
| 1 | Source 21Source 21 is one of the most trusted processors and distributors of high-nickel alloy coil and strip in the industry, supplying materials engineered for extreme service environments. Our catalog includes Inconel 625 and 718, Hastelloy C-276 and X, Monel 400 and K-500, Nickel 200/201, copper-nickel C706, nickel silver C752, phosphor bronze C510, and controlled expansion Alloys 42 and 50, available as coil, strip, slit coil, sheet, plate, and cut-to-length blanks. | Columbus, OH | |||
| 2 | Cada Stainless & AlloysWe are Cada Stainless & Alloys, a trusted supplier of high-performance nickel materials engineered for demanding industrial environments where strength, corrosion resistance, and consistency are non-negotiable. Our operations center on sourcing and processing premium nickel and nickel-based alloys that serve critical applications across chemical processing, aerospace, power generation, marine, and advanced manufacturing sectors. | Chester, NY | |||
| 3 | Service Steel Aerospace Corp.At Service Steel Aerospace, we specialize in providing premium-quality nickel products tailored to the needs of the aerospace industry. Our extensive range of nickel alloys and materials is designed to meet the rigorous demands of aerospace applications, offering superior strength, durability, and corrosion resistance. | Fife, WA | |||
| 4 | California Fine Wire CompanyCalifornia Fine Wire is an expert in aluminum wire, copper wire, nickel wire, alloy wire and more. Our qualified sales team can help you select almost any kind of wire, or choose from the various aluminum and other metal alloys we have. We also provide annealing, cutting and straightening of our metal wire. | Grover Beach, CA | |||
| 5 | Diversified Industrial ProductsDiversified Industrial Products is a leader in high-quality raw metal distribution and metal manufacturing. We serve a wide range of industries with specialty metals including high temperature and nickel alloys, aluminum, titanium, red metals, stainless steel, tungsten and more, available in sheet, wire, plate, bar, coil, and tube forms. Diversified Industrial has more than 25 years of experience. | Deer Park, NY |
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Leading kovar manufacturers are listed first on this page, each with a website preview and a Request a Quote button on its row.
Additional Kovar Companies
The category’s other kovar companies are listed on their own page, with location, phone and website where each supplier provides them.
View 27 Additional Kovar CompaniesDo not see your company listed in Kovar?
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Quick Answers
- How many kovar manufacturers are listed on IQS Directory?
- 5 leading manufacturers and 27 additional suppliers.
- Where are kovar manufacturers located?
- The listed suppliers are in 12 states: California (5), New York (5), Illinois (4), Ohio (4), Pennsylvania (4), Texas (3), New Jersey (2), Florida (1), and 4 more.
- How do I get quotes from kovar suppliers?
- Select suppliers in the table and choose Request Quotes. IQS reviews your request and forwards it to every supplier you select.
Kovar
Also known as Rodar, Kovar is a registered trademark that refers to a low expansion alloy that is composed of iron, nickel, cobalt, and trace amounts of the elements manganese, silicone, and carbon. Kovar was specifically formulated as a sealing alloy for glass and ceramic materials (specifically for compatibility with the thermal expansion characteristics of borosilicate glass).
Applications of Kovar
The material is used by many industries, including electronics, medical, semiconductor and industrial manufacturing, to provide exceptional hermetic seals for applications such as power tubes, vacuum tubes, transistors, microwave tubes, diodes, integrated circuits, and x-ray tubes.
Characteristics of Kovar
Most often used in applications requiring a glass to metal seal, Kovar is vacuum melted, meaning that it has undergone melting, refining, and casting under a vacuum. An additional property of Kovar is that, at any temperature under that of the Curie point (435°C or 815ºF), it is magnetic. Kovar is similar to another nickel alloy, referred to as Invar. Invar is a nickel steel alloy with specific thermal expansion properties; however, Invar is unique for its low thermal expansion qualities, while Kovar is unique for its low thermal expansion in terms of its compatibility to heat-resistant glass.
Material Properties of Kovar
Kovar is specifically composed of 54% iron, 29% nickel, 17% cobalt, .2% silicon, .3% manganese, and less than .01% carbon. This chemical composition has narrow limits that are controlled to ensure optimal thermal expansion compatibility.
Kovar Design and Customization
Kovar can be fabricated into shapes and parts such as sheets, rods, plates, bars, and tubing through a variety of heat treating processes, including annealing and forging. Although high temperatures are not critical when annealing Kovar, temperatures greater than 900ºC (1652ºF) are not recommended because the high heat will promote grain growth. When it comes to forging Kovar, the biggest concern is that the Kovar must be heated quickly to avoid soaking within the furnace, which can affect the surface appearance of the alloy.
In addition to manufacturing processes, there are many types of secondary services that are commonly used on Kovar including turning, drilling, tapping, and reaming. When it comes to turning Kovar, it is necessary to pay attention to the angle of the cutting tools. For drilling Kovar, it is the speed of the drill and the resulting feed that must be taken into consideration. It is the same for reaming but with different required proportions. Lastly, when it comes to tapping Kovar, the speed should be around 20 feet per minute (FPM), and it is recommended to use either nitrided or electrolyzed tools.